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Cladotanytarsus Kieffer, 1921 Cladotanytarsus (Cladotanytarsus) mancus (Walker, 1856): Gala Lake (Edirne) (Çamur-Elipek et al. 2010), Tunca River (Çamur-Elipek et al. 2006), Meriç River (Özkan & Elipek 2006), Thrace region (Özkan 2006a), Eastern and Southeastern Anatolia regions streams and lakes (Şahin 1984), Marmara, Aegean, Sakarya river systems (Şahin 1987c), Hazar Lake (Elazığ) (Aydın 2022), Kırklareli province (Aydın & Güher 2017), Edirne region (Özkan & Kırgız 1995), Elazığ province (Şahin 1980), Lake District (Taşdemir & Ustaoğlu 2005), Denizli (Taşdemir & Ustaoğlu 2016), Hazar Lake (Tellioğlu et al. 2008), Meriç River (Özkan & Elipek 2006), Çanakkale region (Özkan 2007), Kapıdağ Peninsula (Özkan 2012b), Cip Dam Lake, Elazığ (Akıl et al. 1996), Musaözü Dam Lake (Eskişehir) (Arslan et al. 2007), Gölbaşı (Hatay) (Arslan et al. 2013), Büyük Çay Pelte, Elazığ (Kara & Tellioğlu 2009), Thrace region (Özkan 2010a), Marmara Island (Özkan 2010b), Sazlıdere stream (Edirne) (Özkan & Çamur-Elipek 2007)., Published as part of Tasdemir, Ayse & Akyildiz, Gurcay Kivanc, 2023, Checklist of the Family Chironomidae (Order: Diptera) from Turkey, pp. 301-338 in Zootaxa 5318 (3) on page 330, DOI: 10.11646/zootaxa.5318.3.1, http://zenodo.org/record/8166805, {"references":["Camur-Elipek, B., Arslan, N., Kirgiz, T., Oterler, B., Guher, H. & Ozkan, N. (2010) Analysis of benthic macroinvertebrates in relation to environmental variables of Lake Gala, a National Park of Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 10, 235 - 243. https: // doi. org / 10.4194 / trjfas. 2010.0212","Camur-Elipek, B., Arslan, N., Kirgiz, T. & Oterler, B. (2006) Benthic macrofauna in Tunca river (Turkey) and their relationship with environmental variables. Acta Hydrochimica et Hydrobiologica, 34, 360 - 366. https: // doi. org / 10.1002 / aheh. 200500631","Ozkan, N. & Elipek, B. (2006) The dynamics of Chironomidae larvae (Diptera) and the water quality in Meric River (Edirne / Turkey). Tiscia, 35, 49 - 54.","Ozkan, N. (2006 a) Fauna of Chironomid (Chironomidae; Diptera) in Turkish Thrace region (Kirklareli, Tekirdag, Istanbul and Canakkale). Journal of Fisheries and Aguatic Sciences, 23, (1 - 2), 125 - 132.","Sahin, Y. (1984) Diagnosis and Distribution of Chironomidae (Diptera) Larvae in Rivers and Lakes of Eastern and Southeastern Anatolia regions. 57 (2). Anadolu University Press, Eskisehir, 145 pp.","Sahin, Y. (1987 c) Chironomidae (Diptera) Larvae of Marmara, Ege and Sakarya System's Rivers and their Distributions. Doga. Turkish Journal of Zoology, 11 (3), 179 - 188. [in Turkish]","Aydin, G. B. (2022) Contributions to the faunistic knowledge of Chironomidae (Diptera) of Turkey based on the adult males collected around Hazar Lake (Elazig). Journal Entomological Research Society, 24 (3), 375 - 387. https: // doi. org / 10.51963 / jers. v 24 i 3.2295","Aydin, G. B. & Guher, H. (2017) Chironomidae (Diptera) Fauna of Kirklareli province. Turkish Journal of Zoology, 41 (2). [published online] https: // doi. org / 10.3906 / zoo- 1604 - 10","Ozkan, N. & Kirgiz, T. (1995) Edirne Bolgesi Chironomidae (Diptera) Larvalari ve Yayilislari. Turkish Journal of Zoology, 19, 51 - 58. [in Turkish]","Sahin, Y. (1980) Determination and Taxonomical observations of Elazig and partly neighboring cities Chironomidae (Diptera) Larvae. Journal of Firat University Veterinary Faculty, 5, 1. [in Turkish]","Tasdemir, A. & Ustaoglu, M. R. (2005) Taxonomical investigation of lake district inland waters Chironomidae and Chaoboridae (Diptera) fauna (in Turkish with English abstract). Ege Journal of Fisheries & Aquatic Sciences, 22 (3 - 4), 377 - 384.","Tasdemir, A. & Ustaoglu, M. R. (2016) Observations on the Chironomidae and Chaoboridae (Diptera) fauna of the mountain lakes in Denizli (Turkey). Ege Journal of Fisheries & Aquatic Sciences, 33 (3), 279 - 284. https: // doi. org / 10.12714 / egejfas. 2016.33.3.13","Tellioglu, A., Citil, C. & Sahin, I. (2008) Distribution of Chironomidae (Diptera) larvae in Hazar Lake, Turkey. Journal of Applied Biological Sciences, 2 (1), 77 - 80.","Ozkan, N. (2012 b) A preliminary study aimed the determination of larval Chironomidae (Diptera) species in Kapidag Peninsula. Ege Journal of Fisheries & Aquatic Sciences, 28 (2), 35 - 40.","Akil, A., Ayvaz, Y. & Sen, D. (1996) Chironomidae (Diptera) Larvae in Cip Dam Lake (Elazig). Turkish Journal of Zoology, 20, 217 - 220. https: // doi. org / 10.55730 / 1300 - 0179.3010","Arslan, N., Ilhan, S., Sahin, Y., Filik, C., Yilmaz, V. & Onturk, T. (2007) Diversity of invertebrate fauna in littoral of shallow Musaozu Dam Lake in comparison with environmental parameters. The Journal of Applied Biological Sciences, 1 (3), 67 - 75.","Arslan, N., Kara, D. & Odabasi, D. A. (2013) Twelve new records (Clitellata, Chironomidae and Gastropoda) from Lake Golbasi (Hatay-Turkey). Turkish Journal of Fisheries and Aquatic Sciences, 13, 869 - 873. https: // doi. org / 10.4194 / 1303 - 2712 - v 13 _ 5 _ 11","Kara, T. & Tellioglu, A. (2009) Buyuk Cay (Pelte, Elazig) ' da Bulunan Chironomidae Larvalarinin Taksonomik Yonden Incelenmesi. Firat University, Journal of Engineering Science, 21 (2), 117 - 121. [in Turkish]","Ozkan, N. (2010 a) Chironomidae (Diptera) Larvae from the Thrace region of Turkey. Trakya Universtiy Journal of Science, 11, 7 - 13.","Ozkan, N. (2010 b) The Detection of Larval Chironomidae (Diptera) Fauna in Marmara Island and Their Distribution. Ege Journal of Fisheries & Aquatic Sciences, 27 (2), 47 - 53. [in Turkish]","Ozkan, N. & Camur-Elipek, B. (2007) Relationships between chironomid communities (Diptera: Chironomidae) and environmental parameters in Sazlidere stream (Turkish Thrace). Tiscia, 36, 29 - 34."]}

Cladotanytarsus (Cladotanytarsus) sinjongensis Ree et Kim, 1988 Cladotanytarsus sinjongensis Ree et Kim, 1988: 19 (male, fig. 4a–c; South Korea). (Fig. 2A–D) Material examined. Phjŏngjang, 18 July 1981, 32 males; Sokam, 8 July 1981, 1 male; leg. W. Krzemiński. Remarks. A set of subtle morphological differences used in diagnostics, often overlapped by intraspecific variations, make the determination of adult males of Cladotanytarsus one of the most difficult within Tanytarsini and Chironomidae. Accurately mounted and illustrated specimens, their precise measurements and appropriate interpretation of diagnostic features are thus decisive. In fact, determination of Cladotanytarsus sinjongensis may be a challenge when based on the illustrated original description, although several crucial characters indicate that the specimens presently examined are conspecific with those described from South Korea (Ree & Kim 1988). The males from North and South Korea compared here [data on the South Korean material, with remarks given in square brackets] are approximately of the same size, with the wing 1.18–1.45 mm long [1.2–1.3 mm], AR 0.90–1.03 [0.91–1.05], frontal tubercles 14–18 μm long [15–16 μm], similar lengths of palpomeres, leg ratios and the same body colouration. The hypopygial anal point is more or less lanceolate or tongue-shaped (Fig. 2A, B), 35–45 μm long [7–9 μm, inconsistency relative to the scaled fig. 4], the superior volsella is slender, narrowed at mid length, with the swollen and apically rounded distal part (Fig. 2A, C) [probably distorted during mounting], the stem of the median volsella is slightly curved, ~40 μm long [35–38 μm], with branched lamellae (Fig. 2A, D), as in all known Cladotanytarsus [the deep furcations overlooked]., Published as part of Giłka, Wojciech & Gadawski, Piotr, 2022, Tanytarsini (Diptera: Chironomidae) collected during Polish expeditions to North Korea, pp. 151-175 in Zootaxa 5214 (2) on page 152, DOI: 10.11646/zootaxa.5214.2.1, http://zenodo.org/record/7384985, {"references":["Ree, H. & Kim, M. (1988) Studies on Korean Chironomidae (Diptera) III. Description of two unrecorded species from Korea and three new species. The Korean Journal of Systematic Zoology, Special Issue 2, 13 - 24. [https: // koreascience. kr / article / JAKO 198811920826501. page]"]}

Genus: Cladotanytarsus Kieffer, 1921 The genus Cladotanytarsus is divided into two subgenera: Cladotanytarsus s. str. Kieffer, 1921 and Lenziella Kieffer, 1922 (Giłka 2011b, Giłka & Spies 2012, Puchalski & Giłka 2017). Since no character typical of Lenziella (a globular basal swelling in the inferior volsella nor lobes of the mid and hind leg tibiae apices) has been found in C. sinjongensis males, we place the species in the subgenus Cladotanytarsus s. str. The genus is represented by nearly 80 species known from all continents except Antarctica (Puchalski et al. 2018). From North Korea, apart from C. sinjongensis, now found and redescribed below, two Cladotanytarsus species have so far been recorded by Reiss (1980), but determined to the genus level, as Cladotanytarsus sp. K 1 and K2., Published as part of Giłka, Wojciech & Gadawski, Piotr, 2022, Tanytarsini (Diptera: Chironomidae) collected during Polish expeditions to North Korea, pp. 151-175 in Zootaxa 5214 (2) on page 152, DOI: 10.11646/zootaxa.5214.2.1, http://zenodo.org/record/7384985, {"references":["Gilka, W. (2011 b) Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini). Zootaxa, 3100 (1), 1 - 34. https: // doi. org / 10.11646 / zootaxa. 3100.1.1","Gilka, W. & Spies, M. (2012) Neotype designation for Cladotanytarsus (Lenziella) bicornutus (Kieffer), and first description of the distinctive female (Diptera: Chironomidae: Tanytarsini). Zootaxa, 3545 (1), 83 - 88. https: // doi. org / 10.11646 / zootaxa. 3545.1.6","Puchalski, M. & Gilka, W. (2017) Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA. Zootaxa, 4242 (2), 344 - 358. https: // doi. org / 10.11646 / zootaxa. 4242.2.7","Puchalski, M., Paasivirta, L. & Gilka, W. (2018) Cladotanytarsus saetheri sp. nov. and C. gedanicus Gilka: Holarctic sibling species (Diptera: Chironomidae). Zootaxa, 4394 (3). 428 - 436. https: // doi. org / 10.11646 / zootaxa. 4394.3.8","Reiss, F. (1980) Zur Zoogeographie der Chironomidenfauna (Diptera, Insecta) Nordkoreas. In: Murray, D. A. (Ed.), Chironomidae. Ecology, systematics, cytology and physiology. Proceedings of the Seventh International Symposium on Chironomidae, Dublin, August 1979. Pergamon Press, Oxford and New York, New York, pp. 145 - 149. https: // doi. org / 10.1016 / B 978 - 0 - 08 - 025889 - 8.50027 - 1"]}

Cladotanytarsus (Cladotanytarsus) crassus sp. n. is described from the USA (Oregon, Wyoming) and Canada (Ontario). The distinctive structure of the adult male hypopygium, bearing a thickset digitus and a stout elongated superior volsella, is presented. Intraspecific morphological variations are described in order to compare C. crassus and C. nigrovittatus (Goetghebuer, 1922), treated as close relatives. The geographical distribution and ecology of the two species are commented on.

Cladotanytarsus (Cladotanytarsus) saetheri, sp. nov. Figs 1A, B; 2; 3A–E; 4A; 5A–D Type material. Holotype, adult male: NORWAY, FINNMARK: Helsegård near Karasjok (69°26'13"N / 25°41'01"E), 3 August 2003, swarms near river, sweep net, W. Giłka. Paratypes. 47 males as holotype; FINLAND, OSTROBOTHNIA KAJANENSIS: Oulujärvi-Paltaniemi, 12 June 2017, netting water surface, 3 males, L. Paasivirta; RUSSIA, FAR EAST: Amur obl., Sigikta River below bridge of the road Neryungri–Never, 3 August 2006, 1 male, T.M. Tiunova; Magadan obl., Taui River, 26 July 2002, 1 male, E. Khamenkova; Primorsky Krai, Ussuri River near bridge of the highway Vladivostok – Khabarovsk, 4 August 2003, 1 male, O.V. Orel. CANADA, MANITOBA: Lake Winnipeg: Beaver Creek, 8 June 1971, emergence trap, 2 males, 24 June 1971, emergence trap, 1 male, 22 July 1971, emergence trap, 1 male, 28 July 1971, emergence trap, 1 male, 29 July 1971, emergence trap, 1 male, E. Johnson, M.P. McLean et al.; Gull Harbour, 16 July 1969, light trap, 1 male, P.S.S. Chang; McCreary Island, 25 July 1969, light trap, 1 male, P.S.S. Chang; Victoria Beach, 9 July 1969, light trap, 2 males, P.S.S. Chang (prep. O.A. Saether); USA, COLORADO: Larimer Co., Cache La Poudre River, 15 km NW of Laporte, 26 August 1968, 1 male, F.G. Andrews; Pueblo Co., Arkansas River / Pueblo Reservoir at: Hobson Ranch, 19 September 1985, 2 males, Pueblo Boulevard Bridge, 15 August 1985, 1 male, Stilling Basin Bridge, 15 August 1985, 2 males, S.J. Herrmann; MICHIGAN: Newaygo Co., White River near Ramona, 21 May 1982, 2 males, P.C. Baumann & M. Clavla; SOUTH CAROLINA: Pickens Co., Clemson, Wildcat Creek, 31 March 1976, 1 male, P. Hudson; WISCONSIN: Burnett Co., 20 km E & 7 km S of Siren, 6 August 1966, 2 male hypopygia, D.C. Hansen. Derivatio nominis. The specific name is a patronym commemorating the Chironomidae taxonomist and ecologist, Ole Anton Saether (1936–2013). Diagnosis. Acrostichal setae sparse, placed on top of scutum. Wing vein M3+4 ending only slightly proximally of R4+5 or under R4+5. Phallapodeme strongly curved in anterior section. Anal point stocky, with large spinulae densely arranged between prominent crests. Superior volsella with well-developed apical lip and small field of microtrichia confined to dorsolateral surface at base; digitus evenly tapering toward blunt tip. Stem of median volsella strongly elongated, straight or slightly and evenly curved at most, bearing furcate lamellae on apex. Inferior volsella with dorsal lobe forming a nose. Description. Adult male (n = 73 specimens + 2 male hypopygia). Colouration (in alcohol). Eyes black. Antenna, tentorium, scutal stripes, scutellum, postnotum and sternum brown to dark brown. Head capsule, mouthparts, ground colour of thorax, legs and abdomen including hypopygium brown or light brown with greenish undertone. Wing and haltere pale brownish. Head. Eyes reniform, broadly separated by frons. Antenna with 13 distinct flagellomeres; plume fullydeveloped or weak, AR 0.69–0.92 (0.80, n = 18) in specimens with plume fully-developed or AR 0.54–0.67 (0.60, n = 3) in specimens with plume reduced. Frontal tubercles minute, usually in a form of tiny swellings, rarely conical, 8 µm long at most. Lengths of palpomeres 2–5 (in µm) in specimens with antennal plume fully-developed (n = 21): 32–44 (36), 72–100 (88), 79–120 (94), 123–172 (144); palps shorter in specimens with plume reduced (n = 3): 32–40 (36), 66–92 (77), 76–100 (88), 112; pm4> pm3 (n = 21) or pm4 ≤ pm3 (n = 3). Clypeus with 7–14 setae. Thorax chaetotaxy. Ac 2–6 placed on top of scutum; Dc 5–9 on each side; Pa 1–2 exceptionally 3 on each side (n = 1); Scts 2–4, rarely 6 (n = 2). Wing (Fig. 1A, B). Length 1195–1590 (1405) µm. Venation pattern and chaetotaxy slightly variable (also in specimens of the same sample). Veins ending as follows (in order from base to tip): R1, Cu1 (or Cu1 ending under R1), M2+3, M3+4, R4+5 (or M3+4 ending under R4+5), M1+2; VR Cu 1.22–1.43 (1.31). Macrotrichia on C, R, distal half of M1+2, rarely on R1, distal part of R4+5 and distal half of false vein above M3+4, other veins bare; membrane with macrotrichia on r4+5, sometimes in m1+2, exceptionally a couple of macrotrichia in m3+4 (n = 1), other cells bare. Legs. Fore leg tibia with slightly curved spur 15–24 (20) µm long. Combs of mid and hind leg tibiae separated, ca. twice shorter than spurs; spurs of mid and hind leg unequal in shape (one shorter and straight, second longer and curved) and length: 12–24 µm long on mid leg and 20–36 µm long on hind leg. Basitarsus of mid leg with 2–3 sensilla chaetica. Lengths of leg segments and leg ratios distinctly different in specimens with fully-developed and reduced antennal plume, as shown in Table 1. fe ti ta1 ta2 ta3 ta4 ta5 LR p1 465 – 660 265 – 385 550 – 735 295 – 385 220 – 310 150 – 220 85 – 110 1.81 – 2.30 (575) (325) (640) (345) (270) (185) (100) (1.98) 570 – 745 385 – 450 570 – 600 285 195 – 235 145 – 150 105 – 115 1.43 – 1.49 (645) (420) p2 545 – 690 435 – 565 220 – 330 135 – 195 100 – 180 65 – 115 55 – 85 0.50 – 0.62 (600) (500) (265) (155) (115) (80) (65) (0.53) 610 – 640 495 – 510 250 135 115 85 85 0.49 p3 550 – 780 525 – 765 355 – 460 235 – 295 205 – 240 130 – 165 85 – 105 0.56 – 0.65 (675) (660) (405) (260) (225) (150) (95) (0.61) 675-690 645 – 675 330 205 190 120 90 0.49 Hypopygium (Figs 2; 3A–E; 4A; 5A–D). Gonostylus shorter than gonocoxite, 70–100 (80) µm long, rarely longer, up to 120 µm (n = 3, Finnish specimens). Phallapodeme strongly curved in anterior section. Anal tergite with bands of V-type separated, bearing 1 lateral seta on each side and 3–15 (8) median setae arranged irregularly at base of anal point (Figs 2A). Anal point stocky, broad at base, tongue-shaped or lanceolate, tapering toward blunt tip or with short nipple-like apical elongation, bearing 6–13 relatively large spinulae (exceptionally 3 spinulae present, n = 1) densely arranged between prominent crests (Figs 2A, 3A–E). Superior volsella rounded at base, narrowed at mid length, usually slightly swollen distally, with well-developed apical lip, 4–11 (usually 6–7) dorsal setae and small field of microtrichia confined to dorsolateral surface at base; digitus protruding slightly beyond apex of superior volsella, evenly tapering toward blunt tip (Figs 2A, 4A). Stem of median volsella strongly elongated, 40–60 (55) µm long, straight or slightly and evenly curved at most, bearing several setiform and 5–7 rarely 8 furcate lamellae on apex (Figs 2A, B, 5A–D). Inferior volsella with slight knee-like extension at base and distinct dorsal lobe forming a nose at mid length of inferior volsella (Figs 2A, 4A). Remarks. Our studies on Cladotanytarsus, by now carried out independently as based on materials from North America (M.P., W.G.) and Fennoscandia (L.P., W.G.) indicated that the same unknown species may occur in both the regions studied. Further materials from the Russian Far East confirmed its wide Holarctic distribution. As a result, Cladotanytarsus saetheri is described and compared with its relative, C. gedanicus. These two species were previously misidentified (Giłka 2009) due to morphological similarities in the hypopygial structure, i.a. peculiar shape of the median volsellae consisted of a long stem bearing dense furcate lamellae on apex (cf. Giłka 2001: fig. 2). A detailed character analysis indicated several distinct differences between C. saetheri and C. gedanicus, as shown in Figures 1 & 3–5 and Table 2. Though the weakly plumose and abbreviated antennae, shortened palps and changed proportions of legs segments in several examined males of Cladotanytarsus saetheri may disrupt the species definition, these characters were found as a result of a limited flying ability in specimens collected from the water surface (material from Finland). Thus, they are treated separately in the above description; nevertheless, all the presently examined individuals are defined as conspecific. Interestingly, the Finnish specimens were not sampled by simultaneous netting from the air and vegetation. So, it is probable, that they were copulating on the water surface. Such nontypical mode of life may have a diverse background, being e.g. an adaptation to austere conditions, which in a longterm period may lead to behavioural and spatial isolation (e.g. Serra-Tosio 1974, Hermann et al. 1987, Giłka & Paasivirta 2009, Giłka et al. 2013). This phenomenon usually results in parallel morphological modifications of the wings, antennae, palps and legs, in some cases called as atrophied aberrant characters, and may occur in different Chironomidae groups, including the Tanytarsini (e.g. Saether 1971, Cranston 1980, Giłka 2011b). Some peculiar leg structures/characters in Tanytarsini, however, are recogniZed as distinct apomorphies (Giłka 2011b; ZakrZewska et al., in press). Cladotanytarsus saetheri seems to prefer large, slow flowing rivers and the open shores of large oligotrophic lakes., Published as part of Puchalski, Mateusz, Paasivirta, Lauri & Giłka, Wojciech, 2018, Cladotanytarsus saetheri sp. nov. and C. gedanicus Giłka: Holarctic sibling species (Diptera: Chironomidae), pp. 428-436 in Zootaxa 4394 (3) on pages 429-433, DOI: 10.11646/zootaxa.4394.3.8, http://zenodo.org/record/1199834, {"references":["Gilka, W. (2001) A reView Of POliSh Cladotanytarsus Kieffer (Diptera: ChirOnOmidae) with deScriptiOn Of three new SpecieS. Polish Journal of Entomology, 70, 307 - 328.","Gilka, W. & PaaSiVirta, L. (2009) EValuatiOn Of diagnOStic characterS Of the Tanytarsus chinyensis grOup (Diptera: ChirOnOmidae), with deScriptiOn Of a new SpecieS frOm Lapland. Zootaxa, 2197, 31 - 42.","Gilka, W., SOSzyNSka-Maj, A. & PaaSiVirta, L. (2013) The peculiar winter-actiVe midge, Diamesa starmachi (Diptera: ChirOnOmidae). Polish Journal of Entomology, 82, 201 - 211.","Gilka, W. (2011 b) Six unuSual Cladotanytarsus Kieffer: tOwardS a SyStematicS Of the genuS and reSurrectiOn Of Lenziella Kieffer (Diptera: ChirOnOmidae: TanytarSini). Zootaxa, 3100, 1 - 34."]}

Cladotanytarsus (Cladotanytarsus) gedanicus Giłka, 2001 Figs 1C, D; 3F–J; 4B; 5E–H Material examined. Holotype and paratypes (see Giłka 2001). EUROPE. FINLAND, LAPLAND: Čuonjáčohkka, small reservoir by roadside (Kittiläntie) 45 km SW of Inari (68°39'52"N / 26°18'35"E, 242 m a.s.l.), 6 August 2003, netting, 3 males, W. Giłka; Lemmenjoki-Njurgalahti (68°45'31"N / 26°14'03"E, 175 m a.s.l.), 20 July 2002, netting, 3 males, W. Giłka; Tuurujärvi near Kaamanen (69°09'30"N / 27°13'08"E, 142 m a.s.l.), 26 July 2003, netting, 2 males, W. Giłka; NORTHERN OSTROBOTHNIA: Olhava near Oulu, Gulf of Bothnia (65°27' 48"N / 25°22'21"E, 5 m a.s.l.), 13 July 2002, netting, 3 males, W. Giłka. Several sites on the coast of Bothnian Bay and Bothnian Sea in the beginning of June and in late July and early August 1968 –2012, L. Paasivirta (see also Paasivirta 2012). POLAND, SWEDEN: see Giłka 2009. NORTH AMERICA. CANADA, MANITOBA: Portage Creek, 20 September 1967, 1 male, W.M. Hominick; NUNAVUT: Chesterfield, 26 August 1950, 1 male, J.R. Vockeroth. USA, COLORADO: Pueblo Co., University of Southern Colorado campus, 25 September 1981, light trap, 1 male, J. Linam; NEW MEXICO: Mora Co., Charette Lake, 6 September 1974, Malaise trap, 42 males, M. Beard; San Juan Co., Morgan Lake, 1 July 1963, 1 male, L.A. McElfresh; San Miguel Co., Storrie Lake, 2 July 1970, light trap, 3 males, G. Harrell. Remarks. Cladotanytarsus gedanicus is now for the first time recorded from the Nearctic region, although its wide range in the Holarctic was previously indicated (Giłka 2011a). This species is distributed across North America, from Nunavut and Manitoba in the north through Colorado to New Mexico in the south. It has so far been reported from Europe (Poland, Finland, Sweden) and the Russian Far East (Makarchenko et al. 2005, Yavorskaya et al. 2017); however, the records from Asia require confirmation. The data on C. gedanicus from Norway by Giłka (2009) pertain to C. saetheri. For ecology and seasonal dynamics of C. gedanicus in Poland see Giłka (2001, 2002, 2009)., Published as part of Puchalski, Mateusz, Paasivirta, Lauri & Giłka, Wojciech, 2018, Cladotanytarsus saetheri sp. nov. and C. gedanicus Giłka: Holarctic sibling species (Diptera: Chironomidae), pp. 428-436 in Zootaxa 4394 (3) on page 433, DOI: 10.11646/zootaxa.4394.3.8, http://zenodo.org/record/1199834, {"references":["Gilka, W. (2001) A reView Of POliSh Cladotanytarsus Kieffer (Diptera: ChirOnOmidae) with deScriptiOn Of three new SpecieS. Polish Journal of Entomology, 70, 307 - 328.","Gilka, W. (2011 a) Ochotkowate-Chironomidae, plemie: Tanytarsini, postaci dorosle, samce. Klucze do oznaczania owadow Polski. [Non-biting midges-Chironomidae, tribe Tanytarsini, adult males. Keys for the Identification of Polish Insects]. No 177. Part XXVIII, Muchowki - Diptera. Issue 14 b. POlSkie TOwarzyStwO EntOmOlOgiczne, BiOlOgica SileSiae, WrOclaw, 95 pp. [in POliSh]","Gilka, W. (2002) TanytarSini (Diptera: ChirOnOmidae) Of POland - a fauniStic reView. Polish Journal of Entomology, 71, 415 - 428."]}

Cladotanytarsus (Cladotanytarsus) saetheri, sp. nov. Figs 1A, B; 2; 3A–E; 4A; 5A–D Type material. Holotype, adult male: NORWAY, FINNMARK: Helsegård near Karasjok (69°26'13"N / 25°41'01"E), 3 August 2003, swarms near river, sweep net, W. Giłka. Paratypes. 47 males as holotype; FINLAND, OSTROBOTHNIA KAJANENSIS: Oulujärvi-Paltaniemi, 12 June 2017, netting water surface, 3 males, L. Paasivirta; RUSSIA, FAR EAST: Amur obl., Sigikta River below bridge of the road Neryungri–Never, 3 August 2006, 1 male, T.M. Tiunova; Magadan obl., Taui River, 26 July 2002, 1 male, E. Khamenkova; Primorsky Krai, Ussuri River near bridge of the highway Vladivostok – Khabarovsk, 4 August 2003, 1 male, O.V. Orel. CANADA, MANITOBA: Lake Winnipeg: Beaver Creek, 8 June 1971, emergence trap, 2 males, 24 June 1971, emergence trap, 1 male, 22 July 1971, emergence trap, 1 male, 28 July 1971, emergence trap, 1 male, 29 July 1971, emergence trap, 1 male, E. Johnson, M.P. McLean et al.; Gull Harbour, 16 July 1969, light trap, 1 male, P.S.S. Chang; McCreary Island, 25 July 1969, light trap, 1 male, P.S.S. Chang; Victoria Beach, 9 July 1969, light trap, 2 males, P.S.S. Chang (prep. O.A. Saether); USA, COLORADO: Larimer Co., Cache La Poudre River, 15 km NW of Laporte, 26 August 1968, 1 male, F.G. Andrews; Pueblo Co., Arkansas River / Pueblo Reservoir at: Hobson Ranch, 19 September 1985, 2 males, Pueblo Boulevard Bridge, 15 August 1985, 1 male, Stilling Basin Bridge, 15 August 1985, 2 males, S.J. Herrmann; MICHIGAN: Newaygo Co., White River near Ramona, 21 May 1982, 2 males, P.C. Baumann & M. Clavla; SOUTH CAROLINA: Pickens Co., Clemson, Wildcat Creek, 31 March 1976, 1 male, P. Hudson; WISCONSIN: Burnett Co., 20 km E & 7 km S of Siren, 6 August 1966, 2 male hypopygia, D.C. Hansen. Derivatio nominis. The specific name is a patronym commemorating the Chironomidae taxonomist and ecologist, Ole Anton Saether (1936–2013). Diagnosis. Acrostichal setae sparse, placed on top of scutum. Wing vein M3+4 ending only slightly proximally of R4+5 or under R4+5. Phallapodeme strongly curved in anterior section. Anal point stocky, with large spinulae densely arranged between prominent crests. Superior volsella with well-developed apical lip and small field of microtrichia confined to dorsolateral surface at base; digitus evenly tapering toward blunt tip. Stem of median volsella strongly elongated, straight or slightly and evenly curved at most, bearing furcate lamellae on apex. Inferior volsella with dorsal lobe forming a nose. Description. Adult male (n = 73 specimens + 2 male hypopygia). Colouration (in alcohol). Eyes black. Antenna, tentorium, scutal stripes, scutellum, postnotum and sternum brown to dark brown. Head capsule, mouthparts, ground colour of thorax, legs and abdomen including hypopygium brown or light brown with greenish undertone. Wing and haltere pale brownish. Head. Eyes reniform, broadly separated by frons. Antenna with 13 distinct flagellomeres; plume fullydeveloped or weak, AR 0.69–0.92 (0.80, n = 18) in specimens with plume fully-developed or AR 0.54–0.67 (0.60, n = 3) in specimens with plume reduced. Frontal tubercles minute, usually in a form of tiny swellings, rarely conical, 8 µm long at most. Lengths of palpomeres 2–5 (in µm) in specimens with antennal plume fully-developed (n = 21): 32–44 (36), 72–100 (88), 79–120 (94), 123–172 (144); palps shorter in specimens with plume reduced (n = 3): 32–40 (36), 66–92 (77), 76–100 (88), 112; pm4> pm3 (n = 21) or pm4 ≤ pm3 (n = 3). Clypeus with 7–14 setae. Thorax chaetotaxy. Ac 2–6 placed on top of scutum; Dc 5–9 on each side; Pa 1–2 exceptionally 3 on each side (n = 1); Scts 2–4, rarely 6 (n = 2). Wing (Fig. 1A, B). Length 1195–1590 (1405) µm. Venation pattern and chaetotaxy slightly variable (also in specimens of the same sample). Veins ending as follows (in order from base to tip): R1, Cu1 (or Cu1 ending under R1), M2+3, M3+4, R4+5 (or M3+4 ending under R4+5), M1+2; VR Cu 1.22–1.43 (1.31). Macrotrichia on C, R, distal half of M1+2, rarely on R1, distal part of R4+5 and distal half of false vein above M3+4, other veins bare; membrane with macrotrichia on r4+5, sometimes in m1+2, exceptionally a couple of macrotrichia in m3+4 (n = 1), other cells bare. Legs. Fore leg tibia with slightly curved spur 15–24 (20) µm long. Combs of mid and hind leg tibiae separated, ca. twice shorter than spurs; spurs of mid and hind leg unequal in shape (one shorter and straight, second longer and curved) and length: 12–24 µm long on mid leg and 20–36 µm long on hind leg. Basitarsus of mid leg with 2–3 sensilla chaetica. Lengths of leg segments and leg ratios distinctly different in specimens with fully-developed and reduced antennal plume, as shown in Table 1. fe ti ta1 ta2 ta3 ta4 ta5 LR p1 465 – 660 265 – 385 550 – 735 295 – 385 220 – 310 150 – 220 85 – 110 1.81 – 2.30 (575) (325) (640) (345) (270) (185) (100) (1.98) 570 – 745 385 – 450 570 – 600 285 195 – 235 145 – 150 105 – 115 1.43 – 1.49 (645) (420) p2 545 – 690 435 – 565 220 – 330 135 – 195 100 – 180 65 – 115 55 – 85 0.50 – 0.62 (600) (500) (265) (155) (115) (80) (65) (0.53) 610 – 640 495 – 510 250 135 115 85 85 0.49 p3 550 – 780 525 – 765 355 – 460 235 – 295 205 – 240 130 – 165 85 – 105 0.56 – 0.65 (675) (660) (405) (260) (225) (150) (95) (0.61) 675-690 645 – 675 330 205 190 120 90 0.49 Hypopygium (Figs 2; 3A–E; 4A; 5A–D). Gonostylus shorter than gonocoxite, 70–100 (80) µm long, rarely longer, up to 120 µm (n = 3, Finnish specimens). Phallapodeme strongly curved in anterior section. Anal tergite with bands of V-type separated, bearing 1 lateral seta on each side and 3–15 (8) median setae arranged irregularly at base of anal point (Figs 2A). Anal point stocky, broad at base, tongue-shaped or lanceolate, tapering toward blunt tip or with short nipple-like apical elongation, bearing 6–13 relatively large spinulae (exceptionally 3 spinulae present, n = 1) densely arranged between prominent crests (Figs 2A, 3A–E). Superior volsella rounded at base, narrowed at mid length, usually slightly swollen distally, with well-developed apical lip, 4–11 (usually 6–7) dorsal setae and small field of microtrichia confined to dorsolateral surface at base; digitus protruding slightly beyond apex of superior volsella, evenly tapering toward blunt tip (Figs 2A, 4A). Stem of median volsella strongly elongated, 40–60 (55) µm long, straight or slightly and evenly curved at most, bearing several setiform and 5–7 rarely 8 furcate lamellae on apex (Figs 2A, B, 5A–D). Inferior volsella with slight knee-like extension at base and distinct dorsal lobe forming a nose at mid length of inferior volsella (Figs 2A, 4A). Remarks. Our studies on Cladotanytarsus, by now carried out independently as based on materials from North America (M.P., W.G.) and Fennoscandia (L.P., W.G.) indicated that the same unknown species may occur in both the regions studied. Further materials from the Russian Far East confirmed its wide Holarctic distribution. As a result, Cladotanytarsus saetheri is described and compared with its relative, C. gedanicus. These two species were previously misidentified (Giłka 2009) due to morphological similarities in the hypopygial structure, i.a. peculiar shape of the median volsellae consisted of a long stem bearing dense furcate lamellae on apex (cf. Giłka 2001: fig. 2). A detailed character analysis indicated several distinct differences between C. saetheri and C. gedanicus, as shown in Figures 1 & 3–5 and Table 2. Though the weakly plumose and abbreviated antennae, shortened palps and changed proportions of legs segments in several examined males of Cladotanytarsus saetheri may disrupt the species definition, these characters were found as a result of a limited flying ability in specimens collected from the water surface (material from Finland). Thus, they are treated separately in the above description; nevertheless, all the presently examined individuals are defined as conspecific. Interestingly, the Finnish specimens were not sampled by simultaneous netting from the air and vegetation. So, it is probable, that they were copulating on the water surface. Such nontypical mode of life may have a diverse background, being e.g. an adaptation to austere conditions, which in a longterm period may lead to behavioural and spatial isolation (e.g. Serra-Tosio 1974, Hermann et al. 1987, Giłka & Paasivirta 2009, Giłka et al. 2013). This phenomenon usually results in parallel morphological modifications of the wings, antennae, palps and legs, in some cases called as atrophied aberrant characters, and may occur in different Chironomidae groups, including the Tanytarsini (e.g. Saether 1971, Cranston 1980, Giłka 2011b). Some peculiar leg structures/characters in Tanytarsini, however, are recogniZed as distinct apomorphies (Giłka 2011b; ZakrZewska et al., in press). Cladotanytarsus saetheri seems to prefer large, slow flowing rivers and the open shores of large oligotrophic lakes.

Cladotanytarsus saetheri, sp. nov., a widely distributed species (Fennoscandia; Russia: Far East; Canada: Manitoba; USA: Colorado, Michigan, South Carolina, Wisconsin) is described and compared with C. gedanicus Giłka, 2001 on the basis of new records (Fennoscandia; Canada: Manitoba, Nunavut; USA: Colorado, New Mexico). Intraspecific morphological variability of adult males is presented in order to delimit the two previously misidentified species.

Cladotanytarsus conversus (Johannsen) (Fig. 5 A, B) Tanytarsus conversus Johannsen, 1932: Johannsen 1932: 543 (adult male and female, Sumatra). Cladotanytarsus conversus (Johannsen, 1932): Langton & Garcia 2000: 199 (adult male and female, pupa, larva; South Asia; Europe: France, Greece). Cladotanytarsus tobaquardecimus Kikuchi et Sasa, 1990: Kikuchi & Sasa 1990: 314 (adult male, Sumatra), syn. nov. Material examined. BULGARIA. Danube, Svishtov, 17 September 2007, 16 males, leg. Wolfram Graf (ex coll. B. Janecek, deposit in DIZP). Holotype of Cladotanytarsus tobaquardecimus, adult male slide-mounted (No. 200:070): 5 photographs (slide + abdomen + hypopygium magnified) displayed on the NMNS website. Remarks. This widely distributed species is known from Indonesia in the south-east through Thailand and India to Europe in the north-west (Langton & Garcia 2000). With regard to the structural variations of the male hypopygium (cf. Fig. 5 A & B, Langton & Garcia 2000, figs 1 & 2, Kikuchi & Sasa 1990, fig. 20 and NMNS, photographs of the holotype), body colouration and the main metric/meristic characters (Table 3), we found no significant differences between specimens described as Cladotanytarsus conversus and C. tobaquardecimus, both names originally coming from Sumatra. Consequently, we propose to treat them as synonyms., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 352, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Johannsen, O. A. (1932) Chironominae of the Malayan subregion of the Dutch Indies. Archiv fur Hydrobiologie, 11 (Supplement), 503 - 552.","Langton, P. & Garcia, X. - F. (2000) A review of Cladotanytarsus conversus (Johannsen) with first record from Europe (Insecta, Diptera, Chironomidae). Spixiana, 23, 199 - 206.","Kikuchi, M. & Sasa, M. (1990) Studies on the chironomid midges (Diptera: Chironomidae) of the Lake Toba area, Sumatra, Indonesia. Japanese Journal of Sanitary Zoology, 41, 291 - 329. http: // doi. org / 10.7601 / mez. 41.291"]}

Cladotanytarsus acornutus Jacobsen et Bilyj (Fig. 1) Cladotanytarsus acornutus Jacobsen et Bilyj, 2007: Jacobsen & Bilyj 2007: 146 (adult male and female, pupa, larva; USA, Florida), Epler 2014: 20, 22, 23 (larva, in key; all stages, remarks; USA, Florida). Material examined. CANADA. ONTARIO. North Kawartha, Julian Lake N of Peterborough (swarm at edge of lake), August 1968, 10 males, leg. John A. Spence. Waterloo, shallow pond, 2 males, leg. John A. Spence. USA. SOUTH CAROLINA. Oconee Co., Hartwell Lake, Clemson, 7 July 1973, 1 male, leg. P. Hudson. Oconee Co., Keowee Reservoir, 21 April, 1975, 1 male (abdomen with hypopygium), 11 May 1975, 1 male, 30 May 1975, 1 male, 6 June 1975, 3 pharate males in 3 Pex, leg. P. Hudson. Ex coll. M. & J.E. Sublette. Deposit in DEUM. Diagnostic description (supplementations to the original description). Adult male. Head. AR 0.68���0.98. Frontal tubercles small, cylindrical, 5���15 ��m long. Length of palpomeres 2��� 5 (in ��m): 25���35, 50���95, 70���100, 110���160. Clypeus semicircular, with 12���17 setae. Thorax chaetotaxy. Ac usually absent, up to 3 if present (n = 3); Dc 6���8; Pa 1; Scts 2���4. Wing. Length 1150���1500 ��m. Shape, venation pattern and chaetotaxy as in original description; R, R1 and R4+5 rarely with macrotrichia and m1+2, r4+5 sometimes with sparse macrotrichia distally, VR Cu 1.16���1.49 (1.25). Legs. Fore leg tibia with straight spur ca. 20 ��m long. Each comb of mid and hind leg tibiae bearing straight or slightly curved spur: ca. 15���20 ��m long on mid leg and up to 25 ��m long on hind leg. Basitarsus of mid leg usually without sensilla chaetica, sometimes with 2���4 hook-shaped sensilla present (n = 7). For lengths of leg segments and leg ratios, see Table 1. Hypopygium (Fig. 1). Gonostylus ca. 75 ��m long, with apical seta placed on conical tubercle. Anal tergite with V-type separated bands and 4���10 setae arranged in irregular rows or setae dispersed at base of anal point. Anal point variable in shape, elongate, evenly tapering towards apex, with up to 6 spinulae between narrow crests or crests not developed (Fig. 1 A, C). Superior volsella pear-shaped in dorsal aspect, with more on less narrowed distal part, bearing field of microtrichia on proximal (swollen) part, 6���9 dorsal setae and 3 long setae placed on conical tubercles at base. Digitus straight or slightly curved, long, extending far beyond superior volsella, with finger-like tip (Fig. 1 A, D). Stem of median volsella relatively long (ca. 35 ��m), straight or finely curved, as shown in Fig. 1 E, bearing several setiform and 4���5 furcate lamellae: 3���4 strong and 1���2 weaker (Fig. 1 B, E). Inferior volsella with slight lateral knee-like extension at base, distinctly curved and posteromedially or medially directed, darkly pigmented dorsomedian ridge narrow (Fig. 1 A, B, F). Remarks. In the Sublettes��� collection of North American Cladotanytarsus, nearly 20 adult and pharate male specimens as well as their pupal exuviae were identified as C. acornutus. Records of this species have so far been confined to the Florida Everglades, where C. acornutus has been defined as one of the most abundant chironomids and an outstanding indicator of nutrient-poor and minimally disturbed habitats (Jacobsen & Bilyj 2007, Epler 2014). Our records from southern Ontario, Canada, and from the northern part of South Carolina, USA, provide evidence that the geographical distribution of C. acornutus is wider than that previously assumed. According to Epler (op. cit.), larvae outside of the Everglades believed to be this species are determinable after association with a pupa that lacks a thoracic horn and/or with an adult male that has weak hypopygial anal point crests and lacks acrostichal setae. Indeed, the currently examined specimens have thin or reduced crests, and the acrostichals are usually absent (at most 3 if present). The pupal exuviae are also consistent with those originally described, except for a TII hooklet row that consists of a slightly larger number of hooklets at 1/2 width of the segment; none of the pupal exuviae examined have a thoracic horn., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on pages 345-347, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Jacobsen, R. E. & Bilyj, B. (2007) An unusual new Cladotanytarsus from oligotrophic Florida Everglades marshes (Diptera: Chironomidae). In: Andersen, T. (Ed.), Contributions to the Systematics and Ecology of Aquatic Diptera - A Tribute to Ole A. Saether. The Caddis Press, Columbus, Ohio, pp. 145 - 154.","Epler, J. H. (2014) Identification guide to the larvae of the tribe Tanytarsini (Diptera: Chironomidae) in Florida. Florida Department of Environmental Protection, Tallahassee, 77 pp. Available from: http: // johnepler. com / Tanytarsini % 202014. pdf (accessed 23 November 2016)"]}

Two species of the genus Cladotanytarsus Kieffer, 1921 are described as adult males, both peculiar in having distinctively elongated hypopygial anal points. The male of Cladotanytarsus bilyji Gilka et Puchalski, sp. nov. (Canada, Manitoba; USA, Ohio) is presumed to be a close relative of C. nigrovittatus (Goetghebuer, 1922). Another unknown Cladotanytarsus species (USA, Illinois and Louisiana) keys with the European C. donmcbeani Langton et McBean, 2010. The intraspecific variability of the male C. acornutus Jacobsen et Bilyj, 2007 is also presented on the basis of new records (Canada, Ontario; USA, South Carolina). Cladotanytarsus males with similarly structured elongate anal points are reviewed, including C. tobaquardecimus Kikuchi et Sasa, 1990, considered a junior synonym (syn. nov.) of C. conversus (Johannsen, 1932). As a compilation of this study, a key to the identification of the adult males of 14 Cladotanytarsus species is provided.

Cladotanytarsus muricatus Bilyj Cladotanytarsus muricatus Bilyj, 1989: Bilyj & Davies 1989: 956 (adult male and female, pupa; Canada, Ontario). Material examined. Adult male specimen dissected and mounted under 6 cover slips, labelled as follows: Can. Nat. Coll., Type No. 19724, Cladotanytarsus muricatus B. Bilyj, �� PARATYPE, Slide No. 1, E.L.A. 70 km ESE Kenora, On, Lake 223 no. X1025.A3, 30.VI.-1.VII.1976 (leg. I. Davies). Deposit in CNC. Remarks. The examined specimen shows an anal point with a strong spine-like elongation, similar to that shown in figure 7 by Bilyj and Davies (1989) but slightly longer. Adult males of this species are also distinct in the shape of the superior volsella, narrowed in distal half, and the median volsella with a few weak lamellae placed distally on a long stem. Due to the latter character, the species falls into the couplet 13 of the present key (see below)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 350, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Bilyj, B. & Davies, I. J. (1989) Descriptions and ecological notes on seven new species of Cladotanytarsus (Chironomidae: Diptera) collected from an experimentally acidified lake. Canadian Journal of Zoology, 67, 948 - 962. https: // doi. org / 10.1139 / z 89 - 138"]}

Cladotanytarsus nigrovittatus (Goetghebuer) (Fig. 5 C, D) Tanytarsus nigrovittatus Goetghebuer, 1922: 41 (adult male, Belgium). Cladotanytarsus mancus (Walker): Brundin 1947: 80 (adult male, Sweden); Hirvenoja 1962: 180 (adult male and female, pupa; Finland); Giłka 2001: 319 (adult male, Poland). Material examined. FINLAND. Inari-Vuopajanniemi, 28 July 2002, 6 males. Lemmenjoki-Njurgalahti, 20 July 2002, 50 males. Menesj��rvi near Lemmenjoki, 17 July 2002, 20 males, 29 July 2002, 2 males. Rovaniemi, 13 July 2002, 35 males. Saarij��rvi, 14 July 2002, 13 males. Veskoniemi, 19 July 2002, 10 males. POLAND. Delowo near Stężyca, 18 June 2009, 1 male [for other records from Poland, see Giłka (2001)]. SWEDEN. ��ngerman��lven, 20 July 0 3, 2 males. Bjurs��s, 18 July 2003, 16 males. Jokkmokk, 21 July 2003, 12 males. Hammerdalssj��n, 20 July 2003, 74 males. Malmesjaure, 20 July 2003, 97 males. R��tanssj��n, 19 July 2003, 40 males. S��len (river and fishponds), 1 July 2006, 17 males. Sorsele, 20 July 2003, 22 males. All specimens collected by W. Giłka (deposit in DIZP). Remarks. This well-known species has already been redescribed in detail, so only photographs of a typical hypopygium are presented to delimit this species among other Cladotanytarsus males with strongly elongate anal points (Fig. 5 C, D). New records come mainly from lakes in Scandinavia., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 355, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Goetghebuer, M. (1922) Nouveaux materiaux pour l'etude de la fauna de Chironomides de Belgique. Annales de Biologie Lacustre, 11, 38 - 62.","Brundin, L. (1947) Zur Kenntnis der Schwedischen Chironomiden. Arkiv for Zoologi, 39, 1 - 95.","Hirvenoja, M. (1962) Cladotanytarsus - Arten (Dipt., Chironomidae) aus Finnisch-Lappand. Annales Entomologici Fennici, 28, 173 - 181.","Gilka, W. (2001) A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species. Polish Journal of Entomology, 70, 307 - 328."]}

Cladotanytarsus cyrylae Giłka Cladotanytarsus cyrylae Giłka, 2001: Giłka 2001: 309 (adult male, Poland); Giłka 2009b: 378 (Poland, Ukraine); Paasivirta 2012: 66 (Finland). Material examined. Holotype and paratypes (Giłka 2001). New data. POLAND. Lake Czarne at Niesiołowice near Stężyca, 9 June 2010, 1 male, leg. W. Giłka. Lake Straszyńskie near Gdańsk, 5 August 2014, 57 males, 15 September 2014, 3 males; leg. F. Zimny. Deposit in DIZP. Remarks. For the systematics, including intraspecific morphological variations, and biology of this species, see Giłka (2001, 2009b). Recent records of Cladotanytarsus cyrylae come from Lake Straszyńskie, the drinking water reservoir for the city of Gdańsk (Puchalski et al. 2016)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 353, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Gilka, W. (2001) A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species. Polish Journal of Entomology, 70, 307 - 328.","Gilka, W. (2009 b) New and rare chironomids of the tribe Tanytarsini in Poland (Diptera: Chironomidae). Polish Journal of Entomology, 78, 377 - 384.","Paasivirta, L. (2012) Finnish Chironomidae. Chironomus, Newsletter on Chironomidae Research, 25, 47 - 70. https: // doi. org / 10.5324 / cjcr. v 0 i 25.1546","Puchalski, M., Zimny, F. & Gilka, W. (2016) Cladotanytarsus molestus Hirvenoja, 1962 in Poland: toward the identification of bioindicative Tanytarsini (Diptera: Chironomidae). Oceanological and Hydrobiological Studies, 45, 316 - 323. https: // doi. org / 10.1515 / ohs- 2016 - 0030"]}

Cladotanytarsus (Lenziella) glaber Giłka et Puchalski, sp. nov. Type material. Holotype, adult male: USA, OREGON, Klamath County, Rocky Point Resort at the Upper Klamath Lake, Recreation Creek (42��28'42"N / 122��05'16"W), 2 June 1982, leg. J.E. Sublette. Paratype: 1 male (same location and date as for holotype). Derivation of the name. The specific name, derived from the Latin word meaning hairless, refers to the extensive microtrichia-free area of the hypopygial tergite. Diagnosis. Tibial apices of mid and hind leg with slight lobes armed with dense curved setae; spurs present, variable in shape. Anal tergite with extensive microtrichia-free area at anal point base. Anal point stout, tongueshaped. Superior volsella abruptly narrowed in distal half and slightly swollen apically. Median volsella with stocky stem bearing 7���8 furcate lamellae. Inferior volsella with distinct dorsomedian ridge and large globular swelling ventrally. Description. Adult male (n = 2). Colouration (slide-mounted specimens). Eyes black. Antennal pedicel, tentorium, scutal stripes, scutellum, postnotum, sternum and proximal abdominal segments dorsally brown. Head capsule, antennal flagellum, mouthparts, legs and remaining part of abdomen including hypopygium olive green. Wing and haltere pale greenish. Head. Eyes reniform, broadly separated. Antenna with 13 flagellomeres, AR ca. 1.1; plume fully-developed. Frontal tubercles more or less conical, 12���20 ��m long, 6���8 ��m wide at base. Lengths of palpomeres 2���5 (in ��m): 36, 91���99, 111���115, 139���143. Clypeus with 13���18 setae. Thorax chaetotaxy. Ac 4���7, Dc 8���12, Pa 1, Scts 4. Wing (Fig. 1 A). Slender; length 1815���1845 ��m; max. width 495���540 ��m. C, R, distal half of M1+2 and R4+5 with macrotrichia, R1 with 2���8 macrotrichia, other veins bare. Membrane with macrotrichia in distal half of r4+5 and with a few macrotrichia in apical section of m1+2, other cells bare. VR Cu 1.12���1.20. Legs (Fig. 1 B���G). Fore leg tibia with slightly curved spur (Fig. 1 B, C), 12���28 ��m long. Combs of mid and hind leg tibiae separated, usually vestigial; spurs variable in shape (Fig. 1 D���G) and length: ca. 16���24 ��m long on mid leg and 24���28 ��m long on hind leg. Tibial apices of mid and hind leg with slight lobes armed with dense curved setae (Fig. 1 D���G). Basitarsus of mid leg with 1���4 sensilla chaetica. For lengths of leg segments and leg ratios see Table 1. Hypopygium (Fig. 2, 3 D). Gonostylus slightly shorter than gonocoxite, 100���120 ��m long, stout, broadest at mid length, tapering to tip bearing distinct setal tubercle. Anal tergite with V-type bands, 13���19 median setae arranged irregularly and extensive microtrichia-free area at anal point base (Fig. 2 A, B). Anal point stout, tongueshaped, with transversely cut apex, bearing 12���13 spinulae and well-developed crests (Fig. 2 A, B). Superior volsella rounded at base, abruptly narrowed in distal half and slightly swollen apically, covered with dense microtrichia on proximal (swollen) part and with 9���12 setae dorsally; digitus long, with finger-like tip extending far beyond apex of superior volsella (Fig. 2 A, C). Median volsella stocky, with stem club-shaped, bearing 7���8 furcate lamellae (Fig. 2 D). Inferior volsella with distinct dorsomedian ridge and large globular and wrinkled swelling ventrally (Fig. 2 A, 3D)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, A new species of Cladotanytarsus (Lenziella) from Oregon supports the systematic concept of the subgenus (Diptera: Chironomidae), pp. 573-580 in Zootaxa 4268 (4) on pages 574-577, DOI: 10.11646/zootaxa.4268.4.8, http://zenodo.org/record/580987

Cladotanytarsus tobaquindecimus Kikuchi et Sasa Cladotanytarsus tobaquindecimus Kikuchi et Sasa, 1990: Kikuchi & Sasa 1990: 316 (adult male, Sumatra). Material examined. Holotype, adult male slide-mounted (No. 199:018): 4 photographs (slide + hypopygium magnified) displayed on the NMNS website., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 356, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Kikuchi, M. & Sasa, M. (1990) Studies on the chironomid midges (Diptera: Chironomidae) of the Lake Toba area, Sumatra, Indonesia. Japanese Journal of Sanitary Zoology, 41, 291 - 329. http: // doi. org / 10.7601 / mez. 41.291"]}

Key to adult males with elongated hypopygial anal points of the subgenus Cladotanytarsus s. str. 1. Stem of median volsella bearing furcate/branched lamellae (Figs 1 E, 3E, 4E, 5B, D)......... Cladotanytarsus Kieffer... 2 -. Median volsella never as above................................................... other Tanytarsini...not keyed 2. Apices of middle and hind leg tibiae without stout lobes armed with dense setae but with fan-shaped combs, at least one comb bearing spur (Kikuchi & Sasa 1990, fig. 20d, e; Giłka 2001, fig. 1f; Jacobsen & Bilyj 2007, fig. 4; Giłka 2009a, figs 11, 12). Inferior volsella never with globular swelling ventrally, with knee-shaped extension at most (Figs 1 B, F, 3A, B, F, 4A, B, F, 5B, D; Giłka & Dobosz 2015, fig. 1d).....................................subgenus Cladotanytarsus s. str. Kieffer.... 3 -. Apices of middle and hind leg tibiae bearing stout lobes armed with dense setae, combs and spurs vestigial if present (Giłka 2011b, figs 2c, d, 4b���e, 5, 8, 11, 12: b, c). Inferior volsella bearing distinct globular swelling ventrally (Giłka 2011b, figs 2h, 4k, 5g, 8g, 11g, 12h)................................................... subgenus Lenziella Kieffer... not keyed 3. Anal point with longitudinal bar (Reiss 1991, fig. 2)........................................ C. ecristatus (Morocco) -. Anal point without longitudinal bar...................................................................... 4 4. Stem of median volsella shorter than its lamellae or stem and lamellae of similar length (Figs 4 B, E, 5B; Glover 1973, fig. 2 4b; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1e; Giłka 2009a, fig. 16; Giłka & Dobosz 2015, fig. 1c)................5 -. Stem of median volsella distinctly longer than its lamellae (Figs 1 B, E, 3B, E, 5D; Jacobsen & Bilyj 2007, fig. 5)....... 13 5. Anal point in shape of elongated arrow, evenly tapering to pointed apex (Glover 1973, fig. 24a; Kikuchi & Sasa 1990, fig. 21c; Sasa & Suzuki 2000, fig. 3i ���k; Giłka 2009a, fig. 13), exceptionally truncate (Glover 1973, fig. 24d)................... 6 -. Anal point with parallel-sided distal elongation and/or apically blunt/rounded (Figs 4 A, C, 5A; Langton & Garcia 2000, figs 1a, 2a, b; Langton & McBean 2010, figs 1���3; Giłka & Dobosz 2015, fig. 1a, b; NMNS 200:070) otherwise broad at base (Giłka 2001, fig. 1b, c)...................................................................................... 9 6. Spinulae absent.......................................................................................7 -. Spinulae present..................................................................................... 8 7. Anal point darkly pigmented, black or dark brown; gonostyli slender (Giłka 2009a, fig. 13)................................................................................................... C. sagittifer (United Arab Emirates) -. Anal point ordinarily coloured; gonostyli stout (Glover 1973, fig. 24)......................... C. bilinearis (Australia) 8. Inferior volsella cuneiform, evenly tapering to narrow apex (Kikuchi & Sasa 1990, fig. 21f & NMNS 199:018)........................................................................................ C. tobaquindecimus (Sumatra) -. Inferior volsella parallel-sided, with broadly rounded apex (Sasa & Suzuki 2000, fig. 3p, q & NMNS 385:002)............................................................................................... C. isigacedeus (Japan) 9. Inferior volsella with distinct lateral knee-shaped extension at base (Giłka & Dobosz 2015, fig. 1a, d)................................................................................................. C. stylifer (New Caledonia) -. Inferior volsella without distinct lateral knee-shaped extension at base (Figs 4 A, B, F, 5A, B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1b; Langton & McBean 2010, fig. 1)....................................................... 10 10. Inferior volsella slender at base (Fig. 5 A, B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1b). Stem of median volsella slender, bearing 3���4 branched lamellae, stem and its lamellae of similar length (Fig. 5 B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1e)....................................................................................... 11 -. Inferior volsella strongly broadened at base (Fig. 4 B, F; Langton & McBean 2010, fig. 1). Stem of median volsella stocky, bearing 6���7 branched lamellae, the longest lamella longer than its stem (Fig. 4 B, E; Langton & McBean 2010, figs 1, 4). 12 11. Anal point narrow at base, rounded apically or club-shaped (Fig. 5 A; Langton & Garcia 2000, figs 1a, 2a, b; NMNS 200:070).................................................................................. C. conversus (Eurasia) -. Anal point broad at base, distal elongation pointed (Giłka 2001, fig. 1b, c)......................... C. cyrylae (Europe) 12. Spinulae absent, tip of digitus hooked (Langton & McBean 2010, figs 1���3)................ C. donmcbeani (Great Britain) -. Spinulae usually present, digitus straight (Fig. 4 A, C, D)................................. Cladotanytarsus sp. (USA) 13. Crests of anal point very thin or not developed (Fig. 1 A, C; Jacobsen & Bilyj 2007, figs 5���7). Acrostichal setae usually absent.................................................................................. C. acornutus (Nearctic) -. Crests of anal point well-developed (Figs 3 A, C, 5C; Bilyj & Davies, fig. 7). Acrostichal setae always present...........14 14. Median volsella with 2���3 weak branched lamellae; inferior volsella without distinct lateral knee-shaped extension at base or angular dorsomedian ridge (Bilyj & Davies, fig. 7). Small species, wing length ca. 1.2���1.4 mm..... C. muricatus (Canada) -. Median volsella with 6���7 strong branched lamellae (Figs 3 B, E, 5D); inferior volsella with distinct lateral knee-shaped extension at base and well-developed angular dorsomedian ridge (Figs 3 A, B, F, 5D). Species moderate in size, wing length ca. 1.5��� 2.5 mm.............................................................................................15 15. Superior volsella slender, slightly swollen distally, covered with sparse microtrichia on basal part dorsally (Fig. 3 A, D). Lamellae of median volsella slightly curved, arranged evenly on median and apical part of stem (Fig. 3 B, E)... C. bilyji (Nearctic) -. Superior volsella broad at base, tapering towards tip, covered with dense microtrichia on proximal 2/3 part (Fig. 5 C; Giłka 2001, fig. 7b, d). Lamellae of median volsella strongly curved, densely placed on apical part of stem (Fig. 5 D; Giłka 2001, fig. 7e)........................................................................... C. nigrovittatus (Holarctic), Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on pages 356-357, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Kikuchi, M. & Sasa, M. (1990) Studies on the chironomid midges (Diptera: Chironomidae) of the Lake Toba area, Sumatra, Indonesia. Japanese Journal of Sanitary Zoology, 41, 291 - 329. http: // doi. org / 10.7601 / mez. 41.291","Gilka, W. (2001) A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species. Polish Journal of Entomology, 70, 307 - 328.","Jacobsen, R. E. & Bilyj, B. (2007) An unusual new Cladotanytarsus from oligotrophic Florida Everglades marshes (Diptera: Chironomidae). In: Andersen, T. (Ed.), Contributions to the Systematics and Ecology of Aquatic Diptera - A Tribute to Ole A. Saether. The Caddis Press, Columbus, Ohio, pp. 145 - 154.","Gilka, W. (2009 a) Order Diptera, family Chironomidae, tribe Tanytarsini. In: Sheikh, H. H., Al Nahyan, T. B. Z. (Patrons) & van Harten A. (Eds.), Arthropod fauna of the United Arab Emirates. Fol. 2. Dar Al Ummah Printing, Publishing, Distribution & Advertising, Abu Dhabi, pp. 667 - 682.","Gilka, W. & Dobosz, R. (2015) A contribution to the systematics of Australasian Tanytarsini (Diptera: Chironomidae): first descriptions from New Caledonia. Zootaxa, 3980 (1), 127 - 135.","Gilka, W. (2011 b) Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini). Zootaxa, 3100, 1 - 34.","Reiss, F. (1991) Drei neue Tanytarsini-Arten aus Marokko (Diptera, Chironomidae). Nachrichtenblatt der Bayerischen Entomologen, 40, 45 - 52.","Glover, B. (1973) The Tanytarsini (Diptera: Chironomidae) of Australia. Australian Journal of Zoology, 23 (Supplement), 403 - 478.","Langton, P. & Garcia, X. - F. (2000) A review of Cladotanytarsus conversus (Johannsen) with first record from Europe (Insecta, Diptera, Chironomidae). Spixiana, 23, 199 - 206.","Sasa, M. & Suzuki, H. (2000) Studies on the chironomid species collected on Ishigaki and Iriomote islands, Southwestern Japan. Tropical Medicine, 42, 1 - 37. Avaliable from: http: // hdl. handle. net / 10069 / 4787 (Accessed 9 Mar. 2017)","Langton, P. H. & McBean, S. F. (2010) Cladotanytarsus donmcbeani sp. nov. (Diptera, Chironomidae) from Loch Leven, Kinross-shire, Scotland. Dipterists Digest, 17, 109 - 114."]}

Cladotanytarsus isigacedeus (Sasa et Suzuki) Tanytarsus isigacedeus Sasa et Suzuki, 2000: Sasa & Suzuki 2000: 6 (adult male, Japan). Cladotanytarsus isigacedeus (Sasa et Suzuki, 2000): Giłka & Dobosz 2015: 130 (generic transfer). Material examined. Holotype, adult male slide-mounted (No. 385:002): 4 photographs (slide + hypopygium magnified) displayed on the NMNS website. Remarks. The key characters for the adult male of this species were recently analysed by comparison with Cladotanytarsus bilinearis, C. conversus and C. stylifer from the Australasian and Indo-Pacific regions (Giłka & Dobosz 2015, table 2)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 355, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Sasa, M. & Suzuki, H. (2000) Studies on the chironomid species collected on Ishigaki and Iriomote islands, Southwestern Japan. Tropical Medicine, 42, 1 - 37. Avaliable from: http: // hdl. handle. net / 10069 / 4787 (Accessed 9 Mar. 2017)","Gilka, W. & Dobosz, R. (2015) A contribution to the systematics of Australasian Tanytarsini (Diptera: Chironomidae): first descriptions from New Caledonia. Zootaxa, 3980 (1), 127 - 135."]}

Cladotanytarsus bilinearis Glover Cladotanytarsus bilinearis Glover, 1973: Glover 1973: 433 (adult male and female, Australia). Remarks. Diagnostic characters for the adult male of this species were recently analysed by comparison with Cladotanytarsus conversus (Johannsen), C. isigacedeus (Sasa et Suzuki) and C. stylifer Giłka, known to occur in the Australasian and Indo-Pacific regions (Giłka & Dobosz 2015, table 2)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 352, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Glover, B. (1973) The Tanytarsini (Diptera: Chironomidae) of Australia. Australian Journal of Zoology, 23 (Supplement), 403 - 478.","Gilka, W. & Dobosz, R. (2015) A contribution to the systematics of Australasian Tanytarsini (Diptera: Chironomidae): first descriptions from New Caledonia. Zootaxa, 3980 (1), 127 - 135."]}

Cladotanytarsus sp. (Fig. 4) Material examined. USA. ILLINOIS. Du Bois, 24 April 1914, 1 male hypopygium (S66-1261). LOUISIANA. New Orleans, 14 May 1952, 4 male hypopygia (S64-818, 821, 822, 823). Main body parts missing. Ex coll. M. & J.E. Sublette (legator unknown). Deposit in DEUM. Diagnostic description. Adult male (n = 5, hypopygia). Hypopygium (Fig. 4). Gonostylus shorter than gonocoxite, ca. 85 ��m long, with apex pointed. Anal tergite with V-type separated bands and 7���9 median setae placed in two irregular rows. Anal point with parallel-sided distal elongation, apically blunt or rounded, bearing 3 spinulae at most or spinulae absent (Fig. 4 A, C). Superior volsella horn-shaped, with pointed apex, bearing field of microtrichia on 2/3 basal part or basal half at least, 5���8 dorsal setae and 3 long setae placed on conical tubercles at base. Digitus straight or very slightly curved, apex narrow, extending far beyond superior volsella (Fig. 4 A, D). Stem of median volsella stocky, ca. 30 ��m long, shorter than its longest lamellae, bearing several setiform and 6���7 branched lamellae (4 strong and 2���3 weaker) (Fig. 4 B, E). Inferior volsella as drawn in Fig. 4 F, strongly broadened at base, with distinct round margin on ventral side, dorsomedian ridge thin (Fig. 4 A, B, F). Remarks. Among the oldest specimens sampled from the Sublettes��� collection we found several male hypopygia belonging to a species which, in view of the set of diagnostic characters, deserves to be presented. The slender anal point with the parallel-sided distal elongation, the horn-shaped superior volsella, the stocky stem of the median volsella bearing stout branched lamellae and the inferior volsella strongly broadened at the base may indicate a close similarity to Cladotanytarsus donmcbeani Langton et McBean, 2010 (cf. Fig. 4 and Langton & McBean 2010, figs 1��� 4). According to the original description (op. cit.), these two Cladotanytarsus species differ as adult males in the presence/absence of anal point spinulae and the shape of the digitus, apically hooked in C. donmcbeani., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 352, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Langton, P. H. & McBean, S. F. (2010) Cladotanytarsus donmcbeani sp. nov. (Diptera, Chironomidae) from Loch Leven, Kinross-shire, Scotland. Dipterists Digest, 17, 109 - 114."]}

Cladotanytarsus ecristatus Reiss Cladotanytarsus ecristatus Reiss, 1991: Reiss 1991: 45 (adult male, Morocco). Remarks. In terms of the structure of the hypopygial anal point, which bears a longitudinal bar but no crests or spinulae, as well as the shape of hypopygial volsellae and the body colouration, Cladotanytarsus ecristatus is one of the most peculiar species within the genus. All known records come from the Atlas Mountains (Reiss 1991)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 353, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Reiss, F. (1991) Drei neue Tanytarsini-Arten aus Marokko (Diptera, Chironomidae). Nachrichtenblatt der Bayerischen Entomologen, 40, 45 - 52."]}

Cladotanytarsus sagittifer Giłka Cladotanytarsus sagittifer Giłka, 2009: Giłka 2009a: 671 (adult male, UAE). Material examined. Holotype and paratypes (Giłka 2009a). UNITED ARAB EMIRATES. Al Wathba Wetland Reserve (AWWR), October 2014, 1 male, June 2015, 1 male, Malaise traps, leg. A. Saji & A. van Harten. Deposit in DIZP. Remarks. Adult males of this peculiar species have an extremely elongated, sagittate and darkly pigmented hypopygial anal point lacking crests and spinulae (Giłka 2009a, figs 13, 14). Cladotanytarsus sagittifer has so far been known from three sites in the United Arab Emirates. The present record comes from the Al Wathba Wetland Reserve (40 km SE of Abu Dhabi) - one of the most important inland wetlands in the UAE, waterlogged during the winter months, presumably the result of sub-surface flow and hydrostatic back-up during spring high tides (Soorae et al. 2014)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 355, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Gilka, W. (2009 a) Order Diptera, family Chironomidae, tribe Tanytarsini. In: Sheikh, H. H., Al Nahyan, T. B. Z. (Patrons) & van Harten A. (Eds.), Arthropod fauna of the United Arab Emirates. Fol. 2. Dar Al Ummah Printing, Publishing, Distribution & Advertising, Abu Dhabi, pp. 667 - 682.","Soorae, P. S., Al Zaabi, R., Saji, A., Sakkir, S., Ahmed, S. & Khan, S. (2014) Al Wathba Wetland Reserve Field Guide. Environment Agency, Abu Dhabi, 84 pp."]}

Cladotanytarsus sp. (Fig. 4) Material examined. USA. ILLINOIS. Du Bois, 24 April 1914, 1 male hypopygium (S66-1261). LOUISIANA. New Orleans, 14 May 1952, 4 male hypopygia (S64-818, 821, 822, 823). Main body parts missing. Ex coll. M. & J.E. Sublette (legator unknown). Deposit in DEUM. Diagnostic description. Adult male (n = 5, hypopygia). Hypopygium (Fig. 4). Gonostylus shorter than gonocoxite, ca. 85 µm long, with apex pointed. Anal tergite with V-type separated bands and 7–9 median setae placed in two irregular rows. Anal point with parallel-sided distal elongation, apically blunt or rounded, bearing 3 spinulae at most or spinulae absent (Fig. 4 A, C). Superior volsella horn-shaped, with pointed apex, bearing field of microtrichia on 2/3 basal part or basal half at least, 5–8 dorsal setae and 3 long setae placed on conical tubercles at base. Digitus straight or very slightly curved, apex narrow, extending far beyond superior volsella (Fig. 4 A, D). Stem of median volsella stocky, ca. 30 µm long, shorter than its longest lamellae, bearing several setiform and 6–7 branched lamellae (4 strong and 2–3 weaker) (Fig. 4 B, E). Inferior volsella as drawn in Fig. 4 F, strongly broadened at base, with distinct round margin on ventral side, dorsomedian ridge thin (Fig. 4 A, B, F). Remarks. Among the oldest specimens sampled from the Sublettes’ collection we found several male hypopygia belonging to a species which, in view of the set of diagnostic characters, deserves to be presented. The slender anal point with the parallel-sided distal elongation, the horn-shaped superior volsella, the stocky stem of the median volsella bearing stout branched lamellae and the inferior volsella strongly broadened at the base may indicate a close similarity to Cladotanytarsus donmcbeani Langton et McBean, 2010 (cf. Fig. 4 and Langton & McBean 2010, figs 1– 4). According to the original description (op. cit.), these two Cladotanytarsus species differ as adult males in the presence/absence of anal point spinulae and the shape of the digitus, apically hooked in C. donmcbeani.

Cladotanytarsus bilyji Giłka et Puchalski, sp. nov. (Figs 2, 3) Type material. Holotype, adult male: CANADA, MANITOBA, Lake Winnipeg, Old Fishing Dock (51��33��� N / 96��43��� W), 16 June 1971, leg. E. Johnson & M. Roberts (prep. O.A. Saether). Paratype: USA. OHIO. Clermont County, Shayler Run at Baldwin Road (39��07���06��� N / 84��12���59��� W), 20 September 1999, 1 adult male, leg. J. Trybula. Ex coll. M. & J.E. Sublette. Deposit in DEUM. Derivatio nominis. The specific epithet honours Bohdan Bilyj (Etobicoke, Canada), to commemorate his contribution to the study of Nearctic Cladotanytarsus. Diagnosis. Anal point strongly elongate, evenly tapering toward apex. Superior volsella slender, narrowed at mid length, with field of microtrichia on basal part dorsally. Stem of median volsella ca. 40 ��m long, longer than its setiform and 7���8 furcate lamellae, all arranged evenly on median and apical part of stem. Inferior volsella with lateral knee-like extension at base, with well-developed angular dorsomedian ridge. Description. Adult male (n = 2). Colouration (slide-mounted specimens). Eyes black. Antennal pedicel, tentorium, scutal stripes, scutellum, postnotum and sternum dark brown. Head capsule, antennal flagellum, mouthparts and abdomen greenish to light brown; hypopygium and legs slightly darker. Wing membrane transparent with greenish undertone, veins brownish. Head. Eyes reniform, broadly separated. Antenna with 13 flagellomeres, AR 0.92���0.94; plume fullydeveloped. Frontal tubercles cylindrical, 12���24 ��m long. Lengths of palpomeres 2���5 (in ��m): 32���36, 84���104, 100��� 108, 164 (n = 1). Clypeus semicircular, with 14���15 setae. Thorax chaetotaxy. Ac 7���8, Dc 8, Pa 1, Scts 4���6. Wing (Fig. 2). Length 1520���1720 ��m. Shape, venation pattern and chaetotaxy typical of the genus, as shown in Fig. 2; Cu1, R1 and m3+4 bare or with few macrotrichia at most; VR Cu 1.18���1.28. Legs. Fore leg tibia with straight spur ca. 20 ��m long. Combs of mid and hind leg tibiae separated, each bearing straight spur: ca. 15���20 ��m long on mid leg and up to ca. 30 ��m long on hind leg. Basitarsus of mid leg with 2���4 hook-shaped sensilla chaetica. For lengths of leg segments and leg ratios, see Table 2. Hypopygium (Fig. 3). Gonostylus shorter than gonocoxite, ca. 70 ��m long, with blunt apex. Anal tergite with V-type separated bands and 7���8 median setae placed in two rows. Anal point elongate, evenly tapering towards slender apex (slightly deformed in paratype specimen, Fig. 3 C), bearing 7���8 spinulae between well-developed crests, entire area surrounding base of anal point covered with microtrichia (Fig. 3 A, C). Superior volsella slender, elongate, more or less narrowed at mid length, bearing field of microtrichia dorsally only on basal part or proximal 1/3 at most, 6���11 dorsal setae, 1���2 setae on anteromedian margin and 3 long setae placed on conical tubercles at base. Digitus curved, long, extending far beyond superior volsella, with finger-like tip (Fig. 3 A, D). Stem of median volsella slightly curved and directed posteriorly, long (ca. 40 ��m), bearing several setiform and 7���8 furcate lamellae: 4 strong and 3���4 weaker, all arranged evenly on median and apical part of stem (Fig. 3 B, E). Inferior volsella with lateral knee-like extension at base, evenly curved and directed posteromedially, darkly pigmented dorsomedian ridge distinctly protruding, angular (Fig. 3 A, B, F). Remarks. Apart from the strongly elongate anal tergite point, this new species can be distinguished from other Cladotanytarsus on the following combination of characters: the superior volsella slender and narrowed at mid length, with field of microtrichia only on basal part dorsally, the median volsella composed of a long stem and 7���8 furcate lamellae and the inferior volsella with a lateral knee-like extension at the base, bearing a well-developed angular dorsomedian ridge. According to preliminary determinations (Sublette, Saether; pers. comm.), there are at least 8 or 9 additional Cladotanytarsus species recorded from the Lake Winnipeg region (locus typicus of C. bilyji), which should be compared with those described by Bilyj and Davies (1989) from northwestern Ontario. We examined all the Cladotanytarsus species by Bilyj (op. cit.) known from adult males (excl. C. aeiparthenus Bilyj, 1989). However, even when atypical variations are included, most of the males examined (except for C. muricatus Bilyj, 1989, see remarks below) do not fully fit the present concept of the strongly elongate and narrow hypopygial anal point. Males of those species have relatively short anal points (C. daviesi Bilyj, 1989, C. pinnaticornis Bilyj, 1989), without a distinct distal elongation and/or at least distinctly broadened at the base. Males of C. elaensis Bilyj, 1989 have acute anal points, but are relatively broad and surrounded with a microtrichia-free area at the base; in C. tribelus Bilyj, 1989 the anal point is narrow and parallel-sided but moderately long (Bilyj & Davies 1989; figs 6, 8). As far as the general shape of the anal point is concerned, there is a slight resemblance between the males of C. fusiformis Bilyj, 1989 and those of C. bilyji; although these two species can be easily separated also by the shape of the superior volsella, which in the former is nearly half as long as the digitus, and the median volsella has a smaller number of lamellae (cf. Fig. 3 and Bilyj & Davies 1989, fig. 4). Originally, C. fusiformis was also compared with C. nigrovittatus (Goetghebuer, 1922). The latter species is presumed to be the closest relative of C. bilyji (see the key below). Finally, the males of C. mancus (Walker, 1856) [or the C. mancus group sensu Giłka (2001)], often misidentified with C. nigrovittatus, should also be included in this comparison. They differ in the length proportions of the median volsella stem-lamellae (the stem longer relative to its lamellae in C. bilyji), the number of lamellae (greater in C. bilyji), and the arrangement of median setae on the anal tergite (dispersed in C. mancus)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on pages 347-350, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Bilyj, B. & Davies, I. J. (1989) Descriptions and ecological notes on seven new species of Cladotanytarsus (Chironomidae: Diptera) collected from an experimentally acidified lake. Canadian Journal of Zoology, 67, 948 - 962. https: // doi. org / 10.1139 / z 89 - 138","Goetghebuer, M. (1922) Nouveaux materiaux pour l'etude de la fauna de Chironomides de Belgique. Annales de Biologie Lacustre, 11, 38 - 62.","Gilka, W. (2001) A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species. Polish Journal of Entomology, 70, 307 - 328."]}

Cladotanytarsus stylifer Giłka Cladotanytarsus stylifer Giłka, 2015: Giłka & Dobosz 2015: 128 (adult male, New Caledonia). Material examined. Holotype (Giłka & Dobosz 2015). Remarks. This species was recently described in detail as an adult male and compared with Cladotanytarsus bilinearis, C. conversus and C. isigacedeus (Giłka & Dobosz 2015, table 2)., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on pages 355-356, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Gilka, W. & Dobosz, R. (2015) A contribution to the systematics of Australasian Tanytarsini (Diptera: Chironomidae): first descriptions from New Caledonia. Zootaxa, 3980 (1), 127 - 135."]}

Key to adult males with elongated hypopygial anal points of the subgenus Cladotanytarsus s. str. 1. Stem of median volsella bearing furcate/branched lamellae (Figs 1 E, 3E, 4E, 5B, D)......... Cladotanytarsus Kieffer... 2 -. Median volsella never as above................................................... other Tanytarsini...not keyed 2. Apices of middle and hind leg tibiae without stout lobes armed with dense setae but with fan-shaped combs, at least one comb bearing spur (Kikuchi & Sasa 1990, fig. 20d, e; Giłka 2001, fig. 1f; Jacobsen & Bilyj 2007, fig. 4; Giłka 2009a, figs 11, 12). Inferior volsella never with globular swelling ventrally, with knee-shaped extension at most (Figs 1 B, F, 3A, B, F, 4A, B, F, 5B, D; Giłka & Dobosz 2015, fig. 1d).....................................subgenus Cladotanytarsus s. str. Kieffer.... 3 -. Apices of middle and hind leg tibiae bearing stout lobes armed with dense setae, combs and spurs vestigial if present (Giłka 2011b, figs 2c, d, 4b–e, 5, 8, 11, 12: b, c). Inferior volsella bearing distinct globular swelling ventrally (Giłka 2011b, figs 2h, 4k, 5g, 8g, 11g, 12h)................................................... subgenus Lenziella Kieffer... not keyed 3. Anal point with longitudinal bar (Reiss 1991, fig. 2)........................................ C. ecristatus (Morocco) -. Anal point without longitudinal bar...................................................................... 4 4. Stem of median volsella shorter than its lamellae or stem and lamellae of similar length (Figs 4 B, E, 5B; Glover 1973, fig. 2 4b; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1e; Giłka 2009a, fig. 16; Giłka & Dobosz 2015, fig. 1c)................5 -. Stem of median volsella distinctly longer than its lamellae (Figs 1 B, E, 3B, E, 5D; Jacobsen & Bilyj 2007, fig. 5)....... 13 5. Anal point in shape of elongated arrow, evenly tapering to pointed apex (Glover 1973, fig. 24a; Kikuchi & Sasa 1990, fig. 21c; Sasa & Suzuki 2000, fig. 3i –k; Giłka 2009a, fig. 13), exceptionally truncate (Glover 1973, fig. 24d)................... 6 -. Anal point with parallel-sided distal elongation and/or apically blunt/rounded (Figs 4 A, C, 5A; Langton & Garcia 2000, figs 1a, 2a, b; Langton & McBean 2010, figs 1–3; Giłka & Dobosz 2015, fig. 1a, b; NMNS 200:070) otherwise broad at base (Giłka 2001, fig. 1b, c)...................................................................................... 9 6. Spinulae absent.......................................................................................7 -. Spinulae present..................................................................................... 8 7. Anal point darkly pigmented, black or dark brown; gonostyli slender (Giłka 2009a, fig. 13)................................................................................................... C. sagittifer (United Arab Emirates) -. Anal point ordinarily coloured; gonostyli stout (Glover 1973, fig. 24)......................... C. bilinearis (Australia) 8. Inferior volsella cuneiform, evenly tapering to narrow apex (Kikuchi & Sasa 1990, fig. 21f & NMNS 199:018)........................................................................................ C. tobaquindecimus (Sumatra) -. Inferior volsella parallel-sided, with broadly rounded apex (Sasa & Suzuki 2000, fig. 3p, q & NMNS 385:002)............................................................................................... C. isigacedeus (Japan) 9. Inferior volsella with distinct lateral knee-shaped extension at base (Giłka & Dobosz 2015, fig. 1a, d)................................................................................................. C. stylifer (New Caledonia) -. Inferior volsella without distinct lateral knee-shaped extension at base (Figs 4 A, B, F, 5A, B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1b; Langton & McBean 2010, fig. 1)....................................................... 10 10. Inferior volsella slender at base (Fig. 5 A, B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1b). Stem of median volsella slender, bearing 3–4 branched lamellae, stem and its lamellae of similar length (Fig. 5 B; Langton & Garcia 2000, fig. 1a; Giłka 2001, fig. 1e)....................................................................................... 11 -. Inferior volsella strongly broadened at base (Fig. 4 B, F; Langton & McBean 2010, fig. 1). Stem of median volsella stocky, bearing 6–7 branched lamellae, the longest lamella longer than its stem (Fig. 4 B, E; Langton & McBean 2010, figs 1, 4). 12 11. Anal point narrow at base, rounded apically or club-shaped (Fig. 5 A; Langton & Garcia 2000, figs 1a, 2a, b; NMNS 200:070).................................................................................. C. conversus (Eurasia) -. Anal point broad at base, distal elongation pointed (Giłka 2001, fig. 1b, c)......................... C. cyrylae (Europe) 12. Spinulae absent, tip of digitus hooked (Langton & McBean 2010, figs 1–3)................ C. donmcbeani (Great Britain) -. Spinulae usually present, digitus straight (Fig. 4 A, C, D)................................. Cladotanytarsus sp. (USA) 13. Crests of anal point very thin or not developed (Fig. 1 A, C; Jacobsen & Bilyj 2007, figs 5–7). Acrostichal setae usually absent.................................................................................. C. acornutus (Nearctic) -. Crests of anal point well-developed (Figs 3 A, C, 5C; Bilyj & Davies, fig. 7). Acrostichal setae always present...........14 14. Median volsella with 2–3 weak branched lamellae; inferior volsella without distinct lateral knee-shaped extension at base or angular dorsomedian ridge (Bilyj & Davies, fig. 7). Small species, wing length ca. 1.2–1.4 mm..... C. muricatus (Canada) -. Median volsella with 6–7 strong branched lamellae (Figs 3 B, E, 5D); inferior volsella with distinct lateral knee-shaped extension at base and well-developed angular dorsomedian ridge (Figs 3 A, B, F, 5D). Species moderate in size, wing length ca. 1.5– 2.5 mm.............................................................................................15 15. Superior volsella slender, slightly swollen distally, covered with sparse microtrichia on basal part dorsally (Fig. 3 A, D). Lamellae of median volsella slightly curved, arranged evenly on median and apical part of stem (Fig. 3 B, E)... C. bilyji (Nearctic) -. Superior volsella broad at base, tapering towards tip, covered with dense microtrichia on proximal 2/3 part (Fig. 5 C; Giłka 2001, fig. 7b, d). Lamellae of median volsella strongly curved, densely placed on apical part of stem (Fig. 5 D; Giłka 2001, fig. 7e)........................................................................... C. nigrovittatus (Holarctic)

Cladotanytarsus viridiventris (Malloch) Tanytarsus viridiventris Malloch, 1915: Malloch 1915: 491 (adult male; USA, Michigan).? Cladotanytarsus viridiventris (Malloch, 1915): Oliver et al. 1990: 56 (in catalogue, distribution); Bilyj & Davies 1989: 949 (pupa, in key); Giłka 2011b: 24 (remarks). Remarks. The specific name has so far presumably been erroneously and repeatedly ascribed to various species (Giłka 2011b; J. Sublette, pers. comm.), and a subgeneric placement for Cladotanytarsus viridiventris cannot not be defined with certainty. For this reason it is not included in the present key. Nevertheless, a male specimen originally illustrated, having an elongate anal point and a long stem of the median volsella (Malloch 1915, pl. xxxvi, fig. 8), couples with C. acornutus, C. bilyji, C. muricatus or C. nigrovittatus. Following Malloch���s figure, the triangular superior volsella separates C. viridiventris from C. bilyji and C. muricatus, and the relatively short digitus and apically rounded inferior volsella from all the species compared., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 350, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Malloch, J. R. (1915) The Chironomidae, or midges, of Illinois, with particular reference to the species occurring in the Illinois river. Bulletin of the Illinois State Laboratory of Natural History, 10, 275 - 543. Avaliable from: http: // www. biodiversitylibrary. org / bibliography / 9255 / summary (Accessed 9 Mar. 2017)","Oliver, D. R., Dillon, M. E. & Cranston, P. S. (1990) A catalog of Nearctic Chironomidae. Research Branch Agriculture Canada Publication, 1857 / B, 1 - 89.","Bilyj, B. & Davies, I. J. (1989) Descriptions and ecological notes on seven new species of Cladotanytarsus (Chironomidae: Diptera) collected from an experimentally acidified lake. Canadian Journal of Zoology, 67, 948 - 962. https: // doi. org / 10.1139 / z 89 - 138","Gilka, W. (2011 b) Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini). Zootaxa, 3100, 1 - 34."]}

Cladotanytarsus donmcbeani Langton et McBean Cladotanytarsus donmcbeani Langton et McBean, 2010: Langton & McBean 2010: 109 (adult male, pupa; Great Britain). Remarks. Our laboratory colleague, Marta Zakrzewska, attempted to collect Cladotanytarsus donmcbeani on the shores of Loch Leven, Scotland (locus typicus; Langton & McBean 2010, see also fig. 9), at the turn of April and May 2016. Among several tanytarsine species recorded [Micropsectra atrofasciata (Kieffer, 1911), Paratanytarsus dimorphis Reiss, 1965, Tanytarsus bathophilus Kieffer, 1911, T. pallidicornis (Walker, 1856), T. usmaensis Pagast, 1931)], unfortunately, we did not find this rare midge., Published as part of Puchalski, Mateusz & Gi��ka, Wojciech, 2017, Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA, pp. 344-358 in Zootaxa 4242 (2) on page 353, DOI: 10.11646/zootaxa.4242.2.7, http://zenodo.org/record/376427, {"references":["Langton, P. H. & McBean, S. F. (2010) Cladotanytarsus donmcbeani sp. nov. (Diptera, Chironomidae) from Loch Leven, Kinross-shire, Scotland. Dipterists Digest, 17, 109 - 114."]}

Cladotanytarsus (Cladotanytarsus) stylifer sp. nov., Giłka (Figures 1 and 4 A) Type material. Holotype, adult male: NEW CALEDONIA, La Roque river (south of Poindimi��), 30 m a.s.l., 20 �� 56 ��� 23.06 ��� S / 165 �� 21 ��� 18.77 ��� E, 6 April 2008, at light, leg. R. Dobosz. Derivation of the name. The specific epithet (bearing stylus) refers to the strongly elongate styliform hypopygial anal point. Diagnosis. Anal point styliform, slender and strongly elongate, evenly tapering towards narrowly rounded apex, bearing few spinulae at base and slender crests almost reaching the tip. Superior volsella pear-shaped, with field of microtrichia on proximal half. Digitus extending far beyond superior volsella, apically pointed. Stem of median volsella stout, with 3 strong furcate lamellae. Inferior volsella with distinct lateral knee-like extension at base. Description. Adult male. Small midge, wing length 1065 ��m. Colouration. Eyes black. Tentorium transparent. Head capsule, antennal flagellum, mouthparts, ground colour of thorax, legs and abdomen greenish yellow/pale brown. Wing transparent, with yellowish undertone. Antennal pedicel, scutal stripes, scutellum, postnotum and sternum brown to dark brown. Head. Eyes reniform, broadly separated. Antenna with 13 flagellomeres, AR 0.62; plume fully developed. Frontal tubercles conical, minute, c. 3 ��m long. Lengths of palpomeres 2���5 (in ��m): 35, 77, 93, 155. Clypeus semicircular, with 14 setae. Thorax chaetotaxy. Ac 10, Dc 7, Pa 1, Scts 4. Wing. Shape, venation pattern and chaetotaxy typical for the genus, as shown in Fig. 4 A. Legs. Fore leg tibia with slightly curved spur, c. 15 ��m long. Combs of mid and hind leg tibiae separated, composed of teeth up to 10 ��m long. Mid leg tibia with two spurs: one spur darkly pigmented, straight, c. 15 ��m long, second spur lightly pigmented, sinuous, c. 20 ��m long; hind leg tibia with single dark straight spur, c. 10 ��m long. Basitarsus of mid leg with 2 hook-shaped sensilla chaetica. For lengths of leg segments and leg ratios see Table 1. Hypopygium (Fig. 1). Gonostylus shorter than gonocoxite, c. ��m 60 long, broadest at base, apically rounded. Anal tergite with V-type separated bands and several (5) median setae. Anal point styliform, slender and strongly elongate, evenly tapering towards narrowly rounded apex, bearing few (4) spinulae at base and slender crests almost reaching the tip of anal point (Fig. 1 A, B). Superior volsella slender pear-shaped, broadest at base, narrowed in distal half and slightly swollen apically, bearing field of microtrichia on proximal half, 5 dorsal setae and 3 long setae placed on conical tubercles at base. Digitus straight or slightly curved, long, extending far beyond superior volsella, apically pointed (Fig. 1 A). Stem of median volsella stout, c. 30 ��m long, slightly curved and posteromedially directed, bearing several setiform and 3 strong furcate lamellae (Fig. 1 C, D). Inferior volsella broadest at base, tapering towards apex, with distinct lateral knee-like extension at base and slightly protruding dorsomedian ridge near apex, evenly curved posteromedially (Fig. 1 D). Remarks. At least three morphologically close relatives known from the Australasian and Indo-Pacific Regions should be compared with Cladotanytarsus stylifer to prevent misidentification, i.e.: C. bilinearis Glover, 1973 (South Australia, Queensland), C. conversus (Johannsen, 1932) (southern China, India, Indonesia, Thailand; also Europe) and C. isigacedeus (Sasa et Suzuki, 2000) (Japan, Ishigaki) (Glover 1973, Langton & Garcia 2000, Sasa & Suzuki 2000); the latter species originally ascribed to Tanytarsus and here given in new combination. Adult males of all these species have the similar strongly elongate hypopygial anal point, but the length/shape of the gonostylus, frontal tubercles, the arrangement of spinulae, the shape of hypopygial volsellae and main metric characters allow to separate them, as shown in Table 2. The males of other Cladotanytarsus species known from somewhat similar structure of hypopygium are also European C. cyrylae Giłka, 2001, C. nigrovittatus (Goetghebuer, 1922), and C. sagittifer Giłka, 2009 described from the Arabian Peninsula; however, except the anal point length or its general shape they differ distinctly from species compared above and can be easily determined (cf. Giłka 2009, 2011)., Published as part of Gi��ka, Wojciech & Dobosz, Roland, 2015, A contribution to the systematics of Australasian Tanytarsini (Diptera: Chironomidae): first descriptions from New Caledonia, pp. 127-135 in Zootaxa 3980 (1) on pages 128-130, DOI: 10.11646/zootaxa.3980.1.7, http://zenodo.org/record/233072, {"references":["Glover, B. (1973) The Tanytarsini (Diptera: Chironomidae) of Australia. Australian Journal of Zoology, supplement number 23, 403 - 478. http: // dx. doi. org / 10.1071 / AJZS 023","Sasa, M. & Suzuki, H. (2000) Studies on the chironomid species collected on Ishigaki and Iriomote islands, Southwestern Japan. Tropical Medicine, 42, 1 - 37.","Langton, P. & Garcia, X. - F. (2000) A review of Cladotanytarsus conversus (Johannsen) with first record from Europe (Insecta, Diptera, Chironomidae). Spixiana, 23, 199 - 206."]}

Cladotanytarsus (Cladotanytarsus) stylifer sp. nov., Giłka (Figures 1 and 4 A) Type material. Holotype, adult male: NEW CALEDONIA, La Roque river (south of Poindimié), 30 m a.s.l., 20 ° 56 ’ 23.06 ” S / 165 ° 21 ’ 18.77 ” E, 6 April 2008, at light, leg. R. Dobosz. Derivation of the name. The specific epithet (bearing stylus) refers to the strongly elongate styliform hypopygial anal point. Diagnosis. Anal point styliform, slender and strongly elongate, evenly tapering towards narrowly rounded apex, bearing few spinulae at base and slender crests almost reaching the tip. Superior volsella pear-shaped, with field of microtrichia on proximal half. Digitus extending far beyond superior volsella, apically pointed. Stem of median volsella stout, with 3 strong furcate lamellae. Inferior volsella with distinct lateral knee-like extension at base. Description. Adult male. Small midge, wing length 1065 Μm. Colouration. Eyes black. Tentorium transparent. Head capsule, antennal flagellum, mouthparts, ground colour of thorax, legs and abdomen greenish yellow/pale brown. Wing transparent, with yellowish undertone. Antennal pedicel, scutal stripes, scutellum, postnotum and sternum brown to dark brown. Head. Eyes reniform, broadly separated. Antenna with 13 flagellomeres, AR 0.62; plume fully developed. Frontal tubercles conical, minute, c. 3 Μm long. Lengths of palpomeres 2–5 (in Μm): 35, 77, 93, 155. Clypeus semicircular, with 14 setae. Thorax chaetotaxy. Ac 10, Dc 7, Pa 1, Scts 4. Wing. Shape, venation pattern and chaetotaxy typical for the genus, as shown in Fig. 4 A. Legs. Fore leg tibia with slightly curved spur, c. 15 Μm long. Combs of mid and hind leg tibiae separated, composed of teeth up to 10 Μm long. Mid leg tibia with two spurs: one spur darkly pigmented, straight, c. 15 Μm long, second spur lightly pigmented, sinuous, c. 20 Μm long; hind leg tibia with single dark straight spur, c. 10 Μm long. Basitarsus of mid leg with 2 hook-shaped sensilla chaetica. For lengths of leg segments and leg ratios see Table 1. Hypopygium (Fig. 1). Gonostylus shorter than gonocoxite, c. Μm 60 long, broadest at base, apically rounded. Anal tergite with V-type separated bands and several (5) median setae. Anal point styliform, slender and strongly elongate, evenly tapering towards narrowly rounded apex, bearing few (4) spinulae at base and slender crests almost reaching the tip of anal point (Fig. 1 A, B). Superior volsella slender pear-shaped, broadest at base, narrowed in distal half and slightly swollen apically, bearing field of microtrichia on proximal half, 5 dorsal setae and 3 long setae placed on conical tubercles at base. Digitus straight or slightly curved, long, extending far beyond superior volsella, apically pointed (Fig. 1 A). Stem of median volsella stout, c. 30 Μm long, slightly curved and posteromedially directed, bearing several setiform and 3 strong furcate lamellae (Fig. 1 C, D). Inferior volsella broadest at base, tapering towards apex, with distinct lateral knee-like extension at base and slightly protruding dorsomedian ridge near apex, evenly curved posteromedially (Fig. 1 D). Remarks. At least three morphologically close relatives known from the Australasian and Indo-Pacific Regions should be compared with Cladotanytarsus stylifer to prevent misidentification, i.e.: C. bilinearis Glover, 1973 (South Australia, Queensland), C. conversus (Johannsen, 1932) (southern China, India, Indonesia, Thailand; also Europe) and C. isigacedeus (Sasa et Suzuki, 2000) (Japan, Ishigaki) (Glover 1973, Langton & Garcia 2000, Sasa & Suzuki 2000); the latter species originally ascribed to Tanytarsus and here given in new combination. Adult males of all these species have the similar strongly elongate hypopygial anal point, but the length/shape of the gonostylus, frontal tubercles, the arrangement of spinulae, the shape of hypopygial volsellae and main metric characters allow to separate them, as shown in Table 2. The males of other Cladotanytarsus species known from somewhat similar structure of hypopygium are also European C. cyrylae Giłka, 2001, C. nigrovittatus (Goetghebuer, 1922), and C. sagittifer Giłka, 2009 described from the Arabian Peninsula; however, except the anal point length or its general shape they differ distinctly from species compared above and can be easily determined (cf. Giłka 2009, 2011).

Subgenus: Cladotanytarsus s. str. Kieffer, 1921 Type species: as for the genus., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 3, DOI: 10.5281/zenodo.202994, {"references":["Kieffer, J. J. (1921) Synopse de la tribu des Chironomariae (Dipteres). Annales de la Societe Scientifique de Bruxelles, 40, 269 - 277."]}

Cladotanytarsus (Lenziella) amandus Hirvenoja, 1962 (Figures 4, 15 A) Cladotanytarsus amandus Hirvenoja, 1962: 176 (adult male, fig. 1 b; Finland); Przhiboro & Saether 2011: (adult male, fig. 9; Russia)., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 9, DOI: 10.5281/zenodo.202994, {"references":["Hirvenoja, M. (1962) Cladotanytarsus - Arten (Dipt., Chironomidae) aus Finnisch-Lappand. Annales Entomologici Fennici, 28, 173 - 181.","Przhiboro, A. A., Saether, O. A. (2011) Littoral chironomid communities of two small lakes in northern Karelia (Russia) studied by emergence traps. Contemporary Chironomid Studies. Proceedings of the 17 th International Symposium on Chironomidae, Tianjin, China, pp. 184 - 218."]}

Genus: Cladotanytarsus Kieffer, 1921 Cladotanytarsus Kieffer, 1921: 277. Type species: Cladotanytarsus pallidus Kieffer, 1922 b: 100 (subsequent monotypy)., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 3, DOI: 10.5281/zenodo.202994, {"references":["Kieffer, J. J. (1921) Synopse de la tribu des Chironomariae (Dipteres). Annales de la Societe Scientifique de Bruxelles, 40, 269 - 277.","Kieffer, J. J. (1922 b) Chironomides nouveaux ou peu connus de la rgion palearctique. Annales de la Societe Scientifique de Bruxelles, 42, 71 - 128."]}

Cladotanytarsus (Lenziella) piniger sp. nov. (Figures 11, 15 C) Tanytarsus viridiventris Malloch, 1915: Darby 1962: 39, 101, 175, 177 (misidentification?; biology, USA). Cladotanytarsus viridiventris (Malloch): Bilyj & Davies 1989: 949 (pupa, in key)., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 22, DOI: 10.5281/zenodo.202994, {"references":["Darby, R. E. (1962) Midges associated with California rice fields, with special reference to their ecology (Diptera: Chironomidae). Hilgardia, 32, 1 - 206.","Bilyj, B., Davies, I. J. (1989) Descriptions and ecological notes on seven new species of Cladotanytarsus (Chironomidae: Diptera) collected from an experimentally acidified lake. Canadian Journal of Zoology, 67, 948 - 962."]}

Cladotanytarsus (Lenziella) latissimus sp. nov. (Figures 8���10, 15 F), Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 16, DOI: 10.5281/zenodo.202994

Cladotanytarsus (Lenziella) subletteorum sp. nov. (Figures 12–14, 15 D)

Cladotanytarsus (Lenziella) latissimus sp. nov. (Figures 8–10, 15 F)

Cladotanytarsus (Lenziella) subletteorum sp. nov. (Figures 12���14, 15 D), Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 24, DOI: 10.5281/zenodo.202994

Cladotanytarsus (Lenziella) piniger sp. nov. (Figures 11, 15 C) Tanytarsus viridiventris Malloch, 1915: Darby 1962: 39, 101, 175, 177 (misidentification?; biology, USA). Cladotanytarsus viridiventris (Malloch): Bilyj & Davies 1989: 949 (pupa, in key).

Cladotanytarsus (Lenziella) crusculus (Saether, 1971) (Figures 5���7, 15 E) Lenziella cruscula Saether, 1971: 1825 (adult male, figs 13 f, 14���16; pupa, fig. 17; larva, fig. 18; USA); Saether 1977: 139, 140, 144, 149 (adult female, fig. 66 e���g). Cladotanytarsus (Lenziella) cruscula: Sublette & Sublette 1979: 92 (combination). Cladotanytarsus crusculus: Oliver et al. 1990: 55 (in catalogue)., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 11, DOI: 10.5281/zenodo.202994, {"references":["Saether, O. A. (1971) Four new and unusual Chironomidae (Diptera). Canadian Entomologist, 103, 1799 - 1827.","Saether, O. A. (1977) Female genitalia in Chironomidae and other Nematocera: morphology, phylogenies, keys. Bulletin of the Fisheries Research Board of Canada, 197, 1 - 209.","Sublette, J. E. & Sublette, M. S. (1979) A Synopsis of the Chironomidae of New Mexico. In: Utilization of Chironomidae (Diptera) as a water quality indicator group in New Mexico. Technical Report, part II. New Mexico Energy Institute, 32, 53 - 128.","Oliver, D. R., Dillon, M. E., Cranston, P. S. (1990) A catalog of Nearctic Chironomidae. Research Branch Agriculture Canada, Ottawa, 89 pp."]}

Cladotanytarsus (Lenziella) bicornutus (Kieffer, 1922), comb. nov. (Figures 1 ���3, 15B) Lenziella bicornuta Kieffer, 1922 a: 361 (adult male, Germany); Saether 1971: 1817, 1820, 1824, 1826 (Lenziella cornuta Kieff., incorrect spelling); Ashe & Cranston 1990: 321 (as nomen dubium in Cladotanytarsus). Cladotanytarsus wexionensis Brundin, 1947: 81 (adult male, figs 121, 121 a; Sweden); Brundin 1949: 783 (remarks); Thienemann 1951: 642 (adult male, fig. 7, Germany); Shilova 1976: 32 (adult male, figs 17.2, 19, 20; pupa, figs 10.6, 11.5, 12.5, 15.6; Russia); Albu 1980: 280 (adult male, fig. 189; Romania); Giłka 2001: 326 (adult male, figs 10 a���i, 11 e; Poland); syn. nov., Published as part of Gi��ka, Wojciech, 2011, Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini), pp. 1-34 in Zootaxa 3100 on page 4, DOI: 10.5281/zenodo.202994, {"references":["Kieffer, J. J. (1922 a) Noveaux Chironomides a larves aquatiques. Annales de la Societe Scientifique de Bruxelles, 41, 355 - 367.","Saether, O. A. (1971) Four new and unusual Chironomidae (Diptera). Canadian Entomologist, 103, 1799 - 1827.","Ashe, P., Cranston, P. S. (1990) Family Chironomidae. In: Soos, A. & Papp, L. (eds): Catalogue of Palaearctic Diptera. Volume 2. Psychodidae - Chironomidae. Akademiai Kiado, Budapest, pp. 113 - 355.","Brundin, L. (1947) Zur Kenntnis der Swedischen Chironomiden. Arkiv for Zoologi, 39, 1 - 95.","Brundin, L. (1949) Chironomiden und andere Bodentiere der sudschwedischen Urgebirgseen. Ein Beitrag zur Kenntnis der boden-faunistischen Charakterzuge schwedischen oligotropher Seen. Reports of Institute of Freshwater Research, Drottningholm, 30, 1 - 915.","Thienemann, A. (1951) Chironomiden aus der unteren Peene gesammelt und gezuchtet von Fr. Kruger. Archiv fur Hydrobiologie, supplement 18, 633 - 644.","Shilova, A. I. (1976) Chironomidy Rybinskogo vodochranilisca. Nauka, Leningrad, 250 pp. [in Russian]","Albu, P. (1980) Fam. Chironomidae - subfam. Chironominae. Fauna Republicii Socialiste Romania. Insecta. 11, Diptera 13, 320 pp.","Gilka, W. (2001) A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species."]}

Following the inclusion of Lenziella Kieffer, 1922 into Cladotanytarsus Kieffer, 1921, the genus consists of two subgenera: Cladotanytarsus s. str. (type species: C. pallidus Kieffer, 1922) and Lenziella Kieffer, 1922 (type species: L. bicornuta Kieffer, 1922). Six species of the subgenus Lenziella known from the Holarctic region are diagnosed and reviewed. Lectotype of Cladotanytarsus wexionensis Brundin, 1947 is designated, and the name is treated as a synonym of Cladotanytarsus (L.) bicornutus Kieffer, 1922 in a new combination. Cladotanytarsus (L.) amandus Hirvenoja, 1962 (male) and C. (L.) crusculus (Sæther, 1971) (male, female, pupa) are redescribed. Cladotanytarsus (L.) latissimus sp. nov. (male, female, pupa), C. (L.) piniger sp. nov. (male), and C. (L.) subletteorum sp. nov. (male, female, pupa) are described. Keys to adults and pupae of Lenziella as well as data on biology of the species are presented.

Subgenus: Cladotanytarsus s. str. Kieffer, 1921 Type species: as for the genus.

Cladotanytarsus bisetus sp. n. (Figs. 1���2) Type material. Holotype male (BDN. No. 20282), China, Hainan Province, Ledong County, Chongpo Village. IV. 17.1985. Leg. X. Wang. Sweep net. Paratype male (BDN. No. 20280), data as for holotype. Etymology. From Latin bis, two, and seta, hair, referring to the two basimedial setae on the superior volsella, which is unique in the genus. Diagnosis. This species is characterized by the two basimedial setae on the superior volsella, with no setae between the anal crests on the base of the anal point. Male imago (n = 2). Total length 2.02���2.14 mm. Wing length 1.08���1.36 mm. Total length/wing length 1.57���1.87. Wing length/profemur length 2.25���2.36. Coloration yellowish brown; antenna brown; eyes black. Head. Frontal tubercles present. Ultimate flagellomere 360���400 ��m long. AR 0.91��� 0.92. Temporal setae: 5 inner, 0���1 outer verticals and 2 postorbitals. Clypeus with 12���13 setae. (Tentorium mangled). Palpomere lengths (in ��m): 24���34; 25���36; 62���70; 86���92; 132���156. Wing (Fig 1). VR 1.28���1.34 and Cu length 510���656 ��m. Macrotrichia on membrane: R 4 + 5 24���37; M 1 + 2 3���29. Setae on veins: R 1���16; R 4 + 5 1���14; M 1 + 2 11���36. R 1 with 13 and M 3 + 4 with 8 setae in holotype, but without setae in paratype. Thorax. Acrostichals 1���3; dorsocentrals 4���5; prealars 1. Scutellum with 0���1 setae. Legs. Spur of front tibia 18 ��m. Spurs of middle tibia 22 and 13���20 ��m long, and of hind tibia 28���30 and 22���24 ��m long. Combs of middle leg composed of 8���14 and 10���11 free teeth, of hind leg composed of 10���14 and 8���12 free teeth. Lengths and proportion of legs (in ��m): Hypopygium (Fig 2). Anal point 37���40 ��m long, with 24���26 spinules and with 11���13 ventrolateral setae. Phallapodeme 70���90 ��m long. Transverse sternapodeme 60���68 ��m long. Gonocoxite 98���100 ��m long. Superior volsella 30���36 ��m long, with 4 dorsal setae and 2 basimedial setae. Digitus 23���32 ��m, bent at middle and with narrower rounded apex. Inferior volsella 40���44 ��m long. Stem of median volsella 28���40 ��m long and with apical lamellae extending beyond inferior volsella. Gonostylus 64 ��m long. HR 1.53���1.56; HV 3.16���3.34. Distribution. This species is known from Hainan Province of southern China (Oriental region). Remarks. The two basimedial setae of the superior volsella and the absence of setae between the anal crests on the base of the anal point indicate that this is a new species., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on pages 2-3, DOI: 10.5281/zenodo.158140

Cladotanytarsus pseudomancus (Goetghebuer) (Fig. 13) Tanytarsus pseudomancus Goetghebuer 1934: 200 Tanytarsus (Cladotanytarsus) pseudomancus Goetghebuer; Freeman 1958: 348 (Fig. 14 a) Cladotanytarsus pseudomancus (Goetghebuer); Cranston & Judd 1989: 266 (Fig. 54), Wang & Zheng 1993: 6 (Figs. 8, 9) Material examined. 4 males (BDN. No. 0 4801, 0 4802, 0 4804, 04795), China, Hainan Province, Jianfengling Natural Conservation. V. 15.1988. Leg. Wang. 2 males (BDN. No. 0 24, 025), Hainan Province, Bawangling Natural Conservation.. V. 11.1988. Leg. Wang. Light trapped. 4 males (BDN. No. 0 20, 0 21, 0 22, 023), Hainan Province, Diaoluo County. V. 20.1988. Leg. Wang. Light trap. 3 males (BDN. No. 0 26, 0 27, 028), Hainan Province, Dongzhaigang, Mangrove Natural Conservation. V. 22.1988. Leg. Wang. 1 male (BDN. No. 20281), China, Hainan Province, Ledong County, Chongpo village. IV. 17.1985. Leg. Wang. Diagnosis. Spinules of anal point 25. Abdomen banded. Superior volsella and digitus long. Male imago (n = 14) Total length 1.78���2.34 mm, 2.05 mm. Wing length 0.96���1.12 mm, 1.04 mm. Total length/wing length 1.82���2.15, 1.98. Wing length/profemur length 2.00��� 2.41, 2.08. Ground coloration pale or yellowish green, with brown vittae and metanotum. Antenna and wing light brown. Head. Ultimate flagellomere 288���368 ��m, 338 ��m long. AR 0.78���0.94, 0.87. Temporal setae including 4 ���8, 5 inner, 0���3, 1 outer verticals and 0���2, 1 postorbitals. Clypeus with 9 ���13, 10 setae. Tentorium 95���110 ��m, 105 ��m long, width 20���30 ��m, 24 ��m. Palpomere lengths (in ��m): 20 ���28, 24; 20 ���30, 26; 54 ���70, 63; 70 ���88, 78; 116���146, 128. Wing. VR 1.16���1.31, 1.26 and Cu length 496���560 ��m, 524 ��m. Macrotrichia on membrane: R 4 + 5 10 ���31, 25; M 1 + 2 2 ���14, 7; on veins: R 1 ���9, 4; R 4 + 5 1 ���3, 2; M 1 + 2 3 ���19, 14. Thorax. Acrostichals 0���4, 2; dorsocentrals 4 ���8, 5; prealars 0���2, 1. Scutellum with 0��� 5, 2 setae. Legs. Spur of front tibia 12���22 ��m, 18 ��m. Spurs of middle tibia 18���24 ��m, 21 ��m and 14���22 ��m, 19 ��m long, and of hind tibia 18���30 ��m, 27 ��m and 14���23 ��m, 19 ��m long. Combs of middle leg composed of 7 ���12, 10 and 7 ���12, 10 free teeth, of hind leg composed of 7 ���14, 10 and 8 ���12, 11 free teeth. Lengths and proportion of legs (in ��m): Hypopygium (Fig. 13) Anal point 26���44 ��m, 35 ��m long. Phallapodeme 80���94 ��m, 84 ��m long. Transverse sternapodeme 50���70 ��m, 59 ��m long. Gonocoxite 100���112 ��m, 106 ��m long. Superior volsella 24���32 ��m, 28 ��m long. Digitus 16���24 ��m, 21 ��m long. Inferior volsella 34���50 ��m, 41 ��m long. The stem of median volsella 22���30 ��m, 28 ��m long. Gonostylus 62���70 ��m, 67 ��m long. HR 1.43���1.81, 1.58; HV 2.70���3.44, 3.05. Distribution. This species is widely distributed in the Afrotropical Region and is also known from the Palaearctic and Oriental Regions., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on pages 13-14, DOI: 10.5281/zenodo.158140, {"references":["Goetghebuer, M. (1934) Ceratopogonidae et Chironomides du Congo Belge (deuxieme note). Revue de Zoologie et de Botanique Africanies, 25, 191 - 205.","Cranston, P. S. & Judd, D. D. (1989) Diptera: Fam. Chironomidae of the Arabian Peninsula. Fauna of Saudi Arabia, 10, 236 - 289.","Wang, X. & Zheng, L. (1993) A taxonomic study on Chironominae from China. V. Genus Cladotanytarsus Kieffer, 1921 (Diptera: Chironomidae). Zeitschrift fur Entomology, 14, 1 - 12."]}

Key to males of Cladotanytarsus from China 1 Frontal tubercles present............................................................................................... 2 – Frontal tubercles absent............................................................................................... 7 2 Anal point short and tapering; spinules absent (Fig. 3; Langton & Garcia 2000: Figs. 1–6; Wang & Zheng 1993: Figs. 12, 13) ................................ C. conversus (Johannsen) – Anal point spinules present........................................................................................... 3 3 Spinules of anal point less than 5 (Fig. 8; Lindeberg 1964: Fig. 3; Wang & Zheng 1993: Figs. 10, 11) .......................................................... C. nigrovittatus (Goetghebuer) – Spinules of anal point more than 15.............................................................................. 4 4 Abdomen banded; apex of digitus pointed (Fig. 13; Freeman 1958: Fig. 14 a; Cranston & Judd 1989: Fig. 54; Wang & Zheng 1993: Figs. 8, 9)................................................. ..................................................................................... C. pseudomancus (Goetghebuer) – Abdomen not banded.................................................................................................... 5 5 Base of anal point between anal crests without setae (Figs. 1, 2) ......... C. bisetus sp. n. – Base of anal point between anal crests with setae......................................................... 6 6 Digitus bent, with pointed apex (Fig. 7; Wang & Zheng 1993: Figs. 6, 7).................................................................................................................. C. frontalis Wang & Zheng – Digitus elongate, with blunt apex (Fig. 14; Albu 1980: Fig. 188; Brundin 1947: Fig. 120; Edwards 1929: Fig. 15 g, Plate XIX, Fig. 16; Wang & Zheng 1993: Figs. 14, 15). ............................................................................................... C. vanderwulpi (Edwards) 7 Anal point slender; superior volsella not elongate (Fig. 9; Wang & Zheng 1993: Fig. 5) ............................................................................................ C. palmatus Wang & Zheng – Anal point broad; superior volsella elongate................................................................. 8 8 Apex of digitus dilated.................................................................................................. 9 – Apex of digitus narrower............................................................................................. 10 9 Anal point with 2 spinules (Fig. 4; Wang & Zheng 1993: Figs. 5, 6)............................ .............................................................................................. C. digitalis Wang & Zheng – Anal point with more than 20 spinules and with about 10 ventrolateral setae (Figs. 5, 6) ................................................................................................................ C. dilatus sp. n. 10 Anal point with 2 basally joined spinules (Fig. 15; Wang & Zheng 1990: Fig. 1)........ ....................................................................................... C. yunnanensis Wang & Zheng – Anal point with more than 5 small, scattered spinules................................................ 11 11 Superior volsella with bent apex and 2 basimedial setae (Fig. 12; Wang & Zheng 1993: Fig. 2) ..................................................................................... C. parvus Wang & Zheng – Apex of superior volsella not bent and with 1 basimedial seta (Figs. 10, 11)..................................................................................................................... C. paratridorsum sp. n.

Cladotanytarsus parvus Wang & Zheng (Fig. 12) Cladotanytarsus parvus Wang & Zheng 1993: 2 (Figs. 1, 2) Material examined. Holotype male (04819), China, Guangdong Province, Fengkai County, 23.4 ��N / 111.4 ��E, IV. 20.1988. Leg. X. Wang. Diagnosis. Apex of superior volsella bent. Digitus tapering to pointed apex. Anal point tapering gradually to pointed apex and with 5 scattered spinules between crests. The species was described in detail by Wang & Zheng 1993: 2 (Figs. 1, 2). Additional description of wing: Macrotrichia on membrane: R 4 + 5 80; M 1 + 2 72; M 3 + 4 12. Setae on veins: R 4 + 5 30; M 1 + 2 29; M 3 + 4 8; Cu 1 6. R and R 1 with setae but difficult to count. Distribution. The species is known from Guangdong Province (Oriental China)., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on page 13, DOI: 10.5281/zenodo.158140, {"references":["Wang, X. & Zheng, L. (1993) A taxonomic study on Chironominae from China. V. Genus Cladotanytarsus Kieffer, 1921 (Diptera: Chironomidae). Zeitschrift fur Entomology, 14, 1 - 12."]}

Cladotanytarsus yunnanensis Wang & Zheng (Fig. 15) Cladotanytarsus yunnanensis Wang & Zheng 1990: 480 (Fig. 1), Wang & Zheng 1993: 7 (Fig. 16) Material examined. Holotype male (04810), China, Yunnan Province, Kunming, Dianchi Lake, V. 23.1986. Leg. X. Wang. Paratype male (04811), data as for holotype. Diagnosis. The anal point has 2 basally joined tooth���shaped spinules. The superior volsella is elongate with a bent apex, and the digitus tapers to a pointed apex. The species was described in detail by Wang & Zheng 1990: 480 (Fig. 1). Additional description of wing: Macrotrichia covering most of membrane, present on all veins except M and Cu. Number of setae on membrane: R 4 + 5 216���224; M 1 + 2 192���198; M 3 + 4 67���69; An 56���62. Number of setae on veins: R 23���24; R 1 18���19; R 4 + 5 28���30; M 1 + 2 58���60; M 3 + 4 33���36; Cu 1 26���27; An 24���28. Distribution. This species is known from Yunnan Province (Oriental China)., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on page 16, DOI: 10.5281/zenodo.158140, {"references":["Wang, X. & Zheng, L. (1990) A new species of the genus Cladotanytarsus from China (Diptera: Chironomidae). Acta Zootaxonomica Sinica, 15, 480 - 482.","Wang, X. & Zheng, L. (1993) A taxonomic study on Chironominae from China. V. Genus Cladotanytarsus Kieffer, 1921 (Diptera: Chironomidae). Zeitschrift fur Entomology, 14, 1 - 12."]}

Key to males of Cladotanytarsus from China 1 Frontal tubercles present............................................................................................... 2 ��� Frontal tubercles absent............................................................................................... 7 2 Anal point short and tapering; spinules absent (Fig. 3; Langton & Garcia 2000: Figs. 1���6; Wang & Zheng 1993: Figs. 12, 13) ................................ C. conversus (Johannsen) ��� Anal point spinules present........................................................................................... 3 3 Spinules of anal point less than 5 (Fig. 8; Lindeberg 1964: Fig. 3; Wang & Zheng 1993: Figs. 10, 11) .......................................................... C. nigrovittatus (Goetghebuer) ��� Spinules of anal point more than 15.............................................................................. 4 4 Abdomen banded; apex of digitus pointed (Fig. 13; Freeman 1958: Fig. 14 a; Cranston & Judd 1989: Fig. 54; Wang & Zheng 1993: Figs. 8, 9)................................................. ..................................................................................... C. pseudomancus (Goetghebuer) ��� Abdomen not banded.................................................................................................... 5 5 Base of anal point between anal crests without setae (Figs. 1, 2) ......... C. bisetus sp. n. ��� Base of anal point between anal crests with setae......................................................... 6 6 Digitus bent, with pointed apex (Fig. 7; Wang & Zheng 1993: Figs. 6, 7).................................................................................................................. C. frontalis Wang & Zheng ��� Digitus elongate, with blunt apex (Fig. 14; Albu 1980: Fig. 188; Brundin 1947: Fig. 120; Edwards 1929: Fig. 15 g, Plate XIX, Fig. 16; Wang & Zheng 1993: Figs. 14, 15). ............................................................................................... C. vanderwulpi (Edwards) 7 Anal point slender; superior volsella not elongate (Fig. 9; Wang & Zheng 1993: Fig. 5) ............................................................................................ C. palmatus Wang & Zheng ��� Anal point broad; superior volsella elongate................................................................. 8 8 Apex of digitus dilated.................................................................................................. 9 ��� Apex of digitus narrower............................................................................................. 10 9 Anal point with 2 spinules (Fig. 4; Wang & Zheng 1993: Figs. 5, 6)............................ .............................................................................................. C. digitalis Wang & Zheng ��� Anal point with more than 20 spinules and with about 10 ventrolateral setae (Figs. 5, 6) ................................................................................................................ C. dilatus sp. n. 10 Anal point with 2 basally joined spinules (Fig. 15; Wang & Zheng 1990: Fig. 1)........ ....................................................................................... C. yunnanensis Wang & Zheng ��� Anal point with more than 5 small, scattered spinules................................................ 11 11 Superior volsella with bent apex and 2 basimedial setae (Fig. 12; Wang & Zheng 1993: Fig. 2) ..................................................................................... C. parvus Wang & Zheng ��� Apex of superior volsella not bent and with 1 basimedial seta (Figs. 10, 11)..................................................................................................................... C. paratridorsum sp. n., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on page 17, DOI: 10.5281/zenodo.158140, {"references":["Langton, P. H. & Garcia, X. F. (2000) A review of Cladotanytarsus conversus (Johannsen) with first records from Europe (Insect, Diptera, Chironomidae). Spixiana, 23 (2), 199 - 206.","Wang, X. & Zheng, L. (1993) A taxonomic study on Chironominae from China. V. Genus Cladotanytarsus Kieffer, 1921 (Diptera: Chironomidae). Zeitschrift fur Entomology, 14, 1 - 12.","Lindeberg, B. (1964) The swarm of males as a unit for taxonomic recognition in the chironomids (Diptera). Annales Zoologici Fennici, 1, 72 - 76.","Cranston, P. S. & Judd, D. D. (1989) Diptera: Fam. Chironomidae of the Arabian Peninsula. Fauna of Saudi Arabia, 10, 236 - 289.","Albu, P. (1980) Diptera. fam. Chironomidae-Subfam. Chironominae. Fauna Republic Socialist Romania Insecta, 11 (13), 1 - 320.","Brundin, L. (1947) Zur Kenntnis der schwedischen Chironomiden. Arkiv fur Zoologie, 39 (3), 1 - 95.","Wang, X. & Zheng, L. (1990) A new species of the genus Cladotanytarsus from China (Diptera: Chironomidae). Acta Zootaxonomica Sinica, 15, 480 - 482."]}

Cladotanytarsus palmatus Wang & Zheng (Fig. 9) Cladotanytarsus palmatus Wang & Zheng 1993: 4 (Fig. 5) Material examined. Holotype male (04817), China, Hainan Province, Xinglong, 18.7 ��N / 110.1 ��E, V. 21.1988. Leg. X. Wang. Diagnosis. Anal point short, with apex sharp. Superior volsella slightly rectangular. Digitus extremely slender, with apex pointed. Median volsella with palmate apex. This species was described in detail by Wang & Zheng 1993: 4 (Fig. 5). Additional description of wing: Macrotrichia on membrane cell: R 4 + 5 65; M 1 + 2 62; M 3 + 4 3. On veins: R 10; R 4 + 5 10; M 1 + 2 26; M 3 + 4 7. Distribution. The species is known from Hainan Province (Oriental China)., Published as part of Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), pp. 1-19 in Zootaxa 750 on pages 10-11, DOI: 10.5281/zenodo.158140, {"references":["Wang, X. & Zheng, L. (1993) A taxonomic study on Chironominae from China. V. Genus Cladotanytarsus Kieffer, 1921 (Diptera: Chironomidae). Zeitschrift fur Entomology, 14, 1 - 12."]}