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Amnirana parva sp. nov. Lesser White-Lipped Frog Figs. 5–7 Holotype. ZMB 88458 (field #: RG27, GenBank #: 16S: OQ400914), adult male, Liberia, Krahn-Bassa Proposed Protected Area, 5°39′02.1′′N, 8°39′05.0′′W, 28 March 2018, leg. M.-O. Rödel & J. Glos. Paratypes. Twelve males, ten females: ZMB 71273 (field #: MOR ANK 15, GenBank #: 16S: MG552248), adult female, Ghana, Ankasa National Park, 5°16′38.5212′′N, 2°38′41.8812″W, 5 August 2005, leg. A.C. Agyei & A. Hillers; ZMB 71274 (field #: MOR OWS 28, GenBank #: 16S: MG552262), adult female, Ghana, Owabi Wildlife Sanctuary, 6°44′50.5212″N, 1°42′11.6388″W, July 2005, leg. A.C. Agyei & A. Hillers; ZMB 71276 (field #: MOR LE 11, GenBank #: 16S: MG552287), adult female, Ghana, Leklebi-Agbesia, 6°56′ 1.3812″N, 0°29′1.5612″W, 19 July 2005, leg. A.C. Agyei & A. Hillers; ZMB 79187 (field #: GO14), adult male, Liberia, Gola National Forest, 7°27′10.6812″N, 10°41′31.3188″W, 28 November 2005, leg. A. Hillers; ZMB 79197 (field #: G84), adult female, Ghana, Volta Region, 22 August 2001, leg. M.-O. R ̂del; ZMB 79210 (field #: GOL 060, GenBank #: 16S: MG552310), adult male, Sierra Leone, Gola North Forest Reserve, 7°35′10.14″N, 11°1′30.9612″W, 15 September 2005, leg. A. Barrie & A. Hillers; ZMB 79253 (field #: GRE 010, GenBank #: 16S: MG552307), adult female, Liberia, Grebo National Forest, 5°24′6.48″N, 7°44′0.6612″W, 7 December 2005, leg. A. Hillers; ZMB 87105–06 (field #: P.LI 12 004–P.LI 12 005, GenBank #: 16S: MG552296 & MG552305), adult female and male, Liberia, Gba Community Managed Forest, 7°28′52.6584″N, 8°34′28.5564″W, 28 January 2012, leg. J. Penner; ZMB 87107 (field #: P.LI 12 077, GenBank #: 16S: MG552312), adult male, Liberia, Gba Community Managed Forest, 7°30′34.5636″N, 8° 41′50.7408″W, 3 February 2012, leg. J. Penner; ZMB 87108 (field #: P.LI 12 321, GenBank #: 16S: MG552315), adult male, Liberia, Sapo National Park, 5°29′42.8352″N, 8°21′55.1988″W, 5 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87109 (field #: P.LI 12 466, GenBank #: 16S: MG552323), adult male, Liberia, Mount Ghi South, 5°38′34.9944″N, 8°12′30.1428″W, 29 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87110–11 & 87116 (field #: P.LI 12 503–P.LI 12 505, GenBank #: 16S: MG552319 & MG552320), adult male, female and male, Liberia, Mount Ghi South, 5°39′11.124″N, 8°12′21.708″W, 3 October 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87112 (field #: P.LI 12 300, GenBank #: 16S: MG552322), adult male, Liberia, Sapo National Park, 5°31′20.8272″N, 8°20′46.2084″W, 14 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87113 (field #: P.LI 12 377, GenBank #: 16S: MG552317), adult male, Liberia, Sapo National Park, 5°30′18.5652″N, 8°20′14.9208″W, 18 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87114 (field #: P.LI 12 432, GenBank #: 16S: MG552316), adult female, Liberia, Mount Swa, 6°26′18.0636″N, 9°3′25.9416″W, 24 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 87115 (field #: P.LI 12 279, GenBank #: 16S: MG552314), adult female, Liberia, Sapo National Park, 5°31′34.8564″N, 8°20′53.1636″W, 12 September 2012, leg. J. Penner & N.L. Gonwouo; ZMB 88438 (field #: RG07), adult female, Liberia, Krahn-Bassa Proposed Protected Area, 06°02′34.8″N, 08°20′10.3″W, 25 March 2018, leg. M.-O. R ̂del & J. Glos; ZMB 88512 (field #: RG80), adult male, Liberia, Foya Proposed Protected Area, 08°00′21.3″N, 10°25′20.2″W, 5April 2018, leg. M.-O. Rödel & J. Glos; ZMB 88549 (field #: RG118, GenBank #: 16S: OQ400915), adult male, Liberia, Foya Proposed Protected Area, 08°03′18.6″N, 10°23′04.0″W, 8 April 2018, leg. M.-O. R ̂del & J. Glos. Additional material. Ten males, ten females; ZMB 90052 (field #: N035), adult female, Guinea, Keoulenta, 7°41′20.6”N, 8°21′19.0”W, 21 September 2009, leg. J. Doumbia, L. Sandberger, K. Camara & F. Gbêmou; ZMB 90053 (field #: N064), adult female, Guinea, Foromota, 7°42′58.3”N, 8°21′41.6”W, 3 November 2009, leg. J. Doumbia, L. Sandberger, K. Camara & F. Gbêmou; ZMB 90054 (field #: S4- Dian 91), adult male, Guinea, Diandian Missidé, 10°59′10.356”N, 13°47′44.556”W, 3 October 2016, leg. J. Doumbia & K. Camara; ZMB 90055 (field #: Ban _0362), adult female, Guinea, Banco, 8°31′6.312”N, 8°56′15.864”W, 17 May 2019, leg. J. Doumbia & K. Camara; ZMB 90056 (field #: G009), adult female, Liberia, Gangra, 7°33′47.556”N, 8°38′15.144”W, 14 January 2009, leg. J. Doumbia, K. Camara & A. T. Johnson; ZMB 90057 (field #: Wata 2_0201), adult female, Guinea, Wataférédou, 8°39′15.192”N, 8°51′11.196”W, 8 May 2019, leg. J. Doumbia & K. Camara; ZMB 90059 (field #: G003), subadult female, Liberia, Gangra, 7°32′40.992”N, 8°37′35.58”W, 12 January 2009, leg. J. Doumbia, K. Camara & A. T. Johnson; ZMB 90060 (field #: G009), adult male, Liberia, Gangra, 7°33′47.556”N, 8°38′15.144”W, 14 January 2009, leg. J. Doumbia, K. Camara & A. T. Johnson; ZMB 90062 (field #: Obay _0548), adult male, Liberia, Obayanmai, 8°8′59.82”N, 9°52′49.764”W, 7 April 2019, leg. J. Doumbia, K. Camara, F. Gbêmou & F. B. Beyan; ZMB 90063 (field #: Obay _0611), adult male, Liberia, Obayanmai, 8°8′56.04”N, 9°52′26.436”W, 9 April 2019, leg. J. Doumbia, K. Camara, F. Gbêmou & F.B. Beyan; ZMB 90159 (field #: PG.L.15/040), adult female, near Bouaflé, Ivory Coast, 7°0′15.1488”N, 5°34′37.0344”W, 7 May 2015, leg. J. Penner & N.L. Gonwouo; ZMB 90161 (field #: PG.L.13 033), subadult female, Liberia, Dugbe, 5°5′15”N, 8°36′29.88”W, 26 August 2013, leg. J. Penner & N.L. Gonwouo; ZMB 90162 (field #: PG.L.13 109), adult male, Liberia, Dugbe, 5°8′40.92”N, 8°29′57.12”W, 3 September 2013, leg. J. Penner & N.L. Gonwouo; ZMB 90163 (field #: LI10 014), adult male, Liberia, Tokadeh, 7°26′40.704”N, 8°39′27.972”W, 11 November 2010, leg. J. Penner; ZMB 90164 (field #: PG.L.13 054), adult female, Liberia, Dugbe, 5°4′20.28”N, 8°33′23.76”W, 28 August 2013, leg. J. Penner & N.L. Gonwouo; ZMB 90165 (field #: LI10 121), adult male, Liberia Tokadeh, 7°27′52.164”N, 8°39′53.928”W, 27 November 2010, leg. J. Penner; ZMB 90166 (field #: LI10 114), adult male, Liberia, Eastern Nimba Nature Reserve, 7°29′3.264”N, 8°34′36.264”W, 26 November 2010, leg. J. Penner; ZMB 90167 (field #: LI10 136), adult male, Liberia, Geipa, 7°28′59.196”N, 8°32′13.344”W, 3 December 2010, leg. J. Penner; ZMB 90168 (field #: PG.L.13 188, adult male, Liberia, Dugbe, 5°5′45”N, 8°29′32.64”W, 13 September 2013, leg. J. Penner & N.L. Gonwouo; ZMB 90169 (field #: LI10 120, adult female, Liberia, Eastern Nimba Nature Reserve, 7°29′3.264”N, 8°34′36.264”W, 28 November 2010, leg. J. Penner. Diagnosis. Amnirana parva sp. nov. differs from other West African Amnirana genetically, morphologically, and acoustically. The uncorrected pairwise-divergence in 16S ribosomal RNA between the new species and its closest congener, A. fonensis, is 5.8%. The new species can be distinguished from A. fonensis by several morphological traits in male specimens. SVL of male A. parva sp. nov. (41.9–50.4 mm) is smaller than in A. fonensis (48.7–65.3 mm). Area of humeral gland is smaller in A. parva sp. nov. (3.7–14.8 mm 2) than in A. fonensis (13.5–26.4 mm 2) as well. Males of A. occidentalis and A. galamensis reach larger SVL (67 and up to 80 mm, respectively; females of these species reach 96 and 86 mm, respectively), have differing color pattern and completely smooth dorsal skin (R̂del & Bangoura 2004; Channing & R̂del 2019). Most males of A. parva sp. nov. have dark spots on the dorsum. Breeding males of A. fonensis differ by a yellow dorsal coloration. The ranges of two Central African Amnirana species that are morphologically similar to A. parva sp. nov., A. albolabris (comprising various lineages, see Jongsma 2018) and A. asperrima (Perret, 1977), do not overlap with the new species. Nominotypical A. albolabris from Central Africa show a larger body size in males (Perret 1977 reports 44–57 mm SVL for A. albolabris from Cameroon). Amnirana asperrima can also be distinguished by both its larger adult body size (SVL of males: 46.7–60.1 mm) and the texture of its dorsal skin, which is densely covered with tiny spines. Other Central African Amnirana species show distinct morphological traits and cannot be confused with Amnirana parva sp. nov.: A. amnicola (Perret, 1977) adults are larger (SVL of males and females: 53–72 mm) and have a more pointed snout; and A. lepus (Andersson, 1903) adults are much larger (SVL: 70–100 mm), have finely granular skin, fully webbed toes, and much longer hind limbs. Last, the new species also differs from populations previously referred to A. longipes (Perret, 1960) that are much larger (SVL 77–87 mm) and have a more robust body and longer hind limbs. Although we follow Jongsma (2018) in recognizing A. longipes as a junior synonym of A. albolabris, we include it here in anticipation that this may be recognized as a valid taxon if one or several lineages of Central African A. albolabris are recognized as distinct species. Description of the holotype. Figs. 5–6; measurements in mm. Adult male with long and slender body, slightly dorsoventrally flattened; snout–vent length 42.9; snout acuminate with rounded tip in dorsal view, narrowly rounded in lateral view; head length 15.8, approximately 27% of SVL; head width 13.6; eye–snout distance 6.7; nostrils directed laterally; nostril closer to the snout (1.7) than to eye (4.7); eye diameter 6.1, slightly larger than tympanum diameter (5.2); interorbital distance 4.3; approximately one third of eye projecting above dorsal margin of head in lateral view; canthus rostralis distinct and sharply protruding; loreal region concave; anterocranial part of upper arm with large protruding gland (3.6 long, 2.0 wide, surface: 7.2 mm 2); long and slender fingers, tips broader than subarticular tubercles, forming discs, reaching 130–200% of finger width, inner metacarapal tubercle large and elongated, outer metacarpal tubercle smaller and more rounded; manual webbing absent; finger formula IIVariation. Measurements (in mm) of all individuals are summarized in Table 5. Overall, the male paratypes were similar to the holotype in external appearance and coloration. Male SVL ranged from 41.9–50.4 (mean ± sd: 45.9 ± 2.9, N= 13). The humeral gland area spanned between 3.7–14.8 mm 2 (9.4 ± 2.7 mm 2, N= 13). Female SVL ranged from 53.6–75.6 (63.9 ± 7.8, N= 10) thus markedly exceeding male SVL (Fig. 7). Seven of 13 showed slightly more extended (1-1), and a single male paratype showed slightly less extended webbing (2-2) of the fourth toe. In female paratypes seven of 10 individuals exhibited a webbing formula with slightly more extended webbing on toe IV(1-1). The dorsal skin was covered with small tubercles in all individuals, but females had fewer, smaller, and less spiny tubercles. In some individuals, the skin appeared almost smooth at first sight, but tiny granules were always present upon detailed inspection. The dorsolateral ridge was interrupted in the majority of specimens: females (six of 10) and males (nine of 13). Females showed a brighter brown dorsum and few to no dark spots (see Figs. 6b, 7b, 8e, g, 11c). On the dorsum of males, the ground color varied from chocolate-brown to dark brown and all males had at least some dark spots. The ventral coloration varied greatly among males. Among the paratypes, some had a plain white throat (e.g., ZMB 88549, 87112), similar to the holotype, whereas others exhibited dusty brown speckling covering almost the entire throat (e.g., ZMB 87113). The belly of all males were white to cream, and some individuals had irregular brown spots (e.g., ZMB 87110) that were densest near the legs, throat, or flanks, but were absent at the center of the venter. Females showed some color variation on the venter. In ZMB 87114, the belly and throat were white, whereas ZMB 79253 and ZMB 79197 had a cream-colored belly and a dusty brown speckled throat. Concerning life coloration (Figs. 8, 11), the dorsum exhibited various shades of brown, sometimes with darker spots (especially in males, most females without darker spots). The flanks in males were greenish yellow (Fig. 8f, h) to chocolate brown dorsally (Fig. 8b), usually turning lighter ventrally (but see Fig. 8a). The flanks in females were olive green, turning paler ventrally (Figs. 8c, e, g, 11c), and becoming almost cream-colored towards the belly (then often with some greenish or brownish mottling). The tympanum was brown in both sexes. Males had a narrow green line surrounding the eyes. In both sexes the iris was golden, sometimes with a reddish tinge, with the lower half of the iris being darker. The limbs and dorsum were a similar shade of brown in both sexes. The limbs sometimes were somewhat lighter, but with darker patterning. The number of conspicuous dark transverse bars on the hind limbs varied among individuals (e.g. compare Figs. 8b & 8h). The venter was beige or cream. Both sexes had a light cream or white upper lip, and rarely the anterior part of the lip was brownish (Fig. 8h). Juveniles showed a more contrasting pattern compared to adults. It consisted of a greenish brown dorsum with black spots and an almost black loreal region and flank. The ventral part of the flank and the belly were white with black dots. The juveniles had more conspicuous dark cross bands on the hind limbs and blackish dots on the forelegs; a bright white upper lip, and a bright red iris (uppermost part golden) (Fig. 11f). Acoustics. The advertisement call of Amnirana parva sp. nov. consists of a whiny-voiced croaking sound with ascending frequency modulation from 932 to 1092 Hz (mean ± sd: 1030 ± 86, N= 3). The sound consists of up to five harmonics of which the second-lowest is the dominant one in the first half, the lowest one in the second half (Fig. 4a). The call duration ranges from 0.26– 0.78 s (0.52 ± 0.26, N= 3). Dominant frequency at the beginning of the call ranges from 948–1034 Hz (1004 ± 49, N= 3). All call characteristics are summarized in Table 4. A call description by Schiøtz (1964c) from central Sierra Leone seems to refer to our new species. In that paper, Schiøtz describes three different sections of the call (such a clear distinction of sections was not detected by us). Call duration and complexity, however, seem to increase with the motivation of the frogs (MOR pers. obs.). Schiøtz (1964c) also mentions that these calls were different from those he recorded in Cameroon for A. albolabris, though he did not provide further details. Distribution. Confirmed A. parva sp. nov. records so far are known from western Sierra Leone to southerncentral Ghana, all within the belt of the (former) rainforest zone, bordering the southern humid Guinean savanna (Fig. 9). So far, no confirmed genetic records exist for Ivory Coast. However, morphologically we could assign frogs from the Taï National Park, the Azagny National Park, the Banco National Park, the Haute Dodo, Cavally and Tanoé forest reserves, as well as the Ivorian parts of Mount Nimba to the new species. Other formerly published records of A. albolabris (see literature cited below) from this country from habitats that include primary lowland evergreen and humid but semi-deciduous forest cannot be unambiguously assigned to either A parva sp. nov. or A. fonensis (see below). Life history. It is difficult in many cases to assign previous field observations and literature records to A. parva sp. nov. or A. fonensis. We summarize observations based on confirmed records (morphology and genetics of vouchers, and/or acoustics) as well as records, which originate from primary humid-evergreen rainforest. The latter decision was based on the results of the environmental niche modelling (see below). All observed and collected individuals of A. parva sp. nov. were encountered in closed primary or slightly degraded lowland rainforest, on the banks of or near to small to medium-sized streams (Fig. 10). In Banco National Park, southeastern Ivory Coast, the species was recorded in the forest, forest patches dominated by bamboos, and in man-made ponds of a fish-farm in a forest clearing (Fig. 11a, b). Although we often heard small choruses, Published as part of Griesbaum, Frederic, Jongsma, Gregory F. M., Penner, Johannes, Kouamé, N'Goran Germain, Doumbia, Joseph, Gonwouo, Nono L., Hillers, Annika, Glos, Julian, Blackburn, David C. & Rödel, Mark-Oliver, 2023, The smallest of its kind: Description of a new cryptic Amnirana species (Amphibia, Anura, Ranidae) from West African rainforests, pp. 301-339 in Zootaxa 5254 (3) on pages 309-319, DOI: 10.11646/zootaxa.5254.3.1, http://zenodo.org/record/7727536, {"references":["R ˆ del, M. - O., Bangoura, M. A. & B ˆ hme, W. (2004) The amphibians of south-eastern Republic of Guinea (Amphibia: Gymnophiona, Anura). Herpetozoa, 17, 99 - 118.","Jongsma, G. F., Barej, M. F., Barratt, C. D., Burger, M., Conradie, W., Ernst, R., Greenbaum, E., Hirschfeld, M., Leache, A. D., Penner, J., Portik, D. M., Zassi-Boulou, A. - G., R ˆ del, M. - O. & Blackburn, D. C. (2018) Diversity and biogeography of frogs in the genus Amnirana (Anura: Ranidae) across sub-Saharan Africa. Molecular Phylogenetics and Evolution, 120, 274 - 285. https: // doi. org / 10.1016 / j. ympev. 2017.12.006","Perret, J. - L. (1977) Les Hylarana (Amphibiens, Ranides) du Cameroun. Revue suisse de Zoologie, 84, 841 - 868. https: // doi. org / 10.5962 / bhl. part. 91429","Schiotz, A. (1964 c) The voices of some West African amphibians. Videnskabelige Meddelelser fra dansk Naturhistorik Forening, 127, 35 - 83.","Lamotte, M., Lauwarier, G. & Perret, J. - L. (1957) Contribution a l'etude des batraciens de l'Ouest Africain V. - Le developpement larvaires de Rana (Hylarana) albolabris. Bulletin de l'Institut fondamental d'Afrique Noire, Ser. A, 19, 1312 - 1327.","Guibe, J. & Lamotte, M. (1958) La reserve naturelle integrale du Mont Nimba. XII. Batraciens (sauf Arthroleptis, Phrynobatrachus et Hyperolius). Memoires de l'Institut Francais d'Afrique Noire, 53, 241 - 273.","Channing, A., R ˆ del, M. - O. & Channing J. (2012) Tadpoles of Africa. The biology and identification of all known tadpoles in sub-Saharan Africa. Edition Chimaira, Frankfurt am Main, Germany, 402 pp.","McIntyre, P. (1999) Hylarana albolabris, predation. Herpetological Review, 30, 223."]}

Redescription of A. fonensis (Rödel & Bangoura, 2004) Figs. 12–14 Holotype. SMNS 11788, adult male, Guinea, Simandou Range, northwest flank of Pic de Fon, 8°36′N, 8°51′W; 6 November 2002, leg. M.A. Bangoura. Paratypes. SMNS 11790, adult male, Guinea, Simandou Range, village situated to the northwest of Pic de Fon, 3 November 2002, leg. M.A. Bangoura; ZFMK 64481–64482, adult males, Guinea, Park National du Haut Niger, November 1996 – February 1997, leg. G. Nikolaus. Referenced specimens. Six males, one female; ZMB 79185 (field #: TI 60, GenBank #: 16S: MG552336), adult female, Sierra Leone, Tingi Hills, 8°52′2.1″N, 10°47′32.1612″W, 4 June 2007, leg. J. Johnny & A. Hillers; ZMB 79203 & 84733 (field #: SI 032–033, GenBank #: 16S: MG552334 & MG552340), two adult males, Guinea, Korombadou, 9°16′49.62″N, 9°6′ 52.0812″W, 5 October 2008, leg. J. Doumbia & A. Hillers; ZMB 79208 (field #: TI 020, GenBank #: 16S: MG552335), adult male, Sierra Leone, Tingi Hills, 8°53′25.44″N, 10°47′24.7812″W, 1 June 2007, leg. J. Johnny & A. Hillers; ZMB 90058 (field #: N044, 09-609), adult male, Guinea, N’Zérékore, 7°35′33.3″N, 8°28′5.4″W, 24 October 2009, leg. J. Doumbia, L. Sandberger, K. Camara & F. Gbêmou; ZMB 90158 (field #: LI10 088), adult male, Liberia, Tokadeh, 7°26′40.704″N, 8°39′27.972″W; 22 November 2010, leg. J. Penner & N.L. Gonwouo; ZMB 90160 (field #: PG.L. 15/041), adult male, Ivory Coast, 7°0′15.1488″N, 5°34′37.0344″W, 7 May 2015, leg. J. Penner & N.L. Gonwouo. For diagnostic differences to A. parva sp. nov., please see the diagnosis of the new species above. Description (based on the type series and seven additional specimens; measurements in mm, see Table 5). Medium-sized, slender frog, SVL of males range from 48.7 to 65.3 (mean ± sd: 57.2 ± 5.2, N= 10); a female measured 68.0; head slightly longer than broad, approximately one third of SVL; snout acuminate with rounded tip in dorsal view, narrowly rounded in lateral view; tympanum diameter around 85% of eye diameter, in two type specimens (SMNS 11788 & 11790) tympanum slightly larger than eye; inter-orbital distance slightly smaller than eye diameter; nostril closer to snout than to eye; canthus rostralis distinct and rounded; loreal region concave; dorsolateral ridge broad and protruding, only two male individuals show slight discontinuities in the posterior third of the ridge; males with large humeral glands on anterocraniad part of upper arms; area of humeral gland spans between 13.5–26.4 mm 2 (20.5 ± 4.86, N= 10); fingers long and thin, without webbing; tips rounded, forming small discs; finger formula: II– d), dark spots on dorsum and bands on hind limbs visible but paler; limbs and yellowish brown; flanks yellow, lighter towards cream belly; lip and throat bright yellow; dorsolateral ridge yellow to reddish brown; tympanum of breeding males with yellow center bordered by pale brown ring; tympanum of females dark or reddish brown (Fig. 13e, f). Acoustics. The advertisement call of male A. fonensis consists of a whiny-voiced croaking sound with an ascending frequency modulation of 548–723 Hz (mean ± sd: 633 ± 87, N= 3). The sound comprises up to five harmonics of which the lowest is the dominant one (see Fig. 4b) and lasts 0.55– 0.92 s (0.7 ± 0.19, N = 3). All call characteristics are summarized in Table 4. Distribution. Amnirana fonensis was described from the Pic de Fon, Simandou Range, and from the Haut Niger National Park, both located in Guinea. Our new records add further localities, including the first records from eastern Sierra Leone, the Nimba Mountains in northern Liberia, and central Ivory Coast. However, we cannot at this point clarify which previous West African records of Amnirana albolabris refer to either A. fonensis or A. parva sp. nov. (but see below). Life history. The observed and collected individuals were found near forest streams. These forests were less humid than in confirmed A. parva sp. nov. records and comprise semi-deciduous and degraded forest fragments (Fig. 14d) surrounded by savanna. Amnirana fonensis males differ from breeding A. parva sp. nov. males, by a bright yellow breeding coloration. Similar yellow breeding color has been reported from many, unrelated frogs across the tropics. In West Africa such color change has been observed in Phrynobatrachus alleni Parker, 1936 (R̂del 2003; Kanga 2021), Sclerophrys maculata (Hallowell, 1854) (Hillers & R̂del 2007) and S. togoensis (Ahl, 1924) (R̂del & Bangoura 2004). Amnirana fonensis breeds in water bodies of different sizes but seems to prefer stagnant or slow-flowing water. In a savanna-like habitat (Foma), males called from inundated patches, well concealed between grasses and reeds. In degraded gallery forests at Wataférédou, males called while floating on the water surface (Fig. 14a), well concealed between roots of trees and shrubs, or between low vegetation at the water edge. One to two males initiated calling and many other males then joined the chorus. Amnirana fonensis called at night as well as during the day. For instance, between 20:35 GMT and 23:00 GMT, we encountered many calling males (N> 100); the peak of calling activity was between 20:40 GMT and 21:30 GMT. Likewise between 14:45 and 16:00 GMT, we observed numerous calling males (N> 70); the peak of calling activity was at 14:57 GMT. In Foma, females attached eggs to grasses emerging from flowing water. After a few hours these eggs became submerged. In Wataférédou, the eggs were deposited between roots of trees and shrubs in the forest streams. The dark brown and yellow eggs were deposited in large clumps (Fig. 14b, c). We counted 809, 1074, and 2017 eggs in three clutches. The egg diameter ranged from 0.9‒2.4 mm (mean ± sd: 2.1 ± 0.42 mm mm; N= 100). We observed aquatic heteropterans (family Nepidae) preying on the eggs. It is likely that the tadpoles described by Lamotte (1957) from the Simandou range, can actually be assigned to A. fonensis. At Wataférédou, where A. fonensis was breeding, the forest stream was regularly polluted by people washing laundry. The edges of this gallery forest were degraded by subsistence farming, and cattle, and cleared for charcoal production and fuelwood., Published as part of Griesbaum, Frederic, Jongsma, Gregory F. M., Penner, Johannes, Kouamé, N'Goran Germain, Doumbia, Joseph, Gonwouo, Nono L., Hillers, Annika, Glos, Julian, Blackburn, David C. & Rödel, Mark-Oliver, 2023, The smallest of its kind: Description of a new cryptic Amnirana species (Amphibia, Anura, Ranidae) from West African rainforests, pp. 301-339 in Zootaxa 5254 (3) on pages 319-322, DOI: 10.11646/zootaxa.5254.3.1, http://zenodo.org/record/7727536, {"references":["Rodel, M. - O. & Bangoura, M. A. (2004) A conservation assessment of amphibians in the Foret Classee du Pic de Fon, Simandou Range, southeastern Republic of Guinea, with the description of a new Amnirana species (Amphibia Anura Ranidae). Tropical Zoology, 17, 201 - 232. https: // doi. org / 10.1080 / 03946975.2004.10531206","R ˆ del, M. - O. (2003) The amphibians of Mont Sangbe National Park, Ivory Coast. Salamandra, 39, 91 - 110.","Kanga, K. P., Kouame, N. G., Zogbasse, P., Gongomin, B. A. - I., Agoh, K. L., Kouame, A. M., Konan, J. C. B. Y. N., Adepo-Gourene, A. B., Gourene, G. & R ˆ del, M. - O. (2021) Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains. Amphibian and Reptile Conservation, 15 (1) [General Section]: 71 - 107 (e 275).","R ˆ del, M. - O., Bangoura, M. A. & B ˆ hme, W. (2004) The amphibians of south-eastern Republic of Guinea (Amphibia: Gymnophiona, Anura). Herpetozoa, 17, 99 - 118.","Lamotte, M., Lauwarier, G. & Perret, J. - L. (1957) Contribution a l'etude des batraciens de l'Ouest Africain V. - Le developpement larvaires de Rana (Hylarana) albolabris. Bulletin de l'Institut fondamental d'Afrique Noire, Ser. A, 19, 1312 - 1327."]}

Afrixalus lacustris Greenbaum, Dehling, Kusamba & Portik sp. nov. Great Lakes Spiny Reed Frog urn:lsid:zoobank.org:act: 41D3C41A-4501-4BEC-BFB6-B9C6C1518DC3 Afrixalus laevis (nec Megalixalus laevis Ahl 1930)— Laurent 1950: 24; Laurent 1972: 59 (partim); Laurent 1982: 33 (partim); Schiøtz 1999: 56 (partim); Channing & Howell 2006: 137 (partim); Spawls et al. 2006: 183 (partim); Channing & Rödel 2019: 158 (partim). Holotype. UTEP 20805 (field no. ELI 605), adult male, from the vicinity of Kalundu (03.15552° S, 28.42108° E, 1482 m), South Kivu Province, DRC, collected on 21 December 2010 by Chifundera Kusamba and Félix I. Alonda (Figs. 8D–F, 12A–B). Paratopotype. UTEP 20806 (field no. ELI 606), adult male, collected with the holotype. Referred specimens. Specimens with an asterisk were not included in morphological analyses due to poor quality of preservation, lack of a voucher, or unavailability of specimen(s): UTEP 20807–08 (field nos. ELI 644, 649), vicinity of Kalundu (03.15552° S, 28.42108° E, 1482 m), South Kivu Province, DRC; UTEP 20809, 22422 (field nos. ELI 669–70), Baraka, near shore of Lake Tanganyika (04.10832° S, 29.09705° E, 777 m), South Kivu Province, DRC; UTEP 20810–11 (field nos. EBG 1316, 1319), vicinity of Irangi (01.8873° S, 28.4495° E, 820 m), South Kivu Province, DRC; UTEP 22423 (field no. MUSE 10192), Kahuzi-Biega National Park, Nanwa (02.362138° S, 28.192589° E, 1566 m), South Kivu Province, DRC; UTEP 22424 (field no. MUSE 10137), Itombwe Plateau, Mbandakila (03.47937° S, 28.413049° E, 1135 m), South Kivu Province, DRC; RMCA 77-020 -B-133–136* (four specimens), Itombwe Plateau, Tubutubu (2300 m), South Kivu Province, DRC; RMCA 77-020 -B-89–92 (field nos. MF 14–15 [two specimens]), Kitutu (ca. 03.28° S, 28.11° E, 700 m), South Kivu Province, DRC; RMCA 77-020 - B-0069–71 (1 specimen), Itula (ca. 03.27° S, 28.12° E, 650 m), South Kivu Province, DRC; RMCA 77-020 -B-0081–83, 77-20-B-0086, Kamituga (ca. 03.54° S, 27.69° E, 1050 m), South Kivu Province, DRC; RMCA 77-020 - B-0072–73 (1 specimen), Mwana (ca. 03.15° S, 28.47° E, 1650 m), South Kivu Province, DRC; UTEP 22417 (field no. CRSN 2773), Toyokana (02.02734° N, 030.06653° E, 1294 m), Ituri Province, DRC; (field no. EPLU 395 *, photo and tissue only), ca. 0.5 km E of Epulu, near Mt. Mbiya (01.39594° N, 28.58093° E, 755 m), Ituri Province, DRC; UTEP 22416 (field no. DFH 247), Bwindi Impenetrable National Park, Buhoma (00.99045° S, 29.61884° E, 1523 m), Western Region, Uganda; (field nos. DFH 1102–03 * photos and tissues only), Kibale Forest National Park, Ngogo Research Center (00.49795° N, 30.42262° E, 1363 m), Western Region, Uganda; CAS 202032–36, Bwindi Impenetrable National Park, Buhoma rd., 2 km S (by rd.) of Bizenga River (01.00975° S, 29.620694° E), Western Region, Uganda; CAS 202133, Bwindi Impenetrable National Park, small tributary to Ishasha River (00.905° S, 29.704972° E, 1280 m), Western Region, Uganda; CAS 202109, Bwindi Impenetrable National Park, Bizenga River at Buhoma rd. (00.99275° S, 29.615722° E), Western Region, Uganda; CAS 256035 *, Bwindi Impenetrable National Park, rd. north of Ruhija, Western Region, Uganda; CAS 256128–31 *, Mabira Forest Reserve, marshy area adjacent to unpolluted stream (0.4508° N, 32.9493° E, 1121 m), Mukono District, Central Region, Uganda. Diagnosis. The species is referred to the genus Afrixalus for exhibiting the following characteristics: fingers and toes webbed; tips of fingers and toes enlarged to discs; eye large; pupil vertically elliptical; tympanum indistinct; vomer ridges and teeth absent; dorsal surfaces finely shagreened with minute pointed tubercles; outer metatarsal tubercle distinct; gular gland in males. It is readily distinguished from most other members of the genus by its small size (SVL in males 18.9–22.2 mm, in females 20.8–25.7 mm), being smaller than A. dorsalis (males 25–28 mm, females 26–30 mm), A. fornasini (males 30–38 mm, females 35–40 mm), A. fulvovittatus (males 23–27 mm, females 25–28 mm), A. lacteus (males 22–27 mm, females 25–29 mm), A. leucostictus (males 27–32 mm, females 25–36 mm), A. manengubensis (males to 32 mm), A. nigeriensis (males 28–34 mm, females 32–35 mm), A. osorioi (males 27–31, females 32–35 mm), A. paradorsalis (males 28–34 mm, females 32–35 mm), A. septentrionalis (males 19–21 mm), A. vittiger (males 22–25 mm, females 25–28 mm), and A. wittei (males 27–30 mm, females 29–33 mm); and larger size than A. delicatus (males 15–19 mm, females 17–22 mm) and A. stuhlmanni (males 15–21 mm, females 17–25 mm). Its differs in dorsal coloration and pattern from all species with longitudinal stripes or bands on a yellowish-brown background (A. brachycnemis, A. crotalus, A. delicatus, A. dorsalis, A. enseticola, A. fornasini, A. fulvovittatus, A. knysnae, A. morerei, A. orophilus, A. quadrivittatus, A. schneideri, A. spinifrons, A. stuhlmanni, A. upembae, A. septentrionalis, A. vittiger, and A. wittei); species showing a conspicuous large dark dorsal blotch on a uniform background on anterior dorsum in combination with large blotches on both sides of the hip (A. leucostictus, A. manengubensis, A. osorioi, A. paradorsalis, and A. schneideri) or with longitudinal lateral dark bands (A. equatorialis and A. nigeriensis); species with a uniformly colored dorsum without conspicuous pattern except a dark dorsolateral stripe (A. aureus, A. clarkei, A. delicatus, A. fornasini, A. lacteus, A. leucostictus [dorsum with small white tubercles], A. uluguruensis, and A. weidholzi [might have a black vertebral line and dark brown flanks]); and from all remaining species having either dark stripes running from tip of snout to back, crossing each other and continuing as dorsolateral stripes (A. vibekensis, also males without asperities); anterior part of dorsum yellowish with brown pattern, posterior part of dorsum translucent (A. laevis, also males without asperities); posterior part of dorsum and dorsal sides of limbs semi-translucent with dense small dark white-edged speckles (A. dorsimaculatus); and dark blotches and transverse marks with white speckles (A. sylvaticus). It is most similar to A. phantasma sp. nov. but differs from this species in being smaller (Table 1) and showing an overall darker coloration and more contrasting dorsal pattern that is obvious even in preserved specimens (Figs. 7–8, 12). It is readily distinguished from A. phantasma sp. nov. by the more extensive hand and toe webbing (Fig. 8E–F). Description of holotype. Measurements of the holotype are provided in Table 2. Body very slender, widest at temporal region, slightly tapering to groin (Fig. 8D–F); head small (HL/SVL 0.31, HW/SVL 0.31), about as long as wide (HW/HL 0.99); snout relatively long, rounded in dorsal view and in lateral profile, slightly wider than long; canthus rostralis hardly discernible, slightly concave between eye and nostril in dorsal view; loreal region oblique; nostrils rounded, directed anterolaterally and slightly dorsally; situated much closer to tip of snout and to eye, separated from each other by distance about equal to distance between eye and nostril (IN/EN 1.02); eye directed anterolaterally, strongly protruding, very large (ED/HL 0.39), its diameter shorter than snout (ED/SL 0.90); interorbital distance much wider than upper eyelid (IO/EW 1.61) and wider than internarial distance (IO/IN 1.31); tympanum covered by skin, not visible externally; upper jaw with dentition; teeth on premaxilla larger than teeth on maxilla; choanae small, located far anterolaterally at margins of roof of mouth, its anterior edge covered by maxillary bone, therefore appearing semicircular in ventral view; vomer ridges and teeth absent; tongue heartshaped, longer than broad, bilobed for about one-fourth of its length, free distally for about two-thirds its length; densely covered with minute papillae; median lingual process absent. Dorsal surfaces of head, trunk, and limbs and lateral surfaces of trunk finely shagreened; tiny pointed, widely scattered tubercles on dorsum, more numerous posteriorly than anteriorly; supratympanic fold absent; few tubercles at rear end of mandible without pointed tips; ventral side of head smooth; vocal sac present; gular gland of vocal sac smooth, large and wide, covering about 70 percent of throat width (Fig. 8E); chest smooth, abdomen weakly areolate; ventral side of limbs smooth; short transverse fold above vent. Forelimbs slender; hand large (HaL/SVL 0.28); tips of fingers enlarged into large disks, each with circummarginal groove; relative length of fingers: I I 2-/2 II 2-/3- III 2.25/2 IV; thenar tubercle oval, small and very low, about one-fourth length of metacarpal of Finger I; inner palmar tubercle and outer palmar tubercle very low, small, rounded, almost indiscernible. Hind limbs slender, moderately long; heel reaching to level of eye when legs adpressed forwardly to body; crus moderately long (TibL/SVL 0.44), slightly shorter than thigh; heels not touching each other when knees flexed and thighs held perpendicularly to median plane; foot subequal in length to crus (FoL/TibL 0.94); relative length of toes: I I 1.5/2+ II 1+/2+ III 1+/2+ IV 2/1+ V (Fig. 8E); inner metatarsal tubercle moderately prominent, elongated, about half length of metatarsus of Toe I; outer metatarsal tubercle small, rounded. Coloration in life. During night, skin on dorsal side of head, trunk, forelimbs, crus and tarsus light brown with more or less regular, locally more densely clustered dark brown speckling; distinct dark brown transverse stripe between upper eyelids, another less distinct one in scapula region, and another narrow one at level of anterior end of pelvis; dorsal skin of thigh largely unpigmented with only a broad stripe of widely scattered brown pigmentation; distinct dark brown band along canthus, continuing behind eye on both sides of trunk to level of pelvis; tubercles below eye and in tympanic region at rear end of jaw white; dark brown stripe running diagonally on middle of tibia, forming interrupted, inverted U-shaped band together with pelvic spots when legs folded against body; skin of ventral side of head, trunk and limbs largely unpigmented and translucent; gular gland bright yellow; fingers and toes yellow (Fig. 12). During day, basic dorsal coloration light brown; dark brown dorsal speckles, spots and stripes in more pronounced contrast to basic coloration, more distinctly visible. Coloration in preservative. Dorsal basic coloration largely faded to light brown; darker dorsal pattern elements dark brown, clearly visible; color of gular gland, fingers and toes faded to white (Fig. 8D–F). Variation. The paratypes match the holotype in general appearance and proportions. Coloration and color pattern varies from light-cream to yellowish-orange with a few relatively large and darker blotches and vermiculation, light speckling and indistinct dorsolateral stripe to an almost reticulated pattern of contrasting bright and dark elements with a broad and conspicuous brown dorsolateral band (Fig. 12). Pedal webbing variation is I 1.5[100]/2+[100] II 1+[100]/2+[100] III 1 +[50],1.25[50]/2+[100] IV 2 [100]/1+[100] V. Bioacoustics. The advertisement call and other vocalizations are unknown. Ecology and natural history. We collected males and females in swamps in forest openings and near forest edges (Fig. 11B), from vegetation at the edge of streams (or on vegetation overhanging them) in forest, and from non-forest vegetation near the shore of Lake Tanganyika. Egg deposition has not been observed and tadpoles are unknown. An adult male (CAS 256035) was found in Bwindi Impenetrable National Park (Uganda) ca. 2 m above ground in a tree fern “either calling or moving to a calling site (similar to ‘running’ of Kassina)” (D. Blackburn, in litt., 22 July 2021). Laurent (1955) noted the species from transitional forest. In his paper on amphibians of Virunga National Park, Laurent (1972) noted the species is most commonly found in swamps with herbaceous vegetation in secondary forest, and more rarely, in primary forest. Laurent (1982) noted that, in general, the species is common in the foliage of shrubs in dense forests. He also recorded it from “une mare sombre” (i.e., a dark pond) in syntopy with Chiromantis at Kitutu (DRC), marshes where it reproduces by sticking its eggs under the leaves of fountain grass (Pennisetum, Shabunda, DRC), a shaded bank of a pond in syntopy with Hyperolius “ tuberculatus ” (likely H. hutsebauti sensu Bell et al. 2017) and H. frontalis; the center of this pond had reeds harboring H. kivuensis and Afrixalus orophilus (Shabunda, DRC). Laurent (1983:352) listed the species (along with Phrynobatrachus petropedetoides and Hyperolius frontalis) from “shadowy puddles of the thick transition forest.” Etymology. The species epithet is the Latin adjective “ lacustris,” meaning belonging to or dwelling in lakes; in allusion to the distribution of the new species in the region of the African Great Lakes. Distribution and conservation. The species is distributed from lowland rainforest of the Congo Basin at 460 m (Omaniundu, DRC, Laurent 1982) to transitional forests of the Albertine Rift at 1650 m (Mwana, DRC) and east as far as Mabira Forest, Uganda (1121 m). As shown in Figure 5, the species has a relatively large distribution, including several national parks and protected areas (e.g., Virunga National Park, Bwindi Impenetrable National Park), and thus is not likely to be threatened based on a limited distribution. Using GeoCAT, its extent of occurrence is estimated as 409,238 km ² and its area of occupancy as 160 km ² (Bachman et al. 2011). We therefore classify this species as Least Concern according to the IUCN Red List criteria (IUCN 2021). Four specimens (RMCA 77-020-B-133–136) from Tubutubu, Itombwe Plateau (2300 m) are problematic because they are morphologically consistent with A. lacustris, but they were collected from a substantially higher elevation than all other known specimens. Coordinates for Tubutubu provided by RMCA (4° S, 28.933° E) suggest the locality is east of the highest point of the plateau at an elevation of about 1400 m on Google Earth. Although it is possible that the specimens were collected at the latter elevation, Laurent (1982) mentions bamboo forest as the habitat, which usually occurs at the highest elevations of the Itombwe Plateau (Doumenge 1998). No clarity is offered by Laurent (1964), because he does not mention any Afrixalus in his study of the ecology and distribution of amphibians of the Itombwe Plateau. Given this conflicting information, we do not include the Tubutubu specimens in our current understanding of the elevational distribution of A. lacustris (see gray triangle in Fig. 5)., Published as part of Greenbaum, Eli, Portik, Daniel M., Allen, Kaitlin E., Vaughan, Eugene R., Badjedjea, Gabriel, Barej, Michael F., Behangana, Mathias, Conkey, Nancy, Dumbo, Bonny, Gonwouo, Legrand N., Hirschfeld, Mareike, Hughes, Daniel F., Igunzi, Félix, Kusamba, Chifundera, Lukwago, Wilber, Masudi, Franck M., Penner, Johannes, Reyes, Jesús M., Rödel, Mark-Oliver, Roelke, Corey E., Romero, Soraya & Dehling, J. Maximilian, 2022, Systematics of the Central African Spiny Reed Frog Afrixalus laevis (Anura Hyperoliidae), with the description of two new species from the Albertine Rift, pp. 201-232 in Zootaxa 5174 (3) on pages 218-223, DOI: 10.11646/zootaxa.5174.3.1, http://zenodo.org/record/6986207, {"references":["Ahl, E. (1930) Ueber die afrikanischen Arten der Baumfroschgattung Megalixalus. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin, 1930, 89 - 102.","Laurent, R. (1950) Genres Afrixalus et Hyperolius (Amphibia Salientia). Exploration du Parc National Albert, Mission G. F. De Witte (1933 - 1935), 64, 5 - 120, 7 pls.","Laurent, R. F. (1972) Amphibiens. Exploration du Parc National des Virunga, Deuxieme Serie, 22, 1 - 125, 11 pls.","Laurent, R. F. (1982) Le genre Afrixalus Laurent (Hyperoliidae) en Afrique Centrale. Annales du Musee Royal de l'Afrique Centrale, Serie in Octavo, Science Zoologique, 235, 1 - 93.","Schiotz, A. (1999) Treefrogs of Africa. Edition Chimaira, Frankfurt am Main, 350 pp.","Channing, A. & Howell, K. M. (2006) Amphibians of East Africa. Cornell University Press, Ithaca, New York, New York, xi + 418 pp.","Spawls, S., Howell, K. M. & Drewes, R. C. (2006) Pocket Guide to the Reptiles and Amphibians of East Africa. A & C Black Publishers, London, 240 pp.","Channing, A. & Rodel, M. - O. (2019) Field Guide to the Frogs & Other Amphibians of Africa. Struik Nature, Cape Town, 408 pp.","Laurent, R. F. (1955) Apercu de la biogeographie des batraciens et des reptiles de la region des grand lacs. Bulletin de la Societe Zoologique de France, 79, 290 - 310.","Bell, R. C., Parra, J. L., Badjedjea, G., Barej, M. F., Blackburn, D. C., Burger, M., Channing, A., Dehling, J. M., Greenbaum, E., Gvozdik, V., Kielgast, J., Kusamba, C., Lotters, S., McLaughlin, P. J., Nagy, Z. T., Rodel, M. - O., Portik, D. M., Stuart, B. L., VanDerWal, J. & Zamudio, K. R. (2017) Idiosyncratic responses to climate-driven forest fragmentation and marine incursions in reed frogs from Central Africa and the Gulf of Guinea Islands. Molecular Ecology, 26 (19), 5223 - 5244. https: // doi. org / 10.1111 / mec. 14260","Laurent, R. F. (1983) About the herpetofauna of Central African montane forest. In: Rhodin, A. G. J. & Miyata, K. (Eds.), Advances in Herpetology and Evolutionary Biology: Essays in Honor of Ernest E. Williams. Museum of Comparative Zoology, Cambridge, Massachusetts, pp. 350 - 358.","Bachman, S., Moat, J., Hill, A., de la Torre, J. & Scott, B. (2011) Supporting Red List threat assessments with GeoCAT: Geospatial Conservation Assessment Tool. ZooKeys, 150, 117 - 126. https: // doi. org / 10.3897 / zookeys. 150.2109","IUCN (2021) IUCN Red List Categories and Criteria: Version 2021 - 3. Available from: https: // www. iucnredlist. org / (accessed 25 May 2022)","Doumenge, C. (1998) Forest diversity, distribution, and dynamique in the Itombwe Mountains, South-Kivu, Congo Democratic Republic. Mountain Research and Development, 18 (3), 249 - 264. https: // doi. org / 10.2307 / 3674036","Laurent, R. F. (1964) Adaptive modifications in frogs of an isolated highland fauna in Central Africa. Evolution, 18 (3), 458 - 467. https: // doi. org / 10.1111 / j. 1558 - 5646.1964. tb 01622. x"]}

Afrixalus phantasma Dehling, Greenbaum, Kusamba & Portik sp. nov. Ghost Spiny Reed Frog urn:lsid:zoobank.org:act: 1B2DBF26-5B0A-4DA8-B65E-0BC01704C1B4 Afrixalus laevis (nec Megalixalus laevis Ahl 1930)— Laurent 1972: 59 (partim); Laurent 1982: 33 (partim); Schiøtz 1999: 56 (partim); Channing & Howell 2006: 137 (partim); Spawls et al. 2006: 183 (partim); Channing & Rödel 2019: 158 (partim). Holotype. ZFMK 103454 (field no. JMD 723), adult male, from Gishwati Forest (01.823745° S, 29.360373° E, 2084 m), now part of Gishwati-Mukura National Park, Western Province, Rwanda, collected on 5 April 2011 by J. Maximilian Dehling and Bonny Dumbo (Figs. 7A, 8A–C). Paratypes. ZFMK 103455 (field no. JMD 722), adult female, collected with the holotype; ZFMK 103456 (field no. JMD 2015-30), adult male, ZFMK 103457 (field no. JMD 2015-31), adult female, from the type locality in Gishwati Forest, both collected on 27 September 2015 by J. Maximilian Dehling and Bonny Dumbo; ZFMK 103458–60 (field nos. JMD 677–679), three adult males, collected on 19 March 2011 by J. Maximilian Dehling, ZFMK 103461–62 (field nos. JMD 954–955), two adult males, collected on 16 February 2013 by J. Maximilian Dehling, all from Kamiranzovu Swamp (02.477165° S, 29.158243° E, 1962 m), Nyungwe National Park, Western Province, Rwanda; UTEP 20791–20792 (field nos. EBG 2838, 2843), two adult males, collected on 21 December 2009 by Chifundera Kusamba, Wandege M. Muninga, Mwenebatu M. Aristote, and Maurice Luhumyo from Nyakasanza Swamp near Tshibati (02.22886° S, 28.78017° E, 1979 m), South Kivu Province, DRC. Referred specimens. UTEP 20802 (field no. EBG 1198), forest ca. 4 km NW of Lwiro (02.2226° S, 28.7754° E, 2077 m), South Kivu Province, DRC; UTEP 20803, 22418–20 (field nos. EBG 1232, 1238–40), Kahuzi-Biega National Park, Mugaba (02.2750° S, 28.6631° E, 2298 m), South Kivu Province, DRC; UTEP 20804 (field no. EBG 1283), Kahuzi-Biega National Park, Chinya (02.2671° S, 28.6455° E, 2267 m), South Kivu Province, DRC; UTEP 20793–94 (field nos. EBG 2844–45), Nyakasanza Swamp near Tshibati (02.22886° S, 28.78017° E, 1979 m), South Kivu Province, DRC; UTEP 20795–20800, 22421 (field nos. ELI 414–20), Nyakasanza Swamp near Tshibati (02.22829° S, 28.77972° E, 1979 m), South Kivu Province, DRC; UTEP 20801 (field no. ELI 425), Chanjoka (02.21261° S, 28.77644° E, 2115 m), South Kivu Province, DRC. Diagnosis. The species is referred to the genus Afrixalus by exhibiting the following characteristics: fingers and toes webbed; tips of fingers and toes enlarged to discs; eye large; pupil vertically elliptical; tympanum indistinct; vomer ridges and teeth absent; dorsal surfaces finely shagreened with minute pointed tubercles; outer metatarsal tubercle distinct; gular gland in males. It is readily distinguished from most other members of the genus by its small size (SVL in males 20.1–24.6 mm, in females 22.6–26.4 mm), being smaller than A. dorsalis (males 25–28 mm, females 26–30 mm), A. fornasini (males 30–38 mm, females 35–40 mm), A. lacteus (males 22–27 mm, females 25– 29 mm), A. leucostictus (males 27–32 mm, females 25–36 mm), A. manengubensis (males to 32 mm), A. nigeriensis (males 28–34 mm, females 32–35 mm), A. osorioi (males 27–31 mm, females 32–35 mm), A. paradorsalis (males 28–34 mm, females 32–35 mm), A. septentrionalis (males 19–21 mm), and A. wittei (males 27–30 mm, females 29–33 mm); and larger than A. brachycnemis (males 18–21 mm, females 20–22 mm), A. delicatus (males 15–19 mm, females 17–22 mm), A. spinifrons (males to 20 mm, females to 25 mm), and A. stuhlmanni (males 15–21 mm, females 17–25 mm). Its differs in dorsal coloration and pattern from all species with longitudinal stripes or bands on a yellowish-brown background (A. brachycnemis, A. crotalus, A. delicatus, A. dorsalis, A. enseticola, A. fornasini, A. fulvovittatus, A. knysnae, A. morerei, A. orophilus, A. quadrivittatus, A. schneideri, A. spinifrons, A. stuhlmanni, A. upembae, A. septentrionalis, A. vittiger, and A. wittei); species with a conspicuous large dark dorsal blotch on a uniform background on anterior dorsum in combination with large blotches on both sides of the hip (A. leucostictus, A. manengubensis, A. osorioi, A. paradorsalis, and A. schneideri) or with longitudinal lateral dark bands (A. equatorialis and A. nigeriensis); species with a uniformly colored dorsum without conspicuous pattern except a dark dorsolateral stripe (A. aureus, A. clarkei, A. delicatus, A. fornasini, A. lacteus, A. leucostictus [dorsum with small white tubercles], A. uluguruensis, and A. weidholzi [might have a black vertebral line and dark brown flanks]); and from all remaining species having either dark stripes running from tip of snout to back, crossing each other and continuing as dorsolateral stripes (A. vibekensis, also males without asperities); anterior part of dorsum yellowish with brown pattern, posterior part of dorsum translucent (A. laevis, also males without asperities); posterior part of dorsum and dorsal sides of limbs semi-translucent with dense small dark white-edged speckles (A. dorsimaculatus); and dark blotches and transverse marks with white speckles (A. sylvaticus). The advertisement calls of the following species of Afrixalus consist of a long series of clicks, often initiated by a long buzzing note, and thus differ from the call of A. phantasma: A. aureus, A. brachycnemis, A. clarkei, A. crotalus, A. delicatus, A. dorsalis, A. fornasini, A. fulvovittatus, A. knysnae, A. nigeriensis, A. morerei, A. osorioi, A. quadrivittatus, A. septentrionalis, A. spinifrons, A. vibekensis, A. vittiger, A. weidholzi, and A. wittei. The advertisement calls of the remaining species for which information is available differ from the call of A. phantasma in the following characteristics (in parentheses): A. dorsimaculatus (soft, short buzzing rattle, usually repeated three times), A. equatorialis (series of five notes, repeated at 15–20/s and initiated by a long buzz, energy maximum at 2000–2500 Hz), A. lacteus (8–9 notes, 14–15 pulses,>300 pulses/s), A. paradorsalis (2–3 notes, energy maximum at 2700 Hz), A. stuhlmanni (2–9 notes, energy maximum at 4200–5100 Hz), and A. sylvaticus (2–5 notes, energy maximum at 4000–4500 Hz). The new species is most similar to A. lacustris sp. nov. from which it differs by a number of characteristics (see below). Description of holotype. Measurements of the holotype are provided in Table 2. Body very slender, widest at temporal region, slightly tapering to groin (Fig. 8A–C); head small (HL/SVL 0.31, HW/SVL 0.30), about as long as wide (HW/HL 0.98); snout relatively long, rounded in dorsal view and in lateral profile, slightly longer than wide; canthus rostralis hardly distinct, straight between eye and nostril; loreal region oblique; nostrils rounded, directed anterodorsally and slightly laterally; situated much closer to tip of snout and to eye, separated from each other by distance larger than distance between eye and nostril (IN/EN 1.15); eye directed anterolaterally, strongly protruding, very large (ED/HL 0.41), its diameter shorter than snout (ED/SL 0.84); interorbital distance much wider than upper eyelid and wider than internarial distance (IO/IN 1.21); tympanum covered by skin, not visible externally; upper jaw with dentition; teeth on premaxilla larger than teeth on maxilla; choanae small, located far anterolaterally at margins of roof of mouth, its anterior edge covered by maxillary bone, therefore appearing semicircular in ventral view; vomer ridges and teeth absent; tongue short and moderately broad, bilobed for about one-sixth of its length, free distally for about half its length; densely covered with minute papillae; median lingual process absent. Dorsal surfaces of head, trunk, and limbs and lateral surfaces of trunk finely shagreened; minute pointed, widely scattered tubercles on dorsum, more numerous posteriorly than anteriorly; supratympanic fold absent; small, subcircular, elevated glandular area in tympanic region posterior to eye and rear end of mandible, bearing large tubercles with pointed keratinous tips; ventral side of head smooth; vocal sac present; gular gland of vocal sac smooth, large and wide, covering about 70 percent of throat width (Fig. 8B); chest smooth, abdomen weakly areolate; ventral side of limbs smooth; short transverse fold above vent. Forelimbs slender;hand large (HND/SVL 0.32); tips of fingers enlarged into large disks, each with circummarginal groove; relative length of fingers: I I 2+/2.25 II 2/3+ III 2.75/2.25 IV; thenar tubercle oval, small and low, about one-fourth length of metacarpal of Finger I; palmar tubercles indiscernible. Hind limbs slender, moderately long; heel reaching to level of eye when legs adpressed forwardly to body; crus moderately long (TibL/SVL 0.48), about as long as thigh; heels meeting each other when knees flexed and thighs held perpendicularly to median plane; foot subequal in length to crus (FoL/TibL 0.96); relative length of toes: I I 2/2.25 II 1.5/3- III 1.75/3 IV 3-/1.75 V (Fig. 8C); inner metatarsal tubercle moderately prominent, elongated, about twothirds length of metatarsus of Toe I; outer metatarsal tubercle small, rounded. Coloration in life. During night, skin on dorsal side of head, trunk, forelimbs, crus and tarsus light yellowishbrown with more or less regular dark brown speckling; indistinct darker brown transverse stripe between upper eyelids; large dark brown, irregularly shaped spot in scapula region, two less distinct, somewhat lighter brown, irregularly shaped spots at level of anterior end of pelvis, separated from each other by half their width; cloacal region with dark brown mottling; dorsal skin of thigh largely unpigmented with only a broad stripe of widely scattered brown pigmentation; weak brown stripe along canthus, continuing behind eye on anterior half of trunk on both sides; tubercles below eye, and in tympanic region at rear end of jaw white; indistinct dark brown stripe running diagonally on middle of tibia, forming interrupted, inverted U-shaped band together with pelvic spots when legs folded against body; ventral side of head, trunk and limbs largely unpigmented and translucent; gular gland bright yellow; fingers and toes yellow (Fig. 7A). During day, basic dorsal coloration brighter, very light brown to bright cream-colored; dark brown dorsal speckles, spots and stripes in more pronounced contrast to basic coloration, more distinctly visible (Fig. 7B). Coloration in preservative. Dorsal basic coloration largely faded to yellowish white; darker dorsal pattern elements light to dark brown, clearly visible; yellow color of gular gland, fingers and toes faded to white (Fig. 8A–C). Variation. The paratypes match the holotype in general appearance, proportions, coloration and color pattern. Mensural variation within the species is shown in Table 1. Pedal webbing variation is I 2+[100]/2.5[90],2.25[10] II 2[50],2+[40],2.25[10]/3[10],3+[40],3.5[50] III 1.75 [80],2-[20]/3[100] IV 3 -[40],3[60]/1.75[100] V. Bioacoustics. Series of advertisement calls of six different males were recorded at the following ambient temperatures: 10.9°C (N = 1), 13.6°C (N = 3), and 16.2°C (N = 2). The advertisement call consisted of five to six, rarely four pulse groups (notes) (Fig. 9). Depending on the ambient temperature, notes were repeated at a rate of 7.1–10.0/s (10.9°C), 8.2–11.7/s (13.6°C), and 10.2–11.4/s (16.2°C). The highest repetition rate was always between the first three notes of a series, the lowest at the end of the series. Each note consisted of 10–11 pulses (Fig. 9). Probably due to echo effects, pulsation was often veiled in the waveforms, especially towards the end of the note. Pulse repetition rate varied from 190–210/s at 10.9°C, 222–250/s at 13.6°C, and 277–292/s at 16.2°C, resulting in a note length of 72–94 ms, 55–70 ms, and 36–50 ms, respectively. Amplitude modulation was prominent within individual notes (Fig. 9). Total call length showed linear temperature dependence and varied from 388–397 ms at 16.2°C, 472–499 ms at 13.6°C, and 572–620 ms at 10.9°C for five-note calls (Fig. 10). Energy maximum showed linear temperature dependence, with 3020–3150 Hz at 10.9°C, 3370–3550 Hz at 13.6°C, and 3660–3810 Hz at 16.2°C (Figs. 9–10). There was no marked frequency modulation. Prominent harmonics were at about 6000–7000 Hz and 9000–11000 Hz (Fig. 9). Ecology and natural history. We collected males and females in swamps in forest openings, or at forest edges (Fig. 11A). Males were found calling above standing bodies of water with thick lower vegetation cover. In Gishwati Forest and Kamiranzovu Swamp in Nyungwe Forest, the species was found calling in syntopy with Hyperolius castaneus and H. discodactylus. One adult male (UTEP 20802) from Kahuzi-Biega National Park (DRC) was found 3.5 meters above ground in montane forest. Tadpoles are unknown. Laurent (1955, 1983) listed the species from bushes in montane forest. Laurent (1982) noted that, in general, the species is common in the foliage of shrubs in dense forests. He also recorded it in banana trees in a deep valley (Nyungwe, Rwanda) and “des trous de prospection” (i.e., prospecting holes likely for gold mining, Upper Lubitshako, Kabobo Plateau, DRC). Etymology. The species epithet derives from the Greek noun φάντασμα (phántasma), meaning ghost or phantom, in allusion to the coloration and general appearance of the new species. The epithet is used as an invariable noun in apposition. Distribution and conservation. The occurrence of the species has been confirmed for several locations in western Rwanda (Nyungwe and Gishwati Forest) and eastern DRC (in and near Kahuzi-Biega National Park, Itombwe Plateau and Kabobo Plateau [Laurent 1982], Fig. 5). We expect the species to be eventually found in the AR of southwestern Uganda and northwestern Burundi. So far, the species has been recorded from only a narrow elevation range between 1962 m (Kamiranzovu Swamp, Rwanda) and ca. 2400 m (May ya Moto [and possibly Luemba], Itombwe Plateau, Laurent 1982). Given the relatively limited overall geographic distribution of the species with an estimated extent of occurrence of 19,088 km 2 (Fig. 5), an estimated area of occupancy of 52 km 2 (both calculated with GeoCAT; Bachman et al. 2011), the detection of the amphibian chytrid fungus in one adult male (UTEP 20791, Greenbaum et al. 2015), and the conservation challenges facing natural areas of the AR (Greenbaum 2017; Ayebare et al. 2018), we categorize this species as Vulnerable under the IUCN Red List criteria (IUCN 2021).

The European Fire salamander is acutely threatened by the chytrid fungus Bsal. Currently no possibility exists to combat Bsal in nature, thus an ex situ conservation programme is necessary. Different possibilities and the current state of knowledge are presented. Spreading of risks through different husbandry systems and different locations is recommended. A first framework is provided through cost estimates for different scenarios and an initial starting phase as an immediate measure.

Toxicodryas blandingii (Hallowell, ���1844��� 1845) (Table 1, Figs. 5���8) Dipsas Blandingii: Hallowell (���1844��� 1845:170); type locality: ��� Liberia, West Africa. ��� Triglyphodon fuscum: Dum��ril, Bibron & Dum��ril (1854:1101); type locality: ��� Grand-Bassam, sur la C��te d���Ivoire (Guin��e)��� [Ivory Coast]. Dipsas fasciata: Fischer (1856:84); type locality: ��� Peki (West-Afrika)��� [Ghana]. Dipsas valida: Fischer (1856:87); type locality: ��� Edina (Grand Bassa County, West-Afrika)��� [Liberia]. Dipsas globiceps: Fischer (1856:89); type locality: ��� Edina (Grand Bassa County, Liberia, West-Afrika).��� Toxicodryas Blandingii: Hallowell (1857:60); comb. nov. Dipsas Fischeri: Jan in Dum��ril (1859:212); no type locality provided. Triglyphodon fuscum var. obscurum: Dum��ril (1861:211); type locality: ��� C��te d���Or ��� [Ghana]. Dipsas regalis: Jan (1871:3, Livraison 38, pl. vi, fig. 2) in Jan & Sordelli (1870 ���1881); type locality: ��� C��te d���Or ��� [Ghana]. Dipsas globiceps var. tumboensis: M��ller (1885:688); type locality: ��� Tumbo-Insel ��� [Guinea]. Boiga blandingi occidentalis: Stucki-Stirn (1979:377); inferred type locality: ���Besongabang��� Cameroon. Boiga blandingi subfulva: Stucki-Stirn (1979:381); type locality: none provided, but limited to Cameroon according to book title. Toxicodryas blandingii was originally described by Hallowell (1845:170) based on a single specimen collected by his friend, ���Dr. Blanding,��� in Liberia. The dorsum and venter of the specimen was noted to have a ���light yellow��� color with a series of blotches of ���leaden colour.��� This specimen reportedly possessed 2 preoculars, 2 postoculars, 272 ventrals, 131 subcaudals, body length (i.e., SVL) of 1.22 meters, and tail length of 0.39 meters. Hallowell (1854) provided additional details of the specimen���s teeth, noted it had 17 ���rows of scales,��� and corrected the tail length to 0.37 meters. Hughes & Barry (1969), Wallach et al. (2014) and Uetz et al. (2019) stated that the type was lost, which is consistent with Malnate (1971), who did not list a type specimen from the ANSP collection. Wallach et al. (2014) noted the type was a 1.67 m specimen, slightly longer than the total length of 1.61 m reported by Hallowell (1845) in the original description, but the longer measurement is likely a typographical error in reference to the latter citation (V. Wallach, pers. comm.). A query by EG to the Philadelphia Academy of Sciences in spring 2020 resulted in location of the type specimen (ANSP 10083, Fig. 6), and a redescription of this specimen is provided below. According to Loveridge (1957:269), the name Dipsas Fischeri was proposed by Jan (in Dum��ril 1859) to combine the minor color pattern variants Dipsas fasciata, D. valida, and D. globiceps named by Fischer (1856). Pel (1852:171) coined the name Dipsas regalis, and as translated by Savage & McDiarmid (2017:73), Pel stated, ���the third species of venomous snake, Naja atropos, belongs to cobras (spectacled snakes) and reaches a length of 6 to 7 feet [1.8���2.1 m]. Its color is entirely black... As this snake in general shows much similarity to a tree snake, Dipsas regalis, which equals it in color and size, but is not venomous.��� Perhaps because of this poor description, Boulenger (1896:78) attributed the latter name to Jan & Sordelli (1870 ���1881), who provided an illustration that served as an appropriate description. Jan listed the name in the Index des Planches for Livraison 38 as Dipsas cynodon Cuv. vari��t��? (D. regalis Schlegel), but according to Savage & McDiarmid (2017:73), the attribution to Hermann Schlegel is in error because he never used the name in any publication. M��ller (1885:687) seemed to suggest that Jan illustrated his specimen (collected by Dr. M��hly from ���Goldk��ste��� [i.e., Gold Coast or modern-day Ghana]) from Basel, but Hughes & Barry (1969:1020) listed a personal communication from M.S. Hoogmoed, who noted the type of D. regalis (specimen ���Leiden 958���) was collected by Pel in February 1844 from Accra, Ghana. Hallowell (1857:60) coined the genus Toxicodryas because he noticed that his specimen of T. blandingii had a ���single channelled posterior tooth on each side... and therefore...[it] cannot belong to the genus Triglophodon [sic] of Dum. and Bibron, which has three.��� Subsequent herpetological publications in the 19 th and early 20 th centuries seemingly ignored Hallowell���s new genus and continued to recognize the taxon in either the genus Dipsas (e.g., Mocquard 1896) or more commonly, Dipsadomorphus (e.g., Boulenger 1896, 1919; de Witte 1933). Schmidt (1923) transferred the taxon to the genus Boiga in his opus on Congolese snakes, recognizing B. (Toxicodryas) blandingii and B. (Toxicodryas) pulverulenta, an action that was followed by most subsequent authors for decades. Based on the placement of African Boiga in the ��� Dipsadidae: Lycodontinae ��� by Underwood (1967), Welch (1982) seems to have been the first to recognize the genus Toxicodryas for both species of the genus, an action followed by Meirte (1992) and observed by most herpetologists in the 21 st century (e.g., Uetz et al. 2020). Boulenger (1896) included all of the above West African, 19 th- century names in the synonymy of Dipsas (Toxicodryas) blandingii. Because the dubious subspecies described by Stucki-Stirn (1979) both occur in Cameroon, where one molecular sample (CAS 253611) from Allen et al. (in press) is recovered in a well-supported clade with West African samples (Fig. 2), we confirm the taxonomic nomenclature of Wallach et al. (2014) in treating these taxa as synonyms of T. blandingii. Marques et al. (2018) noted that northwestern Angolan records from ���Chinchoxo,��� ���Piri-Dembos,��� and ���Quirimbo��� by Peters (1877), Bocage (1895), Parker (1936), and Hellmich (1957a, b) are attributable to T. pulverulenta. However, the morphometric data provided by Hellmich (1957b) for Angolan snakes are inconsistent with the size and scale rows of the latter species, and herein, we consider his records to be attributable to T. vexator sp. nov. Diagnosis. Toxicodryas blandingii, as recognized herein, is restricted to West Africa and west-central Africa (west of the confluence of the Congo and Ubangi rivers), defined by the following combination of characters: maximum SVL> 1 meter (vs. maximum SVL T. pulverulenta and T. adamanteus sp. nov.); DSRN 23���25 (vs. 19���21 in T. pulverulenta and 18���23 in T. adamanteus sp. nov.); DSRM 21���25 (vs. 19���21 in T. pulverulenta and 18���21 in T. adamanteus sp. nov.); cloacal plate usually divided (vs. divided or undivided in T. vexator sp. nov., and always undivided in T. pulverulenta and T. adamanteus sp. nov.); adult males glossy or velvety black with a yellow venter, and adult females light brown, gray, or yellowish-brown with light-brown or cream cross-bars on the flanks, with yellowish-brown venters (vs. both sexes brown to pink with darker cross-bars that often enclose a whitish spot, and the dorsum and venter sprinkled with fine dark brown or black spots in T. pulverulenta and T. adamanteus sp. nov.); hemipenis relatively short and massive (i.e., broad), proximal third covered with spines, distal two-thirds dimpled with a flattened apex (vs. relatively long with long spines mid-way along the shaft that decrease in size towards the apex and base, and with a domed apex in T. pulverulenta and T. adamanteus sp. nov.); venom toxicity LD 50 = 2.85���3.55 mg /kg in mice (vs. venom toxicity LD 50 = 4.88 mg /kg in mice for T. vexator sp. nov.). Redescription of the holotype. ANSP 10083 (Fig. 6) adult female in poor condition, 1330 mm SVL; head triangular and distinct from neck, 1.92% of SVL (25.5 mm); right loreal missing, left loreal partially obscured by supralabials due to cranial damage, upper side tapering superiorly; body triangular; tail moderately long (400 mm; 30.1% of SVL). Supralabials ���/9, ���/4 th, 5 th, and 6 th contacting orbit; infralabials 14/13, 1 st on each side in contact behind mental, 1 st ���4 th /1 st ���4 th contacting anterior chin shields and 4 th ���7 th /4 th ���7 th contacting posterior chin shields; 2 preoculars; 3 postoculars (on left, missing on right); temporals ���/2 + 2; 2 internasals; nasal divided (on left, missing on right); frontal slightly longer than wide, only left side undamaged; dorsal scale rows 23 one head length posterior to jaw rictus, 23 at midbody, 17 one head length anterior to vent, smooth and oblique, vertebral scales broad and apically flattened; ventrals 273 (standard), 271 (Dowling); cloacal plate undivided; paired subcaudals 132. Coloration (in preservative). After approximately 176 years in preservation, specimen is faded, with creamy tan background color in dorsal and ventral views. Brown markings on posterior edge of supralabials and dorsum of head. Irregular brown and dark brown blotches and saddles on dorsum from neck to tip of tail (Fig. 6). Variation. Morphometric variation of Toxicodryas blandingii is shown in Table 1. M��ller (1885:688) provided data for a snake from Ghana with 15 infralabials and noted that most of its scales have two ���Endgruben��� [terminal pits], which likely refer to apical pits. In his description of Dipsas globiceps var. tumboensis M��ller (1885) noted his specimen from Guinea (Fig. 7) had 147 subcaudals. In snakes from West Africa (without separating by sex), Angel (1933) noted a temporal formula of 2 + 2 or 2 + 3, 21���25 scales at midbody, 240���289 ventrals, 120���147 subcaudals, either an undivided or divided cloacal plate, and a maximum total size of 2290 mm, and nearly verbatim variation was listed by Villiers (1950a), Doucet (1963), Stucki-Stirn (1979), Chippaux (2006), and Trape & Man�� (2006). However, in snakes from Ghana, Swiecicki (1965:302) noted a maximum total length of 2450 mm for a ���black form��� individual, Gauduin (1970) listed the maximum total length as 2700 mm (600 mm tail) for Cameroon, Chirio & LeBreton (2007) provided a slightly larger total length of 2740 mm for Cameroon, and Luiselli et al. (1998a) noted a maximum size of 2800 mm, presumably for Nigeria. Villiers (1951) noted an unsexed individual from Benin with 115 subcaudals. Cansdale (1965) documented 21���25 scales at midbody, and Segniagbeto et al. (2011) documented snakes from Togo with 19���24 scales at midbody and 102���159 subcaudals. In our examined specimens, temporal formula includes the variation noted by Angel (1933), but is more extensive (2 +5, 3 + 4, 3 + 3, 1 + 5, 3 + 2, or 2 + 4), and either supralabials 3���5 or 4���6 contact the eye, which is consistent with the observations of Angel (1933), Villiers (1950b), and Chippaux (2006); the latter author also noted that sometimes only 2 supralabials contact the eye. Rasmussen (1997a) noted specimens with the 4th���5th, 5th���7 th, or 4th���7 th supralabials in contact with the eye, and in general, this species has sloping and smooth scales with apical pits, and the vertebral row is greatly enlarged. The holotype, one male and one female from Liberia (Loveridge 1941; Johnsen 1962), one male from Gabon (Pauwels et al. 2002b), one male from DRC (RBINS 10888), and a juvenile from Cameroon (Werner 1897) are unusual in having an undivided cloacal plate, because all other examined specimens have a divided cloacal plate, including the type specimens of Dipsas fasciata, D. valida, and D. globiceps (Fischer 1856). Rasmussen (1997a) remarked that his specimens have either a divided or undivided cloacal plate. In his book on West and Central African snakes, including countries west of the Congo River, Chippaux (2006:154) noted the anal [cloacal plate] is sometimes entire, but more often divided. Trape & Man�� (2006) stated that the cloacal plate is almost always divided. Segniagbeto et al. (2011) noted individuals with divided or undivided cloacal plates in Togo. Combined descriptions by Fischer (1856) of the teeth of Dipsas fasciata, D. valida, and D. globiceps (all now synonyms of T. blandingii) suggest the species has 9 maxillary teeth that increase in size posteriorly, followed by two fangs (three on the right side in one specimen), and 12 mandibular teeth, which decrease in size posteriorly. In snakes from Ghana, Leeson (1950) noted 10���11 maxillary teeth, becoming larger posteriorly, and two fangs followed by a shorter fang; fourteen large palatine and pterygoid teeth, and 15 mandibular teeth (anterior ones largest). Taylor & Weyer (1958:1217) described a Liberian specimen with 9���10 maxillary teeth (on different sides) that increase in size from the 1 st to 4 th tooth, and then become subequal; two fangs occur after this series of teeth, and after a short diastema, there is a third fang with only traces of a groove. A second Liberian specimen had 10 maxillary teeth followed by three fangs, the last of which had only ���a suggestion of a groove.��� Based on specimens ranging from Guinea to Congo, Rasmussen (1997a:98) noted 10 maxillary teeth followed by three enlarged, furrowed venomous teeth, with the 3 rd fang slightly smaller than the previous two. Fischer (1856) provided detailed descriptions of the color patterns of West African Dipsas fasciata, D. valida, and D. globiceps (all now synonyms of T. blandingii), which seem to suggest he examined a subadult male that had been kept in alcohol for a long (unspecified amount) time (D. fasciata), an adult female (D. valida), and a subadult that retained juvenile coloration (D. globiceps). In his description of Dipsas globiceps var. tumboensis M��ller (1885:689) noted his specimen from Guinea (Fig. 7) had a gray-reddish dorsum with 30 black transverse bands, usually containing milky white spots. The frontal, supraoculars, and occipital scales had large black spots, the labial scales and postoculars were edged with black, and the head shields had multiple milk-white speckles. The tail was bright red with dark, irregular transverse bands. Aspects of this coloration description are highly unusual for this species (e.g., bright red tail), and more typical of T. pulverulenta, but the black edging of the labial scales, number of preoculars (3), supralabials in contact with the eye (5 and 6), ventrals (269), and subcaudals (147) clearly indicate this taxon is a synonym of T. blandingii (Fig. 7, Tables 1���2). Mocquard (1887:80) described a recently collected, unsexed subadult (���la longueur du tronc��� [trunk length] 1.1 m) from Gabon as having a dorsal color of a general tint of Burgundy with slightly darker spots on the flanks that have a dirty white spot a little above their lower edge. Mertens (1938) described an adult male from Cameroon as solid black dorsally and ventrally, with the exception of the anterior third of the venter, which was white, but the ventral scales had dark gray edges. The labial scales were gray with vertical black borders. Villiers (1950b) described the color pattern of an unsexed individual from Ivory Coast as sooty black or brownish in places on the dorsum; underside iridescent dark gray posteriorly, becoming whitish anteriorly, with the posterior edge of the ventrals edged with gray; underside of head white, and labials whitish and edged in black. Another unsexed individual from Liberia was described as bluish black above, yellow below; supralabials yellow with black edges, and posterior part of venter and underside of tail black. A third unsexed individual from Liberia had identical coloration to the latter one, except for the presence of whitish bars on the neck. Leeson (1950) noted that snakes from Ghana have a dull green or gray dorsum. Monard (1951:162) described an unsexed individual from Cameroon as a beautiful light redbrown, ���barr����� [barred] with dark brown. Taylor & Weyer (1958:1217) described a Liberian brown-phase female with pale grayish green on the ventral side of the head and neck, merging into gray with ���a greenish cast��� 12.7 cm posteriorly, and at 40.6 cm behind the head, it transitioned into plain tan to the tip of the tail. Isemonger (1962:12) remarked that this species has a ���delicate bloom on the skin.��� Cansdale (1965:43) described a highly unusual color pattern for juveniles by noting that ���the young brown form is pink with irregular chocolate markings that break up its outline very effectively and make it difficult to pick out in a tree or shrub.��� Leston & Hughes (1968:753) described an unusual specimen from Ghana as ���pale grey with darker greyish-green transverse bands, the bands irregular but more or less diamond shaped on each side. The ventrals are also grey but more glossy.��� Groves (1973:107) described the coloration of hatchlings from a captive Liberian female as ���light grey background colour with pinkish undertones; black, roughly oval, lateral blotches narrowing as they approach the midline, where many of them fail to conjoin; top of head light grey; belly dark grey.��� Rasmussen (1997a:98) noted the scales of his specimens were dull and almost dusty, a sentiment also shared by Cansdale (1965). Adult males were solid black on the dorsum and yellow on the venter (becoming black posteriorly), whereas adult females were noted to be gray, brown or yellow-brown on the dorsum and yellow-brown on the venter, sometimes without transverse bands. Hughes (2000:8) noted juvenile and subadult (approximately 1 meter in total length or less) snakes had a dorsal coloration that was ���a distinctively bright and contrasting pattern of chocolate brown blotches.��� He noted that most male specimens lose this coloration as they age, becoming increasingly melanistic, and although exceptions are possible, this melanistic progression does not seem to occur in females. Chippaux (2006:154) noted there are two dorsal color morphs: (1) uniform black or dark blue with ���reflets velout��s��� [velvety reflections] or (2) gray with darker, poorly defined transverse spots. The venter was noted as dull yellow to charcoal gray, and juvenile coloration as light brown with darker transverse ring-shaped spots. Stucki-Stirn (1979), perhaps confused by the tw, Published as part of Greenbaum, Eli, Allen, Kaitlin E., Vaughan, Eugene R., Pauwels, Olivier S. G., Wallach, Van, Kusamba, Chifundera, Muninga, Wandege M., Aris- Tote, Mwenebatu M., Mali, Franck M. 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Toxicodryas pulverulenta (Fischer, 1856) (Table 2, Figs. 8, 11) Dipsas pulverulenta: Fischer (1856:11); type locality: ��� Edina, Grand Bassa County in Liberia (West-Afrika).��� Dipsadomorphus Boueti: Chabanaud (1917a:373); type locality: none provided, but subsequently clarified to ��� Porto-Novo ��� ��� Dahomey ��� [Porto-Novo, Benin] by Chabanaud (1917b:12). As noted by Cer��aco et al. (2018), the description of this species was based on two specimens (only one syntype remains today according to Hallermann 1998 and Uetz et al. 2019), one of which was depicted in plate 4 of livraison 38 by Jan & Sordelli (1871). In a footnote to the nomenclatural history of Boiga (Toxicodryas) pulverulenta, Hughes & Barry (1969:1020) wrote ���Dr. Ladiges [then curator at ZMH] tells us that the type is still in Hamburg and is from St. Thom��, not Edina, Grand Bassa County, Liberia as stated by Loveridge (1958:269).��� The latter citation is in error (Loveridge 1957). Cer��aco et al. (2018) deduced that the information from Ladiges was based on an old label associated with the presumed remaining type specimen. Because extensive fieldwork on the island of S��o Tom�� over the last century failed to document this species, Cer��aco et al. (2018) concluded that it does not occur there, and the original type locality from Fischer (1856) ���Edina, Grand Bassa County in Liberia (West-Afrika)��� is correct. Moreover, the former authors determined that the pholidosis from this presumed type (Cer��aco et al. 2018:fig. 1) is not consistent with the extensively detailed original description, and thus, it is not a type specimen (contra Uetz et al. 2019). Although we agree with this conclusion, an examination of this specimen (ZMH R04376) by J. Hallermann (pers. comm.) found some differences in the morphometric data provided by Cer��aco et al. (2018) (e.g., SVL = 635 mm, not 880 mm), and we used these updated data in our analyses of morphological data (Table 2). Chabanaud (1917a:375), convinced that the odd configuration of subcaudals (combination of single and double subcaudals near the vent) seen in one male and one female was unique to Colubridae, named the taxon Dipsadomorphus boueti from these specimens that were donated by ���Dr Bouet,��� who collected for the Paris Museum in Ivory Coast (1909) and Dahomey (1910���1913). Unfortunately no specific type locality was provided. Chabanaud (1917b) then clarified and corrected himself by stating that both types were males (the mistaken female was a juvenile), and they were collected from ���Porto-Novo��� in Dahomey, which is modern-day Porto-Novo, the capital city of Benin. Chabanaud (1917c) subsequently realized that his specimens of D. boueti represented T. pulverulenta individuals with abnormal subcaudals, and he synonymized the former taxon with the latter (as D. pulverulentus). We agree with this taxonomic placement, because the types of D. boueti have subcaudal counts (106 and 116) and TL/SVL ratios (0.25 and 0.28) that are most consistent with T. pulverulenta (Table 2). The Porto-Novo locality is on the eastern edge of the Dahomey Gap (sensu Demenou et al. 2016:fig. 1), a renowned biogeographic barrier to at least some forest-specialist species in West Africa. Because T. pulverulenta does not seem to be a strict forest specialist (see Habitat below), and the Porto-Novo locality occurs on the eastern edge of the Dahomey Gap, it is likely that the Gap is not a barrier to dispersal for this species. We therefore hypothesize that the Niger Delta is the biogeographic barrier separating T. pulverulenta from its cryptic sister taxon T. adamanteus sp. nov. Diagnosis. A species of Toxicodryas restricted to West Africa, west of the Niger Delta, defined by the following combination of characters: maximum SVL 1 meter in T. blandingii and T. vexator sp. nov.), DSRN 19���21 (vs. 23���25 in T. blandingii and 23���29 in T. vexator sp. nov.), DSRM 19���21 (vs. 21���25 in T. blandingii and T. vexator sp. nov.); cloacal plate undivided (vs. usually divided in T. blandingii, and divided or undivided in T. vexator sp. nov.); both sexes brown to pink with darker cross-bars that often enclose a whitish spot, and the dorsum and venter sprinkled with fine dark brown or black spots (vs. adult males glossy or velvety black with a yellow venter, and adult females light brown, gray, or yellowish-brown with light-brown or cream cross-bars on the flanks, with yellowish-brown venters in T. blandingii and T. vexator sp. nov.); hemipenis relatively long with long spines mid-way along the shaft that decrease in size towards the apex and base, with a domed apex (vs. hemipenis relatively short and massive [i.e., broad], proximal third covered with spines, distal two-thirds dimpled with a flattened apex in T. blandingii and T. vexator sp. nov.). Variation. Morphometric variation of Toxicodryas pulverulenta is shown in Table 2. Chabanaud (1917a) first noted that some individuals (including the type of Dipsadomorphus boueti) can have a few single subcaudals posterior to the cloacal plate. Bogert (1940) provided morphometric data, but he did not distinguish between populations from Liberia (T. pulverulenta) and former French Cameroon (T. adamanteus sp. nov.), except that ���the Liberia specimens are distinctly more reddish brown than the Cameroon specimens.��� However, he listed the maximum total length of a male (1112 mm) and female (1050 mm) T. pulverulenta from Liberia. In snakes from West Africa (without noting sex), including Cameroon where T. adamanteus sp. nov. occurs, Angel (1933:146) noted temporal formula variation of 2 + 2 (rarely 2 + 3 or 3 + 2 or 1 +2), 236���276 ventrals, 96���132 subcaudals, and a maximum size of 1225 mm; nearly identical data were reported by Villiers (1950a), Doucet (1963), Stucki-Stirn (1979), and Chippaux (2006). Although all of our examined specimens and most literature records noted the 3 rd to 5 th supralabial in contact with the eye (e.g., Villiers 1950b), Chippaux (2006) documented individuals with the 4 th to 6 th supralabial in contact with the eye, and sometimes, only two scales in contact with the eye, but some of these specimens might be attributable to T. adamanteus sp. nov. Segniagbeto et al. (2011) reported snakes from Togo with 165���175 ventrals, which is undoubtedly erroneous. Fischer (1856:83) noted his type specimen had seven maxillary teeth that were oriented nearly backwards, becoming larger posteriorly. These were followed by two larger teeth (i.e., fangs) that were furrowed in a ���besonderen Hauttasche��� [special skin pocket]. There were 10���12 mandibular teeth, which were slightly curved towards the back of the mouth, and increased in size posteriorly. Bogert (1940:61) remarked ��� five specimens examined show variation from eleven to thirteen anterior subequal teeth followed after a very short diastema by two larger grooved fangs and a smaller fang, the total number of teeth being fourteen to eighteen.��� Because only two of his examined specimens originated from former French Cameroon (attributable to T. adamanteus sp. nov.), at least three of these specimens were from Liberia, which are attributable to T. pulverulenta. In snakes from Ghana, Leeson (1950) noted 11���13 maxillary teeth, becoming slightly larger posteriorly, followed by 2 fangs, and sometimes a 3 rd, smaller fang; 14���16 palatine and pterygoid teeth, and 15 mandibular teeth with the anteriormost ones largest. Johnsen (1962) reported that his specimen from Liberia had 11 maxillary teeth on one side, and six on the other. Based on a specimen from Liberia, Malnate (1972) noted the species lacks posterior hypapophyses. In his original description of the species, Fischer (1856:83) described the coloration in great detail as chocolate brown above, yellow below, finely dotted everywhere. On each side, near the back, there was a large number (60��� 70) of pale red spots that lacked dark edging and extended over 4���6 scales. Usually the spots on one side alternated with those on the other; sometimes they also were opposite to each other and in this case were connected to weak ���Querbinden��� [cross-ties] by bright red connecting strips that extended over the back. Usually there was a small black spot under each of these spots on the outermost tip of the corresponding ventral shields. The innumerable fine black points, with which the whole body was sown, were grouped on the abdominal shields on each side at the point where they bent over to rise sideways, to form a black spot, which in their succession looked like a black longitudinal band, whereby the narrow belly appeared delimited from the flanks. Head was brown and without black lines. Upper lip, lower lip, throat yellow, dotted with black. G��nther (1858:173) described the dorsum of two Nigerian specimens as ���brown with a strong cast of purple��� with elliptical transverse streaks, and at mid-body, these streaks had a small yellow spot in their center. In his description of Dipsadomorphus boueti, Chabanaud (1917a) noted the types were light brownish gray and dotted with brown, whereas the supralabials and venter were yellowish gray. Leeson (1950) described animals from Ghana as brownish red on the dorsum, with ���dull brown��� heads, and ���lightly coloured��� patches on the flanks that had a black edge on the lower margins. There were more narrow light gray bands on the anterior third of the body that gradually diminished to form light gray patches on the posterior two-thirds of the body. The ventral surface of the head was white or cream, whereas the venter of the body was pinkish with numerous brown spots. Brown lines ���commence���[ed] just before the middle of the body on each side of the ventrals, and continued along the edge of the ventrals to the tip of the tail. In his description of two specimens from Ivory Coast, Villiers (1950b) noted their color pattern was pale brownish gray, the dorsal scales dotted with black, the back with alternate dark brown diamond spots (some ocellated with white). Yellowish ventral surface with two black lateral lines. Doucet (1963) noted the dorsal coloration ranged from uniform reddish or yellowish or powdery brown, sometimes with dark bars, with ventral coloration ranging from yellowish to pinkish. Chippaux (2006) noted dorsal coloration as dark beige or reddish with occasional dark gray designs or crossbars; venter pinkish with two dark lateral lines. Based on photographs of an adult male from Guinea (Fig. 11B), the base of the tongue is orangish red, and the forked tip is silvery white with black edging. Our observations of live specimens suggest the dorsal scales have an almost satiny sheen, similar to the appearance of a spider web (MOR, pers. obs.). Hemipenis. Bogert (1940) did not note whether his hemipenis description was based on specimens from Liberia (T. pulverulenta) or former French Cameroon (T. adamanteus sp. nov.). Doucet (1963:301) described the hemipenis of a snake from Ivory Coast as very different from that of B. [Toxicodryas] blandingi. Quite elongated, thorny at the base and dimpled at the apex, it is not bifid. The spines on either side of the sperm groove are very long in the middle part and decrease in size towards the apex and the base. The apex is domed, not flattened. Diet. Villiers (1950a) noted both species of Toxicodryas in West Africa feed mainly on birds. Cansdale (1954) reported an individual from Ghana with two young mice in its stomach. Johnsen (1962:121) reported an adult male from Liberia with ���a small insect-eating bird��� in its stomach. In their paper on snakes of Ghana, Leston & Hughes (1968:754) noted the presence of undigested hair and a 10-cm long rodent tail in the stomachs of two specimens, and that ���this suggests the attraction of Cocoa is for its Rodent fauna.��� Another specimen contained the foot and tail of an Agama sp. lizard (sensu Leach�� et al. 2017). B��hme (2000) noted the diet of snakes from Guinea included small mammals (shrews and rodents), adult and nestling birds, and lizards with well-developed limbs. Greene (1989) suggested that there is an ontogenetic shift in diet from mostly lizards in young individuals to mostly birds and/or mammals as adults, and some individuals can ingest a third of their body weight if they eat more than one prey item in a nest or roost. Behavior. In a paper on Guinean snakes, B��hme (2000) classified the species as relatively common and nocturnal. Reproduction. An adult female found in Ghana in early September contained eggs ���about 8 mm maximum breadth and between 30 and 35 mm long��� attached to the left and right ovaries (Leston & Hughes 1968). Habitat. Menzies (1966) documented several specimens from forest in Sierra Leone, but one animal found at Rokupr seemed to occur in a habitat labeled as mangrove and coastal savanna. Leston & Hughes (1968:754) noted that this species was very common in cocoa tree pods in Ghana. Hughes & Barry (1969) listed the habitat as forest. Leston (1970:143) encountered several snakes in Ghana in trees (including one in a rotten cocoa pod), ���amidst old files on an office shelf,��� on a 1.5-meter high cocoa tree in a greenhouse, and in savanna. Hughes (1988) noted the species only from rainforest in Ghana. R��del & Mahsberg (2000) found snakes in Ivory Coast from thick undergrowth in a swamp bordered by fields and secondary forest, and swampy primary forest. Branch & R��del (2003) captured a juvenile in a funnel trap on the ground in closed-canopy forest in Ivory Coast. In Togo, Segniagbeto et al. (2011) noted the species is most common in forest, but some specimens were found outside of it, presumably in savanna. Geographic distribution and habitat. Based on molecular data from Allen et al. (in press) and patterns of our morphometric data (Table 2), we hypothesize that this species occurs west of the Niger Delta from Guinea to Nigeria. Venom. Venom composition and effects are unknown (Weinstein et al. 2011)., Published as part of Greenbaum, Eli, Allen, Kaitlin E., Vaughan, Eugene R., Pauwels, Olivier S. G., Wallach, Van, Kusamba, Chifundera, Muninga, Wandege M., Aris- Tote, Mwenebatu M., Mali, Franck M. M., Badjedjea, Gabriel, Penner, Johannes, R��del, Mark-Oliver, Rivera, Jacqueline, Sterkhova, Viktoria, Johnson, Grant, Tapondjou, Walter P. & Brown, Rafe M., 2021, Night stalkers from above: A monograph of Toxicodryas tree snakes (Squamata Colubridae) with descriptions of two new cryptic species from Central Africa, pp. 1-44 in Zootaxa 4965 (1) on pages 24-27, DOI: 10.11646/zootaxa.4965.1.1, http://zenodo.org/record/4723024, {"references":["Fischer, J. G. (1856) Neue Schlangen des Hamburgischen Naturhistorischen Museums. Abhandlungen aus dem Gebiete der Naturwissenschaften herausgegeben von Naturwissenschaftlichen Verein in Hamburg, 3, 79 - 116 + 3 pl.","Chabanaud, P. (1917 a) Enumeration des ophidiens non encore etudies de l'Afrique occidentale, appartenant aux collections du Museum avec la description des especes et des varietes nouvelles. Bulletin du Museum d'Histoire Naturelle, Paris, 22, 362 - 382. https: // doi. org / 10.5962 / bhl. part. 17132","Chabanaud, P. (1917 b) Note complementaire sur les ophidiens de l'Afrique occidentale, avec la description d'une espece nouvelle. Bulletin du Museum d'Histoire Naturelle, Paris, 23, 7 - 14.","Ceriaco, L. M. P., Marques, M. P. & Bauer, A. M. (2018) Miscellanea Herpetologica Sanctithomae, with a provisional checklist of the terrestrial herpetofauna of Sao Tome, Principe and Annobon islands. Zootaxa, 4387 (1), 091 - 108. https: // doi. org / 10.11646 / zootaxa. 4387.1.4","Hallermann, J. (1998) Annotated catalog of the type specimens of the herpetological collection in the Zoological Museum of the University of Hamburg. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 95, 197 - 223.","Uetz, P., Cherikh, S., Shea, G., Ineich, I., Campbell, P. D., Doronin, I. V., Rosado, J., Wynn, A., Tighe, K. A., McDiarmid, R., Lee, J. L., Kohler, G., Ellis, R., Doughty, P., Raxworthy, C. J., Scheinberg, L., Resetar, A., Sabaj, M., Schneider, G., Franzen, M., Glaw, F., Bohme, W., Schweiger, S., Gemel, R., Couper, P., Amey, A., Dondorp, E., Ofer, G., Meiri, S. & Wallach, V. (2019) A global catalog of primary reptile type specimens. Zootaxa, 4695 (5), 438 - 450. https: // doi. org / 10.11646 / zootaxa. 4695.5.2","Hughes, B. & Barry, D. H. (1969) The snakes of Ghana: a checklist and key. Bulletin de l'Institut fondamental d'Afrique noire. Serie A, Sciences naturelles, 31 (3), 1004 - 1041.","Loveridge, A. (1957) Check list of the reptiles and amphibians of East Africa (Uganda; Kenya, Tanganyika; Zanzibar). Bulletin of the Museum of Comparative Zoology, Harvard, 117 (2), 151 - 362 + i - xxxvi (index).","Chabanaud, P. (1917 c) Revision de quelques reptiles d'Afrique et description de trois especes nouvelles. Bulletin du Museum d'Histoire Naturelle, Paris, 23, 442 - 454.","Demenou, B. B., Pineiro, R. & Hardy, O. J. (2016) Origin and history of the Dahomey Gap separating West and Central African rain forests: Insights from the phylogeography of the legume tree Distemonanthus benthamianus. Journal of Biogeography, 43 (5), 1020 - 1031. https: // doi. org / 10.1111 / jbi. 12688","Bogert, C. M. (1940) Herpetological results of the Vernay Angola expedition. Bulletin of the American Museum of Natural History, 77, 1 - 107, pl. I.","Angel, F. (1933) Les Serpents d'Afrique Occidentale Francaise. Larose Editeur, Paris, 246 pp.","Villiers, A. (1950 a) Initiations Africaines. II. Les Serpents de l'Ouest Africain. Institut Francais d'Afrique Noire, Dakar, Senegal, 148 pp.","Doucet, J. (1963) Les serpents de la Republique de Cote d'Ivoire. Serpents venimeux. Acta Tropica, 20 (3 - 4), 297 - 340.","Stucki-Stirn, M. C. (1979) A Comparative Study of the Herpetological Fauna of the former West Comeroon [sic] / Africa: With a Classification and Synopsis of 95 Different Snakes and Description of Some New Sub-species. Snake Report 721. Herpeto- Verlag, Teuffenthal, Switzerland, 650 pp.","Chippaux, J-P. (2006) Les Serpents d'Afrique Occidentale et Centrale. 3 rd Edition. IRD Editions, Paris, 311 pp.","Villiers, A. (1950 b) Catalogues. IV. La Collection de Serpents de l'I. F. A. N. Institut Francais d'Afrique Noire, Dakar, Senegal, 155 pp.","Segniagbeto, G. H., Trape, J. F., David, P., Ohler, A., Dubois, A. & Glitho, I. A. (2011) The snake fauna of Togo: Systematics, distribution and biogeography, with remarks on selected taxonomic problems. Zoosystema, 33 (3), 325 - 360. https: // doi. org / 10.5252 / z 2011 n 3 a 4","Leeson, F. (1950) Identification of Snakes of the Gold Coast. The Crown Agents for the Colonies, London, x + 142 pp.","Johnsen, P. (1962) Notes on African snakes, mainly from northern Rhodesia and Liberia. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kjobenhavn, 124, 115 - 130.","Malnate, E. V. (1972) Observations on the vertebral hypapophyses and associated musculature in some snakes, with special reference to the Colubridae. Zoologische Mededelingen, 47 (18), 225 - 239.","Gunther, A. (1858) Catalogue of Colubrine Snakes in the Collection of the British Museum. Trustees of the British Museum, London, xvi + 281 pp. https: // doi. org / 10.5962 / bhl. title. 13272","Cansdale, G. (1954) Gold Coast snakes - a complete list. The Nigerian Field, 19, 118 - 132.","Leston, D. & Hughes, B. (1968) The snakes of Tafo, a forest cocoa-farm locality in Ghana. Bulletin de l'Institut Francaise d'Afrique Noire, 30 A, 737 - 770.","Leache, A. D., Grummer, J. A., Miller, M., Krishnan, S., Fujita, M. K., Bohme, W., Schmitz, A., Lebreton, M., Ineich, I., Chirio, L., Ofori-Boateng, C., Eniang, E. A., Greenbaum, E., Rodel, M. - O. & Wagner, P. (2017) Bayesian inference of species diffusion in the West African Agama agama species group (Reptilia, Agamidae). Systematics and Biodiversity, 15 (3), 192 - 203. https: // doi. org / 10.1080 / 14772000.2016.1238018","Bohme, W. (2000) Diversity of a snake community in a Guinean rain forest (Reptilia, Serpentes). In: Rheinwald, G. (Ed.), Isolated Vertebrate Communities in the Tropics. Proceedings of the 4 th International Symposium in Bonn. Bonner zoologische Monographien, 46, 69 - 78.","Greene, H. W. (1989) Ecological, evolutionary, and conservation implications of feeding biology in Old World cat snakes, Genus Boiga (Colubridae). Proceedings of the California Academy of Sciences, 46 (8), 193 - 207.","Menzies, J. I. (1966) The snakes of Sierra Leone. Copeia, 1966 (2), 169 - 179. https: // doi. org / 10.2307 / 1441123","Leston, D. (1970) Some snakes from the forest zone of Ghana. British Journal of Herpetology, 4 (6), 141 - 144.","Hughes, B. (1988) Herpetology in Ghana (West Africa). British Herpetological Society Bulletin, (25), 29 - 37.","Rodel, M. - O. & Mahsberg, D. (2000). Vorlaufige Liste der Schlangen des Tai-Nationalparks / Elfenbeinkuste und angrenzender Gebiete. Salamandra, 36 (1), 25 - 38.","Branch, W. R. & Rodel, M. - O. (2003) Herpetological survey of the Haute Dodo and Cavally forests, western Ivory Coast, Part II: Trapping results and reptiles. Salamandra, 39 (1), 21 - 38.","Weinstein, S. A., Warrell, D. A., White, J. & Keyler, D. E. (2011) \" Venomous \" Bites from Non-Venomous Snakes: A Critical Analysis of Risk and Management of \" Colubrid \" Snake Bites. Elsevier, Amsterdam, Boston, Heidelburg, London, New York, Oxford, Paris, San Diego, San Francisco, Singapore, Sydney and Tokyo, xxvii + 336 pp."]}

Toxicodryas adamanteus sp. nov. (Table 2, Figs. 8, 12–13) We hypothesize that this new, cryptic species occurs in western, central and eastern Africa, east of the Niger Delta, and it has been considered to be conspecific with Toxicodryas pulverulenta since it was first documented to occur in Angola by Peters (1877). The recognition of this new species is supported by evidence from molecular data (Fig. 2) and significant differences in subcaudal scale counts (see Results). Diagnosis. A species of Toxicodryas restricted to West, Central and East Africa, east of the Niger Delta, defined by the following combination of characters: maximum SVL 1 meter in T. blandingii and T. vexator sp. nov.), DSRN 18–23 (vs. 23–25 in T. blandingii and 23–29 in T. vexator sp. nov.), DSRM 18–21 (vs. 21–25 in T. blandingii and T. vexator sp. nov.); cloacal plate undivided (vs. usually divided in T. blandingii, and divided or undivided in T. vexator sp. nov.); both sexes brown to pink with darker cross-bars that often enclose a whitish spot, and the dorsum and venter sprinkled with fine dark brown or black spots (vs. adult males glossy or velvety black with a yellow venter, and adult females light brown, gray, or yellowish-brown with light-brown or cream cross-bars on the flanks, with yellowish-brown venters in T. blandingii and T. vexator sp. nov.); hemipenis relatively long with long spines mid-way along the shaft that decrease in size towards the apex and base, with a domed apex (vs. hemipenis relatively short and massive [i.e., broad], proximal third covered with spines, distal twothirds dimpled with a flattened apex in T. blandingii and T. vexator sp. nov.). Holotype. UTEP 22204 (field no. ELI 2213; Figs. 8, 12–13), adult male from Npenda village, NE of Lake Tumba (00.7465° S, 18.2243° E, 311 m), Equateur Province, DRC, collected by local Twa people and brought to Eli Greenbaum, Chifundera Kusamba, Wandege M. Muninga, and Mwenebatu M. Aristote on 8 July 2013. Paratopotype. UTEP 22203 (field no. ELI 2212) adult female with same collection details as the holotype. Paratype. RBINS 2699 (formerly RBINS 9127) (field no. Paul Leloup #26), adult female from Région Tshabondo (2.690861° S, 27.341972° E), South Kivu Province, DRC, collected by Paul Leloup on 11 October 1958. Description of the holotype. Adult male, 812 mm SVL; head weakly triangular and moderately distinct from neck, 2.4% of SVL (19.3 mm); interocular distance 13.4 mm, pupil elliptical, eye diameter 5.2 mm; loreal nearrectangular, shorter (1.7 mm) than high (2.0 mm), slightly tapering superiorly and vertically; body semi-triangular; tail moderately long (27.7% of SVL). Supralabials 8/8, 3 rd –5 th /3 rd –5 th contacting orbit; infralabials 13/12, 1 st on each side in contact behind mental, 1 st –5 th /1 st –5 th contacting anterior chin shields and 5 th –7 th /5 th –7 th contacting posterior chin shields; 1/1 preocular; 2/2 postoculars; temporals 2 + 3 + 3/2 + 3 + 3; 2 internasals; nasal divided; frontal width and length equal (6.6 mm); dorsal scale rows 21 one head length posterior to jaw rictus, 19 at midbody, 15 one head length anterior to vent, smooth and oblique with apical pits visible on the neck, vertebral scales broad and apically flattened; ventrals 264 (standard), 262 (Dowling); cloacal plate undivided; paired subcaudals 117; both hemipenes everted. Coloration (in life) of the holotype. Silvery gray-brown over the entire length of the dorsum including the head, with similarly colored but darker diamonds occurring laterally over the full length of the neck, body, and tail. These diamonds are elongated vertically, have pale gray centers, and often have black spots at the top and bottom corners. Between each diamond on the body and neck is a more vaguely defined, pale gray diamond or stripe. The lateral and antero-dorsal sides of the head are speckled, as is the ventral side of the head, neck, body, and tail. The venter is otherwise white, with the speckles forming two pale stripes running down either side of the ventrals and subcaudals. The base of the tongue is orangish red, and the forked tip is silvery white with black edging. Coloration (in preservative) of the holotype. This specimen’s coloration has become slightly darker and browner than it was in life, with less pronounced patterning on the flanks, but otherwise the appearance is similar to the coloration in life. Variation. Morphometric variation of Toxicodryas adamanteus sp. nov. is shown in Table 2. We observed extensive temporal scale variation, including 1 + 1, 1 + 2, 2 + 2 (most commonly), 2 + 3, 2 + 5, 3 + 2, 3 + 3, and 4 + 3. Chabanaud (1917c) described a male from Gabon with supralabials 3–6 contacting the eye, and this specimen seems to be the size record at 1,225 mm total length (995 mm SVL, 230 mm tail length). Schmidt (1923) listed ventral counts of 251–269 in snakes from DRC, and noticed one individual that had a preocular fused to the supraocular on one side, and in two individuals, the loreal was fused to the lower portion of the preocular and thus contacted the eye. Laurent (1956) noticed that snakes from DRC (i.e., T. adamanteus sp. nov.) had more subcaudals than snakes from West Africa (i.e., T. pulverulenta). Skinner (1973) noted ventral scale counts range from 240–269, subcaudal scale counts range from 105–126 (identical to Pitman 1974), and the maximum size is about 2 meters, substantially larger than all other published records, and thus, highly doubtful. De Witte (1975) provided data for ventral scale counts of DRC snakes ranging from 235–242 (males) and 239–249 (females), and subcaudal counts of 112–120 (both sexes). Spawls & Branch (2020) listed the maximum size as “about 1.25 m ” but no specific locality or record was provided. Although most of our examined specimens and literature records noted the 3 rd to 5 th supralabial in contact with the eye, some individuals have the 4 th to 6 th supralabial in contact with the eye (e.g., Loveridge 1937) and one specimen from Gabon (CAS 258155) had only the 4 th and 5 th supralabial in contact with the eye. In snakes from Uganda, Pitman (1974) reported ventral scale counts of 240–269 and subcaudal counts of 105–126 (not distinguished by sex). In de Witte’s (1975) study of snakes from Virunga National Park in eastern DRC, he noted ventrals range from 235–242 in males and 239–249 in females; subcaudals ranged from 112–120 in both sexes. Rasmussen (1997b:106) described individuals with 3 or 4 postoculars, 7–9 supralabials, 9–13 infralabials, 236–278 ventrals, and 96–132 subcaudals (sometimes undivided). In general, he noted this species has sloping and smooth scales with apical pits, and the vertebral row is more or less enlarged. Bogert (1940:fig. 8) illustrated the maxillary teeth of a specimen (AMNH 50590) from former French Cameroon, noting “ five specimens examined show variation from eleven to thirteen anterior subequal teeth followed after a very short diastema by two larger grooved fangs and a smaller fang, the total number of teeth being fourteen to eighteen.” Because only two of his examined specimens originated from former French Cameroon, at least three of these specimens are from Liberia, which are attributable to T. pulverulenta. Schmidt (1923:103) quoted field notes of Herbert Lang for DRC snakes as “coloration, in life, reddish brown above, head darker brown. Irregular dark gray lateral bars, wider in the middle, extend from the vertebral line to the venter, tipped above and below with black. A cream-colored central spot in the broad portion of each lateral bar. Faint narrow grayish crossbars between the wider ones, disappearing posteriorly. The wider crossbars are usually alternate, sometimes confluent on the back. Venter pinkish gray, heavily dotted with brown which forms two lines at the inner edges of the ventral edges of the ventral angle. These lines are more distinct beneath the tail.” Hellmich (1957b) described several individuals from Angola with a reddish brown to reddish blue-gray dorsum, with varying degrees of contrasting rhombic patterns and spots. Pitman (1974) provided a similar description for specimens from Uganda, noting they range from pinkish-brown to reddish-brown. Hedges (1983:21) described Kenyan specimens as, “a rather pretty pattern of coffee coloured diamond shaped markings on a mushroom pink body.” Rasmussen (1997b) described coloration in this species (presumably based on examined specimens from Nigeria and Cameroon) as reddish brown on the dorsum of the body; dorsum of the head darker brown; irregular, dark gray, diamondshaped spots on the flanks that are widest at mid-body; spots edged in black on superior and inferior edges with a cream spot in the center that sometimes fuse together in the midline; faint grayish transverse bands between spots that fade and disappear posteriorly; venter pinkish-gray, with dense brown spots that form a line just inside and parallel to the keeled ventrals, most salient on the tail. Pauwels et al. (2019b) noted a specimen from Gabon with an orange tongue in life. Spawls & Branch (2020:239) noted the dorsal color can range from pinkish to brown, redbrown or pinky gray with “darker” cross-bars that enclose a “pale” spot. The dorsum and venter are “finely dusted” with brown or black specks, whereas the venter is pale pink with “dashed dark lines” on each side of the ventrals. Contrary to Pauwels et al. (2019b), they noted the tongue is pink with a white tip. Based on our photographs of DRC snakes (e.g., Fig. 12G), the tongue is orangish red, and the forked tip is silvery white with black edging, which is consistent with the coloration of the holotype in life (EG pers. obs.). An unsexed individual from Banalia, DRC (Fig. 12F) is unique in having a golden yellow mid-dorsal stripe. Diet. Pitman (1938) mentioned a juvenile from Uganda that had a small mouse in its stomach. In Kenya, Hedges (1983) noted the species eats small chameleons, geckos, and frogs. Butler & Reid (1990) described an adult female from Nigeria that contained the remains of an Agama sp. lizard (sensu Leaché et al. 2017). Spawls & Branch (2020) listed the diet as arboreal lizards and rodents. Parasites. Pitman (1938) noted a juvenile from Uganda with numerous ticks. Behavior. Pitman (1974:128) described the species as “arboreal, nocturnal... amiable disposition,” and suggested that it might rely on camouflage to avoid predation, a sentiment also suggested by Gans (1961). Chirio & LeBreton (2007) suggested the species is shy and rarely bites. Spawls & Branch (2020) noted that when threatened, it elevates the anterior part of its body, “flickers its red tongue,” hisses, and strikes. Reproduction. Schmidt (1923) described a DRC female collected in June 1914 with an unspecified number of eggs that measured 11 x 29 mm. Butler & Reid (1990) described an adult female from Nigeria (captured 21 January 1988) that contained two developing eggs (34–35 mm long, 11 mm wide). Branch (2005) noted the species lays 2– 5 eggs. Habitat. Parker (1936) noted this species is restricted to rain forest and “its outliers.” Perret (1961) listed the species from forest in Cameroon. De Witte (1962) listed the habitats for DRC snakes as equatorial forest and gallery forest, and this classification was repeated by Thys van den Audenaerde (1965). Blackwell (1967) listed the species from forest, thickets, and gardens in Nigeria. Pitman (1974:128) described this snake as a “forest species” in Uganda, but also noted one individual from a “fowl house,” and another from an epiphytic fern (Platycerium angolense) on a forest tree. Butler & Reid (1986) listed the species only from forest in Nigeria. Lawson (1993) documented the species from forest and “farmbush” in Cameroon. Rasmussen (1997b) described the species as nocturnal and restricted to forest. Chirio & LeBreton (2007) recorded the species from forests and savanna-forest mosaic in Cameroon. Spawls & Branch (2020) included forest, woodland, and forest-savanna mosaic from sea level to about 2,000 m elevation. Among the 19 snake species recorded within the garden of a villa in Yenzi ( 2.77261° S, 10.03403° E), Gamba, Nyanga Province, southwestern Gabon (forest-savanna mosaic), inhabited by one of the authors from 2004 to 2011 (OSGP, unpubl. data), T. adamanteus sp. nov. was among the most rarely encountered species. Geographic distribution and habitat. Based on molecular data from Allen et al. (in press) and patterns of our morphometric data (Table 2), we hypothesize that this species occurs east of the Niger Delta in Nigeria, Cameroon, Equatorial Guinea, Gabon, CAR, Republic of Congo, DRC, Angola, Uganda, South Sudan, and Kenya. Ullenbruch & Böhme (2017) recently listed the species from South Sudan. Venom. Based on a specimen from Cameroon, Taub (1967) described the histological morphology of the Duvernoy’s gland. Venom composition and effects are unknown (Weinstein et al. 2011). Etymology. The specific epithet adamanteus is a Latin adjective referring to the diamond-shaped marks on the flanks and dorsum of this species.

Toxicodryas vexator sp. nov. (Table 1, Figs. 1, 8���10) We hypothesize that this new, cryptic species occurs east of the confluence of the Congo and Ubangi rivers, and it has been considered to be conspecific with Toxicodryas blandingii since it was first documented to occur east of these rivers in DRC (Boulenger 1919). The recognition of this new species is supported by molecular data (Fig. 2), several significant differences in scale counts (see Results), and less toxic venom in comparison to its sister taxon T. blandingii (see Venom). Diagnosis. A species of Toxicodryas restricted to east-central and East Africa (east of the confluence of the Congo and Ubangi rivers), defined by the following combination of characters: maximum SVL> 1 meter (vs. maximum SVL T. pulverulenta and T. adamanteus sp. nov.); DSRN 23���29 (vs. 19���21 in T. pulverulenta and 18���23 in T. adamanteus sp. nov.); DSRM 21���25 (vs. 19���21 in T. pulverulenta and 18���21 in T. adamanteus sp. nov.); cloacal plate divided or undivided (vs. usually divided in T. blandingii, and always undivided in T. pulverulenta and T. adamanteus sp. nov.); adult males glossy or velvety black with a yellow venter, and adult females light brown, gray, or yellowish-brown with light-brown or cream cross-bars on the flanks, with yellowish-brown venters (vs. both sexes brown to pink with darker cross-bars that often enclose a whitish spot, and the dorsum and venter sprinkled with fine dark brown or black spots in T. pulverulenta and T. adamanteus sp. nov.); hemipenis relatively short and massive (i.e., broad), proximal third covered with spines, distal two-thirds dimpled with a flattened apex (vs. relatively long with long spines mid-way along the shaft that decrease in size towards the apex and base, and with a domed apex in T. pulverulenta and T. adamanteus sp. nov.); venom toxicity LD 50 = 4.88 mg /kg in mice (vs. venom toxicity LD 50 = 2.85���3.55 mg /kg in mice for T. blandingii). Holotype. UTEP 22196 (field number MUSE 10341; Fig. 10), adult male collected in Mulisi, Nzovu Est, Kahuzi-Biega National Park (02.447291�� S, 28.2825378�� E, 1101 m), South Kivu Province, DRC, collected by Guillain M. Mitamba, Deo Kujirakwinja, Emmanuel Muhindo, Radar Nushili, Wandege M. Muninga, and Andrew J. Plumptre on 13 November 2015. Paratypes. UTEP 22195 (field number EBG 1362; Figs. 1B, 9C), adult female collected in the vicinity of Irangi (01.8780�� S, 28.4524�� E, 811 m), South Kivu Province, DRC, collected from a tree by a resident and brought to Maurice Luhumyo, Chifundera Kusamba, Mwenebatu M. Aristote, Wandege M. Muninga, and Eli Greenbaum on 30 August 2007; RBINS 2698 (formerly RBINS 8621) (field no. Leloup #27), adult male from Bunyakiri (2.075630�� S, 28.573194�� E, 1000 m), South Kivu Province, DRC, collected by Paul Leloup on 6 March 1958. Description of the holotype. Adult male, 1438 mm SVL; head strongly triangular and distinct from the neck, 2.1% of SVL (30.9 mm); interocular distance 21.7 mm, pupil elliptical, maximum horizontal eye diameter 7.5 mm; loreal near-rectangular, longer (3.0 mm) than high (2.4 mm), slightly tapering superiorly; body triangular; tail moderately long (32.1% of SVL). Supralabials 9/9, 4 th, 5 th, and 6 th /4 th, 5 th, and 6 th contacting orbit; infralabials 14/14, 1 st on each side in contact behind mental, 1 st ���4 th /1 st ���4 th contacting anterior chin shields, 5 th ���8 th /5 th ���8 th contacting posterior chin shields, and 1 cuneate between the 5 th and 6 th left infralabials; 2/2 preoculars; 2/2 postoculars; temporals 2 + 2/2 + 2; 2 internasals; nasal divided on both sides; frontal slightly wider (10.1 mm) than long (9.2 mm); dorsal scale rows 23 one head length posterior to jaw rictus, 21 at midbody, 15 one head length anterior to vent, smooth and oblique with apical pits visible on the neck, vertebral scales broad and apically flattened; ventrals 261 (standard), 260 (Dowling); cloacal plate undivided; paired subcaudals 136 (terminal spine missing); both hemipenes everted. Coloration (in life) of the holotype. Solid black over the entire length of the dorsum, and black ventrally except for the anterior half of the body, where the ventral scales are pale yellow with a black posterior edge that increases in thickness in correlation with increased distance from the head. The head is black dorsally and laterally except for yellow on the lower, anterior region of the 5 th ���9 th supralabials, and yellow ventrally except for thin black rims on the posterior edges of the infralabials. Coloration (in preservative) of the holotype. The specimen���s coloration in preservative is nearly the same as in life, although the ventral yellow coloration has dulled to a yellowish off-white; some scales also seem cloudy under close lighting, indicative of some stage of ecdysis in life. Variation. For years, the size record for this species was attributed to Goodman (1985), who recorded a total length of 2515 mm for an adult female collected in Uganda. However, Hedges (1983:20) measured a specimen from Kenya that was 2707 mm total length, and said it ���is reputed to exceed 3300 mm.��� Weinstein et al. (2011) noted the species may exceed 3.5 meters. Spawls & Branch (1995, 2020) listed the maximum size as ���about 2.8 m ��� (no specific location provided), but Weinstein (pers. comm.) estimated a captive specimen from Kakamega was approximately 3.0 meters total length. Schmidt (1923:104) remarked that two specimens from DRC had fused prefrontals, creating a single transverse scale. Five of his 20 DRC specimens had a divided cloacal plate, ���with indications of a groove in two others,��� and as a result, he stated that the condition of the cloacal plate is ���obviously useless��� as a diagnostic character. Laurent (1956) noted that, with the exception of DRC specimens from Mayombe (north of the Congo River in Kongo Central Province and thus attributable to T. blandingii as recognized herein) with consistently divided cloacal plates, 13 of 31 snakes from other areas of DRC had an undivided cloacal plate. Our examined specimens confirm this sentiment, because 17/ 92 specimens have a divided cloacal plate, and an additional five specimens have a partially divided cloacal plate. Hellmich (1957b) noted maximum sizes of Angolan males (1740 mm SVL; 523 mm TL) and females (1730 mm SVL; 505 mm TL), and aberrant individuals that had 11 supralabials and 9���14 infralabials. De Witte (1966) noted that the species has 17 scale rows at midbody, but this datum is so aberrant that it is likely an error (Pitman 1974; Table 1). Skinner (1973) provided ranges of scale counts (161���274 ventrals, 86���147 subcaudals) that are so aberrant that they are clearly erroneous (at least for lower counts), and noted a maximum length of about 3 meters. For Uganda snakes, Pitman (1974) listed ventral scale counts from 240���260 (males) and 240���259 (females). De Witte (1975) noted a single individual with 25 scale rows at midbody, and Broadley et al. (2003) also noted 25 scale rows as the maximum amount of variation. Based on two specimens from Lukolela, Belgian Congo (AMNH 45907) and Akenge, Belgian Congo (AMNH 12243), Bogert (1940:61) described their maxillary teeth as ���ten in number, followed after a short diastema by three enlarged, grooved fangs, the posterior one of which is smaller than the other two.��� Schmidt (1923:105) described two color phases of DRC specimens, including (1) a black phase with the anterior portion of the venter yellow, each ventral scale bordered with black on its posterior edge, the border increasing in width until the yellow color disappears on the posterior two-thirds of the venter; and (2) a brownish phase, ���with more or less distinct wide dark cross-bars, confluent anteriorly, alternate posteriorly on the vertebral line.��� Pitman (1938:211) described an unsexed individual from Uganda as ���darkish gunmetal with a purplish mottling towards the tail, belly pale yellow from head to tail but with slight brown markings on the posterior half increasing in occurrence towards and on the tail.��� A female from Uganda was described as rich chestnut dorsally and ventrally, with handsome chocolate blotches on the flanks, each one containing a small white spot. On the posterior part of the body, including most of the tail, these blotches were confluent with pale edging. The ventral aspect of the head and the first 50 ventrals were ���paly yellowish tinged green.��� The dorsum of the head was dark brown, and the posterior supralabials were dull greenish grey. The supralabials had black edging posteriorly, except for the last one. There were two elongated dark brown blotches behind the eye, which was iridescent hazel. Bogert (1940:61) provided data for a specimen (AMNH 45907; determined to be a subadult male based on photographs examined by EG) that had been described by James P. Chapin as ���olive-brown, with dark brown patches; below grayish brown.��� Hellmich (1957b) described the coloration of several individuals from Angola, including an adult male that had a blue-reddish-black dorsum with a venter that was pale yellow in the front half of the body, with an ever-widening blue-black border that eventually enclosed the entire ventral scales towards the posterior side. Another adult male had a dark black-brown dorsum, and light yellow venter on the first third of the body, but starting on the 5 th ventral, there was a dark gray-blue spot that increased in size posteriorly until it covered the entire venter towards the posterior end of the body. An adult female���s dorsum was described as clay yellow with mostly alternating dark transverse bars and a pale yellow venter. A second adult female had similar coloration to the latter specimen, but the transverse bands were only faintly visible on the posterior sixth of the body and tail. A juvenile dorsum was described as gray-brown with transverse black-brown spots that converge in the anterior part of the body, but then alternate posteriorly, with a light yellowish-white spot in the lower center of the spots. Laurent (1956:195) listed a section about possible sexual dimorphism for this species, but stated that nothing glaring appears in his data. Pitman (1974:125) described several individuals from Uganda that were similar to the descriptions above, and added that both color phases ���exhibit a handsome suede effect.��� He noted that although subadult males might retain the brown phase, black females are unknown, and the black and brown color phases have ���sexual significance.��� The dark blotches of juveniles were noted to vary from ���blackish, chocolate, reddishbrown or dark or bright chestnut,��� with interspaces ranging from light gray, pale brown or chestnut, sometimes with a pinkish tinge. Goodman (1985:56) described two adult females from Uganda as ���dingy olive-brown.��� Hughes (2000) noted that Laurent (1964) seemed to imply that his largest male specimen from Dundo, Angola was not black, but this is not clear, because the latter author only mentioned in passing that a smaller male from Andrada, Angola represented the black phase. Spawls & Branch (1995, 2020) remarked that the yellow ventral pigmentation might form a stripe in the middle of the venter. In the brown color morph, the skin between the scales is bluish gray, and especially visible when the snake inflates its body during a threat display. The eye can be yellowish or brown. The black phase snakes are usually male, whereas the brown phase ones are usually female. Based on photos of an adult male from Banalia, DRC (individual shown in Fig. 9A), the base of the tongue is bluish black, and the forked tip is silvery gray. Hemipenis. Bogert (1940:61) described the hemipenis of an individual, presumably from DRC, as ���not bifurcate, extending to the tenth caudal, the undivided sulcus deeply buried between two fleshy fold [sic]. The basal half is heavily armed with stout spines but distally the organ is calyculate, the edges of the calyces crenulated.��� Hemipenes of our examined specimens had a simple, subcylindrical shape, simple sulcus spermaticus, and spinose ornamentation with a rough apical structure, as also noted for T. blandingii. Because only two specimens with everted hemipenes were available for both T. blandingii and T. vexator sp. nov., any finer-scale differences cannot be attributed to species-level differentiation (Dowling & Savage 1960; Doucet 1963). Diet. Laurent (1964) noted a juvenile snake contained the remains of a bird. In snakes from Uganda, Pitman (1974) noted the diet included weaver finches, robber birds��� eggs, small rodents, bats, frogs, large agamids, and chameleons. Hedges (1983) described a Kenyan snake that regurgitated a Nectarinia famosa sunbird. Spawls & Branch (1995, 2020) described the diet as birds, bird eggs, arboreal lizards, frogs, arboreal rodents, and bats. Nagy et al. (2011) documented an adult female from DRC that predated a Short-palated Fruit Bat (Casinycteris argynnis) from a bat net in secondary forest. Another male specimen from DRC was captured with a nestling bushshrike (Laniarius sp.) in its stomach. Parasites. Loveridge (1937) noted a tick on the scales of a specimen (ANSP 20504) from Belgian Congo. Parasites of Ugandan snakes included internal nematodes (Kalicephalus sp.) and cestodes, ectoparasites (ticks, including Aponomma latum), and captive specimens had bacterial infections, including mouth rot (Pitman, 1974). Goodman (1985:56) documented dozens of ticks, ���probably Aponomma sp.,��� and linguatulid worms from the posterior saccular lung cavity of an adult female from Uganda. Behavior. Spawls & Branch (1995, 2020) described the snake as arboreal, sometimes climbing to heights of 30 meters in trees, but also descending to the ground to cross open spaces and roads. It is mostly nocturnal, sheltering in leaf clumps and tree hollows during the day. When threatened, it will open its mouth widely and expose the pink lining inside, inflate its body, flatten the head, lift the anterior part of its body off the ground and into C-shaped coils, and strike at perceived threats. It is adept at smelling sleeping birds in nests at night, and will make a slow, deliberate approach to attack them. Reproduction. A personal communication from ���Leakey��� (most likely Richard Leakey) to Pitman (1974) noted that a female from Kakamega (Kenya) laid 9 eggs that were approximately 20 x 40 mm on 9 January. Spawls & Branch (1995) reported an average of 7��� 14 eggs in this species (3���14 in Spawls & Branch 2020), presumably based mostly on East African data, which is substantially more than clutch sizes reported for T. blandingii by Luiselli et al. (1998a). Habitat. Laurent (1954) remarked that an adult female from Dundo, Angola was captured after it fell out of a mango tree. Laurent (1960) stated that his colleague M. Leloup often encountered the species in eastern DRC. De Witte (1962) listed the habitats for DRC snakes as equatorial forest and gallery forest, a classification that was repeated by Thys van den Audenaerde (1965). Pitman (1974) also limited the species to forest in Uganda, but he remarked that the species frequently enters houses (where it hunts for bats), and one individual was killed in a tree over 20 meters above the ground. Broadley & Cotterill (2004) stated the species inhabits forests and wooded savannas. Spawls & Branch (1995, 2020) noted the species from forest, woodland, forest-savanna mosaic, riverine woodland, and human habitations from sea level to about 2,200 m elevation. The holotype was found basking on a shrub (ca. 4 meters above ground) in a clearing created by a fallen tree in primary forest. The Irangi paratype was found in secondary forest near a road. Geographic distribution. Based on molecular data from Allen et al. (in press) and patterns of our morphometric data (Table 1), we hypothesize that this species occurs east of the Congo and Ubangi Rivers in CAR, DRC, Angola, Zambia, South Sudan, Uganda, Kenya, and Tanzania. Although Boulenger (1896) listed a specimen from ��� Zanzibar,��� the locality likely referred to mainland records (Parker et al. 1940; Loveridge 1957; Pitman 1974). Venom. Wakeman (1966) documented a 2.59 m (presumably total length) captive adult from Uganda that struck an adult rat, which died after 8.5 minutes. Pitman (1974:127) described the case of a young European who was bitten on the thumb three times in rapid succession by a small (305 mm) individual (erroneously reported as 350 mm by Goodman 1985); only ���initial smarting��� at the puncture sites occurred. Spawls (1979) described the bite of a captive 2.1 meter snake on a man, including three fang punctures on his thumb, which resulted in mild swelling of his hand. Anecdotal observations of a bite by a captive snake on a mouse resulted in death in under a minute. Hedges (1983:20) was bitten, ���and although it drew a considerable amount of blood, I felt no effects whatsoever.��� He also remarked that this species ���chews��� when biting, ostensibly to ensure the rear fangs penetrate the flesh to inject venom. Based on venom collected from a snake originating from Kenya, Weinstein & Smith (1993) estimated the LD 50 value as 4.88 mg /kg in mice. Weinstein & Smith (1993:88) also noted ���the differences in lethal potencies between the two samples of B. blandingi [compare with LD 50 = 2.85���3.55 mg /kg in T. blandingii from West Africa] demonstrate variation of secretion toxicity in this species,��� suggesting possible species-level differences in venom composition of these sister taxa (Weinstein & Kardong 1994). Immunological cross reactivity with elapid venom antisera was demonstrated, but Weinstein & Smith (1993) did not distinguish between samples originating from West Africa (i.e., T. blandingii) or East Africa (i.e., T. vexator sp. nov.). Branch (2005) suggested bites cause nausea and headaches, but fatalities are unknown. Dashevsky et al. (2018) included a Toxicodryas from Tanzania in their proteomics study, and they noted its venom is dominated by three-finger toxins. Scott Weinstein (pers. comm., October 2020) clarified that a snakebite mentioned by Weinstein & Smith (1993) and a second one that occurred one year after this publication were caused by snakes originating from Kakamega forest, Kenya. ���The bite mentioned in the paper was delivered by [an approximately] 3.0 m jet black male that was a favourite member of my collection for nearly 7 years. He typically performed the whole gamut of open mouthed posturing and mock strikes, but was also a very aggressive feeder, and although I tried to condition him to receiving food (freeze-thawed chicks and rodents) out of his enclosure, he still occasionally would ���pour��� ou, Published as part of Greenbaum, Eli, Allen, Kaitlin E., Vaughan, Eugene R., Pauwels, Olivier S. G., Wallach, Van, Kusamba, Chifundera, Muninga, Wandege M., Aris- Tote, Mwenebatu M., Mali, Franck M. M., Badjedjea, Gabriel, Penner, Johannes, R��del, Mark-Oliver, Rivera, Jacqueline, Sterkhova, Viktoria, Johnson, Grant, Tapondjou, Walter P. & Brown, Rafe M., 2021, Night stalkers from above: A monograph of Toxicodryas tree snakes (Squamata Colubridae) with descriptions of two new cryptic species from Central Africa, pp. 1-44 in Zootaxa 4965 (1) on pages 17-21, DOI: 10.11646/zootaxa.4965.1.1, http://zenodo.org/record/4723024, {"references":["Boulenger, G. A. (1919) Batraciens et reptiles recueillis par le Dr C. Christy au Congo Belge dans le districts de Stanleyville, Haut-Uele et Ituri en 1912 - 1914. Revue Zoologique Africaine, 7, 1 - 29. https: // doi. org / 10.5962 / bhl. part. 15108","Goodman, J. D. (1985) Two record size Blanding's tree snakes from Uganda. East African Natural History Society Bulletin, 1985, 56 - 57.","Hedges, N. G. (1983) Reptiles and Amphibians of East Africa. Kenya Literature Bureau, Nairobi, Kenya, xii + 139 pp.","Weinstein, S. A., Warrell, D. 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