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To better understand the diversity and phylogeny of Perlodidae, we sequenced and annotated the complete mitochondrial genome (mitogenome) of Arcynopteryx dichroa. This mitogenome was 16,215 bp long and encoded 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), 2 ribosomal RNA unit genes (rRNAs), and a control region like other plecopteran. The nucleotide composition of A. dichroa mitochondrial genome obviously biases toward A and T. The A + T content of the whole mitochondrial genome, the PCGs, tRNAs, rRNAs, and the control region were: 69.3%, 67.6%, 69.8%, 71.3%, and 78.7%. Phylogenetic relationship based on the concatenated sequences of 13 PCGs and two ribosomal RNAs showed that the family Perlodidae and Chloroperlidae are sister relationship, family Perlidae being the sister group to the clade (Perlodidae + Chloroperlidae). The monophyly of the family Perlodidae is well supported but the subfamily Perlodinae and Isoperlinae are not monophyletic groups.

In this study, we analysed the diet of two populations of Perlodes intricatus (Pictet, 1841) inhabiting river sections characterised by different environmental quality. Macrobenthic communities and...

Materials on the aquatic invertebrate fauna in the Maly Patok River basin (the western slopes of the Subpolar Urals) have been presented. These water bodies, which maintain the natural hydrological regime, are located on the territory of the Yugyd-Va National Park. A total of 108 taxa (except for Chironomidae) in the zoobenthos samples and the invertebrate qualitative collections taken in the summer periods in 1996, 2000–2007, and 2017 are identified. Among them, amphibiotic insects prevail in the watercourses, while oligochaetes and mollusks dominate in the lakes in regards to number of species. Mayflies of the families Baetidae and Heptageniidae, stoneflies of Perlodidae, caddisflies of Rhyacophilidae and Apataniidae, and the Elmidae beetles are mostly present in the rivers. Oligochaetes of Naididae and mollusks of the families Planorbidae and Sphaeriidae are most abundant and diverse in the lakes. The most frequent species have Palearctic (29.0%) and Holarctic (25.5%) habitat ranges. In addition to the widespread European species, some species are recorded that have the largest part of their ranges in Siberia. Rare species in the fauna composition have been revealed.

The larva of the Balkan microendemic Isoperla vevcianensis Ikonomov, 1980 (Plecoptera: Perlodidae: Isoperlinae) is described on the basis of larvae associated with adults by means of cox1 sequences similarities. Eggs and everted penis of the male are described for the first time. The larva possessed blunt paraprocts which were previously sharp among Palaearctic larvae of this huge Holarctic and Oriental genus. The commonly pointed paraproct remains as the only distinguishing generic character for the morphologically diverse larvae of Palaearctic Isoperla, but should not be considered as an exclusive character state for the genus. Morphological characters are illustrated in comparison with the sympatric larvae of the Isoperla tripartita species complex.

Isoperla vevcianensis Ikonomov, 1980 (Figs. 1���27) Isoperla vevcianensis Ikonomov, 1980 ��� Ikonomov 1980: 26. (original description of the male, female and larva); Mur��nyi 2011: 21. (redescription of the male). Type locality: North Macedonia, small streams above Vevchani, at elevations 1100, 1300 and 1450 m (Jablanica Mts). N ew records: NORTH MACEDONIA: Southwestern region, Jablanica Mts, Labuni��ta, open brook W of the city, 1905 m, N 41�� 16.069��� E 20�� 31.242���, 26.vi.2014, leg. P��ter Juh��sz, Tibor Kov��cs, D��vid Mur��nyi: 5♂ 1♀, 2 larvae (HNHM: PLP 4840), 7♂ 5♀, 1 larva (MM). Diagnosis. Both adult and larva with large head. Male medial penial armature with upper part trapezoid, lower part rounded to rounded triangular, lateral armatures lacking. Egg oval, with marked ornamentation of FCIs, collar with slightly flanged rim. Larva with pronotum half as long as wide, lacinia trapezoid shaped, paraproct blunt with widely rounded apex, cercus lacks dorsal hair fringe. Description of the larva: Body length of the mature larva: 16.0���18.0 mm (n=3). General colour brown, with indistinct paler markings on the dorsum and pale ventral aspect (Figs. 1, 3���4). Pilosity usual for the genus, consists of fine black clothing hairs and acute marginal spines. Occipital row dense, medially interrupted only at the occipital suture (Figs. 1, 9���10); pronotal marginal fringe distinct, longest spines are as long as one tenth of pronotal width (Figs. 1, 12); posterior tergal fringe with acute spines nearly half as long as tergal length on tergum 5 (Figs. 3, 13); cercal apical fringes dense but short and acute, on medial cercomeres most are shorter than one sixth of the length of segments but one or two spines of the fringe reach about one third of the length (Fig. 14); dorsal hair fringe lacking from the entire cercus (Figs. 7, 14). Head mostly brown and lacks interocellar spot, yellow markings limited to a small spot on the occipital suture, tentorial callosities and M-line; occipital rugosities and lateral occipital spots obscure; eyes small, the head is rather wide and frontal area slightly elongated (Fig. 1). Scape and apical half of pedicel brown, following antennomeres paler; palpi and mouthparts light brown, with dark edges on the maxilla and mandible (Fig. 11). Lacinia bidentate, wide trapezoid shaped; subapical tooth more than half of the length of apical tooth; submarginal row with one A seta interrupted from three B setae, the last one is being much shorter than previous two; one thin marginal seta (TMS) and one dorsal seta (DS) present; 9���11 marginal setae (C) initially widely spaced, last few shorter and closer, difficult to differentiate from dorsal surface setae; 12���16 ventral surface setae (D) starting from submarginal setae B, ending posteriorly at approximately four fifth of the inner lacinia margin length; dorsal surface setae (DSS) continue from last marginal seta (C) as a single submarginal row along inner-lateral margin, ending before posteriormost ventral surface setae (Figs. 15, 17, 19). Galea with 6���10 surface setae and 3���4 apical setae, basally slightly swollen, reaching base of apical tooth (Figs. 15, 17, 19). Mandible with three molars and three incisor dens, molar brush dense and long (Figs. 16, 18, 20). Pronotum short and slightly narrower than head, length half of width; brown with indistinct paler rugosities (Fig. 1). Mesonotum and metanotum mostly brown with indistinct pale brown pattern, wingpads paler; outer margin of wingpads nearly straight (Fig. 1). Thoracic sternites entirely pale, furcasternites and furcal pits large and slightly darker (Fig. 4). Legs entirely brown, tarsal claw lengths equal (Figs. 1, 3). Abdomen divided laterally by pleura in the first two segments; abdominal terga brown with moderately distinct, paired oval pale patch medially (Figs. 3, 13). Ventral surface of abdomen pale, the distal segments slightly darker. Paraprocts brown, large and blunt, apex widely rounded (Figs. 5, 7). Cercus light brown to brown, cercomeres cylindrical; medial cercomeres twice as long as wide (Fig. 14). Updated characters of the male: Paraprocts dark brown, blunt, wide and slightly recurved in dorsal view (Fig. 63 in Mur��nyi (2011)). In caudal view, the base is wide and bears only a very small membranous portion; apex bluntly triangular, inner edge slightly sinuous (Fig. 22). Penis (Fig. 21): Divided into four lobes and a tubular basal section when extruded, lateral lobes poorly developed. The medial penial armature is divided into an upper and a lower part, lateral penial armatures lacking. Lower part of the medial armature located on the ventral lobe, upper part is on the medial lobe between the vestigial lateral lobes. The upper part of medial armature trapezoidal, tapered towards basal section; length 350 ��m, width 200 ��m. The lower part of medial armature is rounded triangular or rounded, length 200 ��m, width 220 ��m. The scales are spike-like, all of the same width, but those on the lower part are less dense, and generally shorter; width 15 ��m, length 30���100 ��m. The ventral lobe is small and weakly separated from the basal section, mostly aspinulate besides bearing the lower part of medial armature; spike-like coloured scales of the armature gradually turn into colourless triangular scales basolaterally, triangular scales continued on the basal section. The medial lobe is large and spherical, bearing the upper part of medial armature; upper edge of the armature transitioning into colourless triangular scales, then rapidly transitioning into hydra-like scales that are covering a wide area on the ventrobasal surface, becoming denser towards margins of the scale field; apical area aspinulate, lateral margin connecting small lateral lobes with small hydra-like scales. Lateral lobe is poorly developed and hardly delimited from medial lobe; mostly smooth, but with lateral band of small hydra-like scales, and a few sensillae. The basal section is completely covered by triangular scales. Egg: Chorion brown; length 0.28���0.35 mm, width 0.22���0.26 mm (n=8). Shape oval, opercular end usually depressed, collar end less rounded; cross section rounded or indented. Hatching line inconspicuous. Micropyles in a row on the opercular third, not raised, each located on the junction of carinae between follicular cell impressions (FCIs). Chorion with marked ornamentation of penta- and hexagonal FCIs. Collar round, rim slightly flanged, bears one row of FCIs. Anchor large and flat. Distribution and biology: Isoperla vevcianensis has a narrow endemic distribution, restricted to the Jablanica Mts, on the border zone of Albania and North Macedonia (Ikonomov 1980, Mur��nyi 2011). The species is mostly associated with headwater brooks in the alpine and subalpine grasslands, at elevations above 1100 meters (Figs. 25���27). The adults emerge in June and July. The adult and larval specimens from our study were found together with Leuctra metsovonica Aubert, 1956, Perla cf. pallida and another Isoperla species belonging to the I. tripartita species complex (sensu Mur��nyi et al. 2016). Species relationships: Isoperla vevcianensis was assigned to the Isoperla silesica group sensu Mur��nyi (2011) on the basis of the male penial armatures. Monophyly of the two Central European-Alpine species, I. silesica Illies, 1952 and I. zwicki Tierno de Figueroa & Fochetti, 2001 with the Central Balkanian I. vevcianensis and I. breviptera Ikonomov, 1980 should be confirmed by details of the penial lobes and cox-1 sequences, but these are known only for I. vevcianensis. The mature larva is distinctive among congeners by its large head and short pronotum, similar to the Alpine I. claudiae Graf & Konar, 2014 (in: Graf et al. 2014) and the Crimean I. prokopovi Zhiltzova & Zwick, 2012. An undescribed species from Montenegro, closely related to I. breviptera, has similar large head and short pronotum (W. Graf, pers. comm.). In the collection of the MM, we have larvae similar to the Montenegrian species, and probably belong to the same undescribed species from Kosovo. The wide trapezoid shaped lacinia is also unique among European species, but this character is rather variable among Nearctic species (Hilsenhoff & Billmyer 1973, Stewart & Stark 2002, Sandberg 2011). The blunt paraproct is unique among the known larvae of the genus (Zwick 2004), though this character is not documented for the East Palaearctic and Nearctic species (Stewart & Stark 2002, Teslenko & Zhiltzova 2006, and Sandberg 2011). For comparison, head, pronotum and paraprocts of sympatric larvae of the unidentified member of the I. tripartita species complex are depicted on Figs. 2, 6, and 8. Larvae of the I. tripartita species complex display characters typical for the West Palaearctic Isoperla. The egg of I. vevcianensis proved to be the usual type of West Palaearctic species, similar to those of e.g. I. tripartita tripartita as depicted in Mur��nyi (2011). Genetics. Haplotypes from Isoperla vevcianensis formed a cluster of identical sequences for the coxI gene (Fig. 24) with zero intraspecific genetic distance. Molecular analyses agreed with the morphological association between female, male and larvae of I. vevcianensis based on sequence similarities among the specimens. Interspecific genetic distances between I. vevcianensis and the members of the I. tripartita species complex exhibited a 3% divergence, suggesting different species., Published as part of Mur��nyi, D��vid, Kov��cs, Tibor, Gamboa, Maribet & Watanabe, Kozo, 2021, Loss of a larval generic character: an interesting and new description for Isoperla vevcianensis Ikonomov, 1980 (Plecoptera: Perlodidae) with updated adult characters, pp. 541-552 in Zootaxa 5082 (6) on pages 543-548, DOI: 10.11646/zootaxa.5082.6.2, http://zenodo.org/record/5797606, {"references":["Ikonomov, P. (1980) Nouvelles especes de Plecopteres (Insecta, Plecoptera) de Macedoine. II. Fragmenta Balcanica, 11 (4), 19 - 31.","Muranyi, D. (2011) Balkanian species of the genus Isoperla Banks, 1906 (Plecoptera: Perlodidae). Zootaxa, 3049, 1 - 46.","Aubert, J. (1956) Contribution a l'etude des Plecopteres de Grece. Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 29 (2), 187 - 213.","Muranyi, D., Kovacs, T. & Orci, K. M. (2016) Contribution to the taxonomy and biology of two Balkan endemic Isoperla Banks, 1906 (Plecoptera: Perlodidae) species. Zoosymposia, 11, 73 - 88. https: // doi. org / 10.11646 / zoosymposia. 11.1.11","Illies, J. (1952) Zwei neue arten der Plecopteren gattung Isoperla aus dem deutschen Mittelgebirge. Zoologischer Anzeiger, 149, 42 - 48.","Tierno de Figueroa, J. M. & Fochetti, R. (2001) Isoperla zwicki sp. n. (Plecoptera, Perlodidae) a new Italian stonefly species. Revue suisse de Zoologie, 108 (3), 483 - 486. https: // doi. org / 10.5962 / bhl. part. 80157","Graf, W., Konar, M., Muranyi, D., Orci, K. M. & Vitecek, S. (2014) A new species of Isoperla (Insecta, Plecoptera) from the Karawanken, with considerations on the Southern Limestone Alps as centers of Endemism. ZooKeys, 448, 27 - 36. https: // doi. org / 10.3897 / zookeys. 448.8509","Zhiltzova, L. A. & Zwick, P. (2012) Isoperla prokopovi, a new presumedly parthenogenetic stonefly from Crimea (Plecoptera, Perlodidae). Illiesia, 8 (4), 37 - 44.","Hilsenhoff, W. L. & Billmyer, S. J. (1973) Perlodidae (Plecoptera) of Wisconsin. The Great Lakes Entomologist, 6 (1), 1 - 14.","Stewart, K. W. & Stark, B. P. (2002) Nymphs of North American stonefly genera (Plecoptera). 2 nd Edition. The Caddish Press, Columbus, Ohio, 510 pp.","Sandberg, J. B. (2011) The Isoperla of California (Plecoptera: Perlodidae); larval descriptions and a key to 17 Western Nearctic species. Illiesia, 7 (22), 202 - 258.","Zwick, P. (2004) A key to the West Palaearctic genera of stoneflies (Plecoptera) in the larval stage. Limnologica, 34, 315 - 348. https: // doi. org / 10.1016 / S 0075 - 9511 (04) 80004 - 5","Teslenko, V. A. & Zhiltzova, L. A. (2006) Nymphs of the genus Isoperla Banks (Plecoptera, Perlodidae) from the Eastern Palaearctic Region. Zootaxa, 1130 (1), 1 - 33. https: // doi. org / 10.11646 / zootaxa. 1130.1.1"]}

Isoperla chongxui sp. nov. Figs. 1���11. Adult habitus. Body pale to dark brown, males much darker than females (Figs. 1���4). Head mostly pale brown, medially covered by an elliptical, dark stigma. Triocellate, anterior ocellus slightly smaller than posterior ones; compound eyes small and rounded. Antennae slender, generally dark brown, basal segments pale, subequal in length to the abdomen. Maxillary palps slender, four-segmented with a strongly reduced apical segment reminiscent of Chloroperlidae; labial palps shorter, three-segmented with a strongly reduced apical segment. Pronotum subrectangular with angled corners; median half of pronotum rugose and dark brown, lateral areas pale. Macropterous; wings hyaline, veins brown. Legs generally pale brown; two large tibial spurs present. Abdominal segments mostly dark brown in males, pale in females. Cerci slender, shorter than the abdomen, mostly pale, apically dark brown. Male. Body length 8���10 mm (N = 5); forewings length ca. 8.0 mm, hindwings length ca. 6.5 mm (Figs. 1���2). In the forewing, RP with two branches; CuA with three to four branches; AA1 simple, AA2 forked. In the hind wing, RP with two branches; anal area large and folded with eight anal branches. Abdominal tergum 1 completely sclerotized. Terga 1���9 with membranous median areas (Fig. 5). Lateral areas of terga 5���6 slightly humped (Figs. 5���6). Terga 7���9 each with a pair of strongly elevated lateral lobes, the lobes gradually enlarged towards posterior segments (Figs. 5���6). Posteromedial margin of tergum 9 rounded and sclerotized. Tergum 10 mostly sclerotized except for the posteromedial membranous area (Fig. 5D). Paraprocts triangular, rising to height of 10th tergum, hook-shaped and curved anteriorly, apices pointed (Figs. 5D, G, 6A, B). Vesicle poorly developed,>2X wider than long, reduced into an elliptical patch of dark hairs on posteromedial margin of sternum 8 (Fig. 7). Sternum 9 broadly produced, expanded backwards with a truncate apex (Fig. 7A, B). Aedeagus membranous, basoventrally with an elliptical spinule patch, apically with a spinulose lobe connected with a longitudinal stripe of dense spines; lateral membranous lobes present on apex of aedeagus (Fig. 8). Female. Body length 12.5���13.5 mm (N = 5) (Figs. 3���4).Abdominal segments pale.Tergum 10 with subtriangular posterior margin (Fig. 9A). Subgenital plate broad, gradually tapered towards apex, covering anterior ⅓ of sternum 9, posterior margin with a shallow notch (Fig. 9B). Paraprocts subtriangular with pointed apices (Fig. 9). The immature eggs rounded in shape; collar short, cylindrical; anchor near rounded from view of the anchor pole, surface without granules; chorionic surface with hexagonal follicle cell impressions (Fig. 10). Type material. Holotype male, China: Henan Province, Xinyang City, Dongzhai National Nature Reserve (Fig. 11), 31.94956609�� N, 114.25485947�� E, 160 m, 6-IV-2021, Si-Kai, Du (ICJUST). Paratypes: four males and five females, same locality and date as holotype (ICJUST). Etymology. The species is named for Mr. Xu Chong who has helped the authors in previous works. Remarks. The new species can be easily distinguished from its congeners by the presence of projected lobes on male abdominal terga 7���9 and smaller humps on previous tergal segments. In I. sextuberculata, the finger-shaped lobes are present on terga 4, 7 and 8 (Huo & Du 2020). Other species of Isoperlinae with abdominal processes include Isoperla distincta Nelson, 1976 from North America, Kaszabia digitata (Kawai, 1963), Isoperla sp. (Maruyama & Hanada 2016) from Japan, and Kaszabia nigricauda (Nav��s, 1923) from Mongolia and Russia. Locations of tergal lobes on these species are on different segments than those found on the new species., Published as part of Chen, Zhi-Teng, Du, Si-Kai & Li, Xin-Tong, 2021, Description of a remarkable new species of Isoperla (Plecoptera: Perlodidae), with supplements for Isoperla kozlovi Zhiltzova, 1972 from China, pp. 160-174 in Zootaxa 5027 (2) on pages 161-164, DOI: 10.11646/zootaxa.5027.2.2, http://zenodo.org/record/5448186, {"references":["Huo, Q. B. & Du, Y. Z. (2020) A new remarkable Isoperla species with abdominal processes from Hubei Province of Central China (Plecoptera: Perlodidae). Zootaxa, 4801 (3), 552 - 558. https: // doi. org / 10.11646 / zootaxa. 4801.3.7","Nelson, C. H. (1976) A new species of Isoperla (Plecoptera: Perlodidae) from Tennessee. Journal of the Kansas Entomological Society, 49, 212 - 214.","Kawai, T. (1963) A new species of the genus Isoperla (Plecoptera) from Echigo, Japan. Kontyu, 31, 61 - 63.","Maruyama, H. & Hanada, S. (2016) A field guide to Japanese aquatic insects: adults of mayflies, stoneflies and caddisflies. Zenkoku Noson Kyoiku Kyokai Co., Ltd., Tokyo, 488 pp.","Navas, R. P. L. (1923) Algunos insectos del Museo de Paris. Plecopteros. Revista de la Academia de Ciencias Exactas, Fisicas, Quimicas y Naturales de Zaragoza, 7, 15 - 51."]}

A new genus of family Perlodidae, Tibetisoperla Huo & Du, gen. nov. is described with one new species from Tibet, China. Male of the new genus is characterized by the divided tergum 10 with several large apical erect setae, highly reduced vesicle on sternum 8, and the sclerotized paraprocts with separate apical sclerite.

Tibetisoperla wangluyui Huo & Du, sp. nov. (Figs. 1–11) Adult habitus: General color dark brown to black (Figs. 1, 8). Head mostly dark brown except the occiput paler. Triocellate, anterior ocellus smaller than posterior ones (Figs. 2A, 9A). Antennae and palpi dark brown. Pronotum disc rectangular (length/width = 1/1.4), black laterally and dark brown medially; rugosities present laterally (Figs.2A, 9A). Legs dark brown (Figs. 1, 8). Wings hyaline. Veins and thoracic sterna similar to Isoperla, typical of this subfamily (Figs. 2A, 3A–B). Male: Forewing length 7.2 mm, hindwing length 6.1 mm, body length 8.5 mm. Abdomen dark brown to black and slightly sclerotized. Terga 3-6 with a pair of small yellow spots medially (obscure in some individuals) (Fig. 3C). Terga 8–9 bearing paired patches of sensilla on the posterior margin. Terga 9–10 with a conspicuous pale medial line and dark longitudinal marks between the sensilla basiconica patches. Posterior half of tergum 10 bilobate, tips curved upwards with sensilla basiconica and several thicker and large setae (Figs 4A–D). Vesicle reduced to a dark semicircle on posterior margin of sternum 8 (Fig. 4E–F). Paraprocts developed and sclerotized, apex with a separate hemispheric sclerite with patch of spines (Figs. 5–6). Aedeagus columnar, membranous, covered by fine asperities but lack large sensilla or spines; apex slightly pointed, with a hemispheric transparent area on its tip (Fig. 7). Female: Forewing length 10.7 mm, hindwing length 9.1 mm, body length 10.0 mm. Body coloration similar to male (Figs. 8, 9A). Tergum 10 without sclerotized or special process. Subgenital plate broadly semicircular and sclerotized (length/width = 1/2.8), with an indistinct median notch (Fig. 9B–C). Egg: 191 µm wide, 271 µm long, including 10 µm for collar. Oval, posterior (opercular) pole regularly rounded, wide, sides of egg less arched near collar, narrowing a little towards anterior pole with collar. Chorion uniformly covered with irregular papillae. Collar 44 µm wide at recurved, wavy distal flange, with a few longitudinal crests, base deeply embedded. Anchor fungiform, evenly covered by globular bodies (Fig. 10). Nymph: Unknown. Type material: Holotype male: Tibet Autonomous Region, China: XZCQ-20-96, Meiduo Village, Quluo Township, Coqen County (riverside grassland, under the rocks) 2020-VII-29, 30°39′19.43′′ N, 85°7′54.62′′ E, 4751 m. Paratypes: Tibet Autonomous Region, China: 1♀, XZZB-20-66, Longdangbo, Qiongguo Township, Zhongba County, 2020-VII-23, 29°46"10.10" N, 83°55"36.31" E, 4556 m; 1♂, XZRT-20-79, Rutog Town, Rutog County, 2020-VII-25, 33°18′7.76′′ N, 79°41′29.87′′ E, 4288 m; 2♂♂, XZGE-20-83, Jiamu River (riverside grassland, under the rocks), Shiquanhe Town, Gar County, 2020-VII-27, 32°26"9.80" N, 80°12"12.89" E, 4340 m; 1♀, XZGJ-20-88, Qusuoma (riverside grassland), Xiongba Township, Ge'gyai County, 2020-VII-28, 32°5′44.16′′ N, 81°47′30.80′′ E, 4607 m; 2♂♂, XZCQ-20-96, Meiduo Village, Quluo Township, Coqen County (riverside grassland, under the rocks) 2020-VII-29, 30°39′19.43′′ N, 85°7′54.62′′ E, 4751 m. Leg. Wang Lu-Yu, Liu Piao, Yuan Tao, Hou Yan-Meng. Distribution: China: Tibet (Fig. 11). Etymology: The name of the species honors the collector, Mr. Wang Lu-Yu, a young researcher who is working on the taxonomy of Chinese spiders. Remark: Female of this species have no any distinctive generic character, and similar to other Isoperlinae genera., Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2021, A new genus of Isoperlinae (Plecoptera: Perlodidae) from Tibet, China, pp. 343-352 in Zootaxa 4996 (2) on pages 344-350, DOI: 10.11646/zootaxa.4996.2.8, http://zenodo.org/record/5070043

Tibetisoperla Huo & Du, gen. nov. Diagnosis: Small size, body length ca. 10 mm; macropterous, wing length 10–15 mm, general color dark brown or black. Triocellate, anterior ocellus smaller than posterior ones. Pronotum dark-colored medially with rugosities, with a smooth longitudinal band along the centerline. Wings hyaline. Terga 8–9 of male sclerotized posteriorly, bearing paired patches of sensilla; posterior half of tergum 10 bilobate, tip curved upwards with several large setae; vesicle on sternum 8 reduced; paraprocts developed and sclerotized, with a spiny apical sclerite. Aedeagus membranous, short columnar, without any sclerites, covered by fine spines. Type species: Tibetisoperla wangluyui Huo & Du, sp. nov. Monotypic. Etymology: This name combines " Tibet " and " Isoperla ", meaning "distributed in Tibet, similar to Isoperla "., Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2021, A new genus of Isoperlinae (Plecoptera: Perlodidae) from Tibet, China, pp. 343-352 in Zootaxa 4996 (2) on pages 343-344, DOI: 10.11646/zootaxa.4996.2.8, http://zenodo.org/record/5070043

The drumming of Besdolus ravizzarum is studied and analyzed for the first time. The male signal is diphasic with duration of approximately 350 to 400 ms and with interknock intervals decreasing in ...

Isoperla sp. Nax��ıvan: 36: 3♀ (HNHM). Remarks. These females from the Lesser Caucasus probably belong to Isoperla armeniaca Zhiltzova, 1961, and not the above I. grammatica sensu lato. Their specific identity must be confirmed with the capture of males., Published as part of Mur��nyi, D��vid, Manko, Peter, Kov��cs, Tibor, Vin��on, Gilles, ��iak, Matej, Kerimova, Ilhama G., Snegovaya, Nataly Yurievna & Obo��a, Jozef, 2021, Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan, pp. 58-80 in Zootaxa 4975 (1) on page 75, DOI: 10.11646/zootaxa.4975.1.2, http://zenodo.org/record/4804613, {"references":["Zhiltzova, L. A. (1961) On the study of the fauna of Plecoptera of the Caucasus V. Plecoptera of Armenia (in Russian). Entomologicheskoe obozrenie, 40 (4), 872 - 880."]}

Perlodes sp. Kasymov (1972) reported this species from Yuxarı-Qarabağ region (Şuşa, Turşsu), probably as larvae., Published as part of Murányi, Dávid, Manko, Peter, Kovács, Tibor, Vinçon, Gilles, Žiak, Matej, Kerimova, Ilhama G., Snegovaya, Nataly Yurievna & Oboňa, Jozef, 2021, Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan, pp. 58-80 in Zootaxa 4975 (1) on page 63, DOI: 10.11646/zootaxa.4975.1.2, http://zenodo.org/record/4804613, {"references":["Kasymov, A. G. (1972) Presnovadnaya fauna Kavkaza. Elm, Baku, 288 pp."]}

Isoperla grammatica (Poda, 1761) sensu lato Ş��ki-Zaqatala region: 20: 1♂ 1♀, 6 larvae (HNHM), 2♂ (LMEE); 22: 1♂ 2♀ (LMEE); 23: 1♂ 8♀ (HNHM), 1♂ (LMEE); 24: 1 larva (HNHM), 1♂ (LMEE); 26: 1 exuviae (HNHM); 27: 1♀ (LMEE); 30: 1♀ (LMEE); 32: 3 exuviae (HNHM); 33: 1 larva (HNHM). Remarks. These Azerbaijan specimens probably belong to Isoperla caucasica. This species, together with I. pulchra, were considered as synonyms of I. bithynica by Zwick (1971). However, the identity of I. bithynica is questionable, since only female paratypes exist in the NHMW. The paratypes were recently studied by DM who found it unlikely they are conspecific with any of the known Caucasian species, being rather big and pale insects. The types of I. caucasica and I. pulchra are also lost (Zwick 1971). Their original description, and the numerous specimens we recently collected in both Georgian and Azerbaijani areas of the Greater Caucasus, suggest that these taxa belong to the I. grammatica species complex sensu Berth��lemy (1979). But the variability of the specimens is rather confusing, as already noted by Balinsky (1950) in the original description of I. caucasica and I. pulchra. None of the Caucasian specimens can be conspecific with I. grammatica sensu stricto, as defined by Rupprecht (1984) on the basis of neotype designation. Further research, especially molecular studies, are needed to clarify the species status of I. caucasica, I. pulchra and I. bithynica. Thus, we enumerate our specimens herein as I. grammatica sensu lato. Isoperla grammatica (probably also in a sensu lato approach) were reported from the whole of Anatolia, northern part of the Greater Caucasus, and the Alborz of Iran (Aubert 1964, Cherchesova & Zhiltzova 2013, Darilmaz et al. 2016). Isoperla caucasica (as I. bithynica) was reported from both the Greater and Lesser Caucasus, while I. pulchra had never been reported outside of the Greater Caucasus (Zhiltzova 1961, 1964b). Azerbaijan specimens were caught at diverse habitats of the Greater Caucasus, but mostly in medium-high elevations. These are the first exact data from Azerbaijan, after Kasymov (1996) noted occurrence of both I. grammatica and I. caucasica, as well as of I. pulchra in the country without locality., Published as part of Mur��nyi, D��vid, Manko, Peter, Kov��cs, Tibor, Vin��on, Gilles, ��iak, Matej, Kerimova, Ilhama G., Snegovaya, Nataly Yurievna & Obo��a, Jozef, 2021, Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan, pp. 58-80 in Zootaxa 4975 (1) on page 74, DOI: 10.11646/zootaxa.4975.1.2, http://zenodo.org/record/4804613, {"references":["Poda von Neuhaus, N. (1761) Insecta Musei Graecensis, quae in ordines, genera et species juxta Systema Naturae Linnaei digessit. Graecii, Widmanstad, 127 pp.","Zwick, P. (1971) Plecoptera aus Anatolien und benachbarten Gebieten. Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 44 (3 - 4), 233 - 264.","Berthelemy, C. (1979) Mating call and taxonomy in Pyrenean Isoperla. Gewasser und Abwasser, 64, 71 - 72.","Balinsky, B. I. (1950) On the Plecoptera of the Caucasus. Transactions of the Royal Entomological Society of London, 101, 59 - 87. https: // doi. org / 10.1111 / j. 1365 - 2311.1950. tb 00375. x","Rupprecht, R. (1984) Isoperla grammatica Poda, 1761 - Beschreibung eines Neotypus (Plecoptera). Annales de Limnologie, 20 (1 - 2), 81 - 90. https: // doi. org / 10.1051 / limn / 1984026","Aubert, J. (1964) Plecopteres du nord de l'Iran. Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 37 (1 - 2), 69 - 80.","Cherchesova, S. K. & Zhiltzova, L. A. (2013) Opredelitel vesnyanok (Plecoptera) Kavkaza. RGAU-MI K. A. T, Moskva-Vladikavkaz, 113 pp.","Darilmaz, M. C., Salur, A., Muranyi, D. & Vincon, G. (2016) Contribution to the knowledge of Turkish stoneflies with annotated catalogue (Insecta: Plecoptera). Zootaxa, 4074 (1), 1 - 74. https: // doi. org / 10.11646 / zootaxa. 4074.1.1","Zhiltzova, L. A. (1961) On the study of the fauna of Plecoptera of the Caucasus V. Plecoptera of Armenia (in Russian). Entomologicheskoe obozrenie, 40 (4), 872 - 880.","Zhiltzova, L. A. (1964 b) Vesnyanki (Plecoptera) v faune vysokogorya Bolsogo Kavkaza v Gruzii. Fauna vysokogorya Bolsogo Kavkaza v predelah Gruzii, 1964, 35 - 48.","Kasymov, A. G. (1996) Otryad Vesnyanki - Plecoptera. In: Musaev, M. A., Aliev, S. V., Gadziev, D. V., Kasymov, A. G. & Mikailov, T. K. (Eds.), Zivotniy mir Azerbaydzana. Tom II. Til Chlenistonogie. pp. 115 - 116."]}

Arcynopteryx dichroa (McLachlan, 1872) It was reported from the ��ki-Zaqatala region (Katex��ay River), under the name A. compacta (McLachlan, 1872) (Kasymov 1972). This is the only mention of the species from the Caucasian region, unreported by the relevant monographs (Cherchesova & Zhiltzova 2013, Teslenko & Zhiltzova 2009). Given its wide distribution in mountainous regions of the Holarctic, the presence of A. dichroa in the Caucasus is possible. However, the Azerbaijan specimen(s) has not been found, so its occurrence must be confirmed by new specimens., Published as part of Mur��nyi, D��vid, Manko, Peter, Kov��cs, Tibor, Vin��on, Gilles, ��iak, Matej, Kerimova, Ilhama G., Snegovaya, Nataly Yurievna & Obo��a, Jozef, 2021, Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan, pp. 58-80 in Zootaxa 4975 (1) on page 62, DOI: 10.11646/zootaxa.4975.1.2, http://zenodo.org/record/4804613, {"references":["McLachlan, M. R. (1872) Materiaux pour une Faune Nevropterologique de l'Asie Septentrionale. Seconde partie. Non-Odonates. Annales de la Societe Entomologique de Belgique, 15, 47 - 77 + Pl. I - II.","Kasymov, A. G. (1972) Presnovadnaya fauna Kavkaza. Elm, Baku, 288 pp.","Cherchesova, S. K. & Zhiltzova, L. A. (2013) Opredelitel vesnyanok (Plecoptera) Kavkaza. RGAU-MI K. A. T, Moskva-Vladikavkaz, 113 pp.","Teslenko, V. A. & Zhiltzova, L. A. (2009) Key to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and nymphs (in Russian). Dalnauka, Vladivostok, 382 pp."]}

Perlodes microcephalus (Pictet, 1833) Nax��ıvan: 35: 2♀ (HNHM). Remarks. A widespread and common species in the whole West Palaearctic; it has been reported from several localities in the Greater Caucasus, Lesser Caucasus, all of Anatolia and the Alborz of Iran (Aubert 1964, Teslenko & Zhiltzova 2009, Cherchesova & Zhiltzova 2013, Darilmaz et al. 2016). It emerges in spring and early summer. Our specimens occurred in high elevations of the Lesser Caucasus. New for the fauna of Azerbaijan., Published as part of Mur��nyi, D��vid, Manko, Peter, Kov��cs, Tibor, Vin��on, Gilles, ��iak, Matej, Kerimova, Ilhama G., Snegovaya, Nataly Yurievna & Obo��a, Jozef, 2021, Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan, pp. 58-80 in Zootaxa 4975 (1) on page 74, DOI: 10.11646/zootaxa.4975.1.2, http://zenodo.org/record/4804613, {"references":["Pictet, F. J. (1833) Memoire sur les Metamorphoses des Perles. Annales des Sciences Naturelles, 28, 44 - 65. https: // doi. org / 10.5962 / bhl. part. 8008","Aubert, J. (1964) Plecopteres du nord de l'Iran. Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 37 (1 - 2), 69 - 80.","Teslenko, V. A. & Zhiltzova, L. A. (2009) Key to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and nymphs (in Russian). Dalnauka, Vladivostok, 382 pp.","Cherchesova, S. K. & Zhiltzova, L. A. (2013) Opredelitel vesnyanok (Plecoptera) Kavkaza. RGAU-MI K. A. T, Moskva-Vladikavkaz, 113 pp.","Darilmaz, M. C., Salur, A., Muranyi, D. & Vincon, G. (2016) Contribution to the knowledge of Turkish stoneflies with annotated catalogue (Insecta: Plecoptera). Zootaxa, 4074 (1), 1 - 74. https: // doi. org / 10.11646 / zootaxa. 4074.1.1"]}

Known Plecoptera data published from Azerbaijan are critically reviewed. New records of 28 species are enumerated on the basis of specimens collected between 2017 and 2019, among them 16 are new for the fauna of Azerbaijan. Nemoura irani Aubert, 1964 is new for the whole Caucasian region, Leuctra sanainica Zhiltzova, 1960 and Plesioperla sakartvella (Zhiltzova, 1956) are new for the Greater Caucasus. The female and larva of an unknown Protonemura Kempny, 1898 species, collected in the Talysh Mts, are illustrated and described under temporary name Protonemura sp. AZE-1. A new species of Protonemura, collected both in the Azerbaijan and Georgian areas of the Greater Caucasus, will be formally described in a further paper. A male Protonemura specimen was found to be infected by mermithid worms, morphological lesions are illustrated and commented; this is the second documented case of mermithid infection in stoneflies. Subspecies level identity of Azerbaijani populations of Leuctra fusca (Linnaeus, 1758) proved to be problematic, morphological characters of the specimens are illustrated. Synonymy of Isoperla caucasica Balinsky, 1950 and I. pulchra Balinsky, 1950 under I. bithynica (Kempny, 1908) is disputed, the two names are combined under I. grammatica (Poda, 1761) sensu lato.

Mesoperlina pecirkai Klap��lek, 1921 Figs. 31���32 Klap��lek, 1921:148; Illies, 1966:424, 425; Zhiltzova, 1970:587, figs. 14���17; Zwick, 1973:253, 254; Teslenko & Zhiltzova, 2009:49, figs. 272���275. Material examined. China, the Xinjiang Uygur Autonomous Region, Eastern Tien Shan: 1 female, 1 exuvia, Bogdo-Ula Range, Urumqi city, Dabancheng District, Sangecha River, 35 km N of Dabancheng, an altitude 2,356 m above sea level, 13.VII.2017, N 43��40.583���, E 88��17.006���, leg. D.M. P. Notes. The assignment of the female to M. pecirkai was based on body size, color pattern, and shape of the genital plate. Mesoperlina pecirkai differs from other known members of the Mesoperlina in having the largest body size and wingspan. The shape of the female genital plate, color pattern of the head, the body and wingspan from Sangecha stream agree with the redescription and illustrations (Zhiltzova 1970). Female. The body is 16.0 mm in length, macropterous, and has a forewing length of 14.1 mm, and wingspan of 30.2 mm. The head bears a distinct brown M-line and brown, arcuate bands connect the posterior ocelli with the tentorial callosities in front (Fig. 31). The clypeus is brownish above M-line corners. The interocellar area is a large, triangular, pale spot, and nearly enclosed by pigment posteriorly (Fig. 31). The lateral margins with pale areas extending from compound eyes to the M-line bases. The occiput has two oval brown spots and two transverse brown bands curved along the stem and covered with brown spines. The spinule row is interrupted medially. The epicranial suture is pale (Fig. 31). The pronotum is brown, with wide, pale medial stripe, laterally pronotum with dark rugosities on a pale brown background (Fig. 31). The abdomen is paler than other parts of the body. Sternum 8 yellow with a round brown area medially. The subgenital plate is short, round, and extends beyond sternum 8 covering about one third of sternum 9, and bears a few thin transverse wrinkles at the base (Fig. 32). The posterior margin of the subgenital plate is slightly pigmented posterolaterally (Fig. 32). Distribution and ecology. Mesoperlina pecirkai is one of the most common and numerous species found in Central Asia. The species is widespread in the running waters of the Pamir, Hindu Kush, the Western and Central Tien Shan, including the Naryn River basin bordering the Xinjiang Uygur Autonomous Region in China where the female was collected in Bogdo-Ula Range. Emergence extends from mid-May to late July. Mesoperlina pecirkai inhabits cold mountain rivers and streams at the altitudes of 800 to 2,700 ��� 3,000 m above sea level. Unlike the other species of the genus, M. pecirkai may range high into the mountains, without going down beyond the foothill belt (Zhiltzova 1970). This is the first report of M. pecirkai in the Eastern Tien Shan and stonefly fauna of China. The female and exuvia were found at the upper section of mountain Sangecha Stream that drains the glacier Sanchecha Lake and flows down between the mountain slopes which are covered with grass at an altitude 2,356 m above sea level (Fig. 35). The Sangecha Stream has a fast current, the substrate consists of large boulders and cobbles, and a riparian gallery of trees (Fig. 35). Mesoperlina pecirkai was collected with N. lepnevae and F. wusuensis., Published as part of Teslenko, Valentina A. & Palatov, Dmitry M., 2021, A poorly known species and new records of Plecoptera from the Eastern Tien Shan, Xinjiang Uygur Autonomous Region, China, pp. 123-136 in Zootaxa 4950 (1) on pages 134-135, DOI: 10.11646/zootaxa.4950.1.6, http://zenodo.org/record/4643499, {"references":["Klapalek, F. (1921) Plecopteres nouveaux. Annales de la Societe Entomologique de Belgique, Bruxelles, 61, 146 - 150.","Illies, I. (1966) Katalog der rezenten Plecoptera. Das Tierreich - Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen, 82, 1 - 631.","Zhiltzova, L. A. (1970) A revision of Middle Asian species of stoneflies of the genus Mesoperlina Klap. (Plecoptera: Perlodidae). Revue d'Entomologie d'USSR, KLIK, 3, 578 - 591.","Zwick, P. (1973) Insecta: Plecoptera. Phylogenetisches System und Katalog. Das Tierreich 94. Walter de Gruyter, Berlin, xxxii + 465 pp.","Teslenko, V. A. & Zhiltzova, L. A. (2009) Keys to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and larvae. Dalnauka, Vladivostok, 382 pp."]}

Filchneria wusuensis Chen, 2019 Figs. 13���30 Chen, 2019:512, figs. 1���7. Material examined. China, the Xinjiang Uygur Autonomous Region, Eastern Tien Shan: 1 male, 1 female, 1 nymph, Bogdo-Ula Range, Urumqi city, Dabancheng District, Zienzan stream in the headwaters of the Malu River, an altitude 2,443 m above sea level. 09.VII.2017, N 43��49.738���, E 88��10.351���, leg. D.M. P.; 2 males, 1 female, Bogdo-Ula Range, Urumqi city, Dabancheng District, Sangecha Stream, 35 km N of Dabancheng, an altitude 2,356 m above sea level, 13.VII.2017, N 43��40.583���, E 88��17.006���, leg. D.M. P.; 6 males, 1 female, Karlyktag Range, Hami city, Ayar-Gol Stream, 60 km NE of Hami, an altitude 2,426 m above sea level, 21.VII.2017, N 43��12.225���, E 94��07.128���, leg. D.M. P. Supplementary description. Adult habitus. The head is brown, with an indistinct M-line, tentorial callosities on the clypeus pale, a pair of narrow transverse, and yellow marks above the lateral ocelli and small black spots inside (Figs. 13, 23). The interocellar area has a large, tire-shaped yellow spot that widens anteriorly and is open posteriorly, an almost square, pale-brown spot is present anterior to the median ocellus and a vague M-line. The occipital area bears a transverse yellow band that extends along the epicranial suture (Figs. 13, 23). The submental gills are short. The pronotum is brown, with a large median yellow band that occasionally includes a thin brown stripe along the median pronotal line and two thin incomplete brown stripes laterally (Fig. 13). The lateral arms of the mesofurcasternum reach the posterior corners of the furcal pits, with dark beak-like spots at the inner edges of each furcal pit, a dark brown transverse suture occurs on the mesosternum that is unclear and incomplete anteromedially. The abdomen is covered with colorless clothing hairs (Figs. 13, 14), and segments 1���3 are divided by a pleural membrane laterally. The pleural folds on segment 4 are vague, and the other segments are undivided. The legs are yellow with brown bands (Fig. 13). Dorsally, the femur has a dark brown band that widens basally closer to the inner margin, while the outer margin is pale. The tibia has a dark brown band in the basal quarter (Fig. 13). The cerci are bicolored, each segment with a narrow yellow band basally and a wide brown band distally (Fig. 13). The color pattern of the female is similar to that of the male, with the exception that the interocellar spot is nearly closed posteriorly while the pronotal median band is narrower and widest posteriorly (Fig. 23). Male. The body is 15.2���19.7 mm in length (n=9). The male is brachypterous, wings not exceeding tergum 6 (Figs. 13, 14). Abdominal terga 6���8 are humped laterally; medial indistinct pale spots expand anteriorly and are divided by a longitudinal, dark brown median band (Fig. 14). Tergum 8 bears two submedial swellings densely covered by short sensilla basiconica and long colorless hairs posterolaterally. Tergum 9 has an anteromedial arrowshaped membranous area that may be almost hidden under tergum 8 (Figs. 14, 15). Similar but smaller posteromedial swellings occur on tergum 9 and are covered by thick sensilla basiconica and colorless hairs posterolaterally (Fig. 15). The sensilla basiconica appear much less frequently than on tergum 8 and their bases are clearly outlined with pale brown pigments. In the lateral view, posterior margin of tergum 10 is strongly raised, obtusely angled, and directed forward and upward. In the dorsal view, tergum 10 is rounded posteriorly and is mostly pale with small round membranous marks anteromedially and a pair of diffuse paramedial brown spots (Figs. 15, 22). Short sensilla basiconica are distributed radially from the posterior margin to two-thirds of the tergite length in the middle (Fig. 15). At rest, the paraprocts are triangular with convex dorsomedial edges (Fig. 16). The paraproct sclerite is triangular, wide, heavily sclerotized basally, and narrowed distally with a pointed tip that is occasionally truncated and slightly sclerotized (Figs. 14, 19). In the caudal view, the paraproct sclerite surrounds a gray oval paraproct lobe covered with dense, tiny, dark brown sensory spines and sparse fine sensory hairs (Figs. 16���20). The naturally everted eversible paraproct lobe (EPL) enlarges into a cylindrical membranous lobe with a small papilla atop, and is covered dorsally by sparse fine sensory hairs (Figs. 18, 19). In the caudal view, the EPL margin close to the base bears a small, rounded swelling directed inside that is covered with dense, tiny, dark brown sensory spines and sparse fine sensory hairs (Fig. 19). The naturally everted aedeagus is variable in shape, membranous, short and wide, and bears unpaired anterodorsal and posterodorsal lobes, and has two pairs of lateral lobes (Figs. 21, 22). The anterodorsal lobe looks like a low, wide, and round arch that emerges above the aedeagus with paired small round cuticular swellings laterally (Fig. 21). Each anterolateral lobe is smaller than the posterolateral lobe, with small, round, or papilla cuticular swellings at the apex (Fig. 21). Each posterolateral lobe is extended and rounded laterally, occasionally with round cuticular swellings at the apex directed upward. The posterodorsal lobe is wide at the base with a triangular top reaching the bases of the lateral cuticular swellings of the anterodorsal lobe (Fig. 21). Female. The body is 23.5 mm in length, macropterous, and has a forewing length of 14.0 mm and a wingspan of 31.0 mm. The forewing is brownish, while the hind wing is paler (Figs. 25, 26). The venation includes an irregular net near the apex comprising three rows of cells. The forewing has three cross-veins between C and Sc and five apical veins between Sc and R 1 (Fig. 25). Rs bears three apical branches. There are seven apical veins between М and Cu 2, and three anal veins. The hind wing has a large anal area, and A 2 , A 3 and A 5 are forked. Sternum 8 is brown in the anteromedian half, and a pair of oblique dark brown lateral sclerites surrounds a pale subgenital plate anterolaterally (Fig. 24). The subgenital plate is bilobed, large, extending almost half the length of sternum 9. The posterior margin has an U-shaped notch that separates two large lobes with almost straight inner angles. Sparse, tiny, dark setae form a field at the base of the U-shaped notch (Fig. 24). Egg. This is large, rather circular than trilateral in cross-section (the last feature is typical for Filchneria) with dimensions of 715��475 ��m. The longitudinal ridges are not specially marked (Figs. 27���29). The collar is short and formed by weak, barely noticeable extensions of the three longitudinal ridges, and the inner edges of the collar are slightly curved (Figs. 28, 29). The sides of the collar bear short longitudinal carinae (Fig. 28). The margin of the shoulder transitions smoothly to the egg chorion surface (Fig. 28). A transverse row of two to seven micropyles is subequatorial; micropyles have a small, short lipped orifice (Fig. 30). The anchor is mushroom-shaped, with single globular bodies on the anchor plate (Fig. 27). The margin of the anchor covers the collar completely (Fig. 27). The chorionic surface is rough with small, light tubercles (Fig. 28). Note. In our material that was collected at an altitude of 2,300 ���2,400 m, F. wusuensis males had a darker, more contrasting body color pattern, especially on the pronotum, than the holotype. This may be due to the maturity of the adults as well as differences in environmental conditions (increased ultraviolet radiation, decreased temperature, etc.) compared with the type locality at 1,700 m above sea level. On the other hand, the male described in our material is identical to the holotype of F. wusuensis in its pale color pattern on tergum 10, location of the sensilla basiconica on terga 8���10, cylindrical shape of the naturally everted EPL, and small papilla at the tip of EPL (Fig. 19). In general, the penial armature is similar, but in the male described from our material, the aedeagus is turned out more than in the holotype; therefore, the membranous lobes are more distinct. Females from fresh material were similar to Chen���s (2019) paratype. They had a similar color pattern on the head, pronotum, and shape of the notch on the bilobed subgenital plate, with almost straight inner angles as in the paratype (Fig. 24). The collar on the egg in the paratype appeared to be present but was poorly visible due to use of a low magnification and lack of scanning electronic imaging, making it impossible to compare the features of the сhorion structure. Distribution and ecology. The distribution of F. wusuensis is limited to the Eastern Tien Shan and was first described in China, in the Xinjiang Uygur Autonomous Region, Wusu City, and Bayingou River located in the Eastern Tien Shan. Our specimens were collected in the streams of the neighboring locality, in Bogdo-Ula and Karlyktag Ridges. Filchneria wusuensis inhabited mountain streams at altitudes of 2,300���2450 m above sea level, including those fed by glaciers (Figs. 35���37). Adults were found in July., Published as part of Teslenko, Valentina A. & Palatov, Dmitry M., 2021, A poorly known species and new records of Plecoptera from the Eastern Tien Shan, Xinjiang Uygur Autonomous Region, China, pp. 123-136 in Zootaxa 4950 (1) on pages 129-133, DOI: 10.11646/zootaxa.4950.1.6, http://zenodo.org/record/4643499, {"references":["Chen, Z. T. (2019) A new brachypterous Filchneria and two new generic records for China, Arcynopteryx and Pictetiella (Plecoptera: Perlodidae). Zootaxa, 4679 (3), 511 - 526. https: // doi. org / 10.11646 / zootaxa. 4679.3.5"]}

Nemoura lepnevae Zhiltzova, 1971, Amphinemura mirabilis turkestanica Zhiltzova, 1978, Capnia s.l. longicauda Zhiltzova, 1969 and Mesoperlina pecirkai Klapálek, 1921 are reported for the stonefly fauna of China for the first time. The species were collected in the Bogdo-Ula and Karlyktag Ranges of the Eastern Tian Shan Mountains, the Xinjiang Uygur Autonomous Region. In addition, a detailed redescription of Filchneria wusuensis Chen, 2019 including new illustrations is provided.

The complete mitochondrial genome of the perlodid stonefly, Filchneria songi Chen, 2019 was sequenced and analyzed. This double strand, circular molecule is 16,028 bp in length with an A + T content of 70.1%, and contains 13 PCGs, 22 tRNA genes, and two rRNA genes. A 1099-bp long control region was detected, with a high A + T content of 81.9%. Gene arrangement was conserved in the mitogenome of F. songi. Most PCGs use standard start codons and ended with complete stop codons. The phylogenetic analysis supported that F. songi was closely related with species of Perlodes Banks, 1903.

International audience; In the paper ‘A new stonefly species (Plecoptera: Perlodidae) from Eocene Baltic amber and questions on the wing venation potential for species diagnostic of fossil Plecoptera’, we figured and discussed on a specimen of the plecopteran Pteroliriope sinitshenkovae Cui, Béthoux, Kondratieff, Shih & Ren, 2016 (Jouault et al., 2021: figs 5–6), under the accession number MNHN.F.A71351, of the collection of the Muséum National d’Histoire Naturelle in Paris, France. The repository number has been corrected to fit with the recent ‘parachute research’ issue (DeMiguel et al., 2021). Therefore, the specimen is in fact deposited in the collection of the Nanjing Institute of Geology and Palaeontology, Chinese Academy of Science, China, under the accession number NIGP176250.

A new species of the Yellow Sally genus (Isoperla Banks, 1906) is described, based on morphological (males and females adults, larval and egg) and molecular (the barcode region of the cytochrome c oxidase subunit I gene (COI)) features. Popijač’s Yellow Sally, I. popijaci Hlebec & Sivec, sp. nov. inhabits two karstic sources of the Krasulja rivulet in Croatia. Male and female of the new species are characterised by colouration patterns of the head and pronotum; the dimensions of the female subgenital plate; the medial penial armature and oval-shaped egg without collar and anchor. The larvae differ from their congeners by the uniquely coloured head and pronotum. Based on morphological characteristics I. popijacisp. nov. belongs to the I. tripartita species group. Phylogenetic and taxonomic relationships were reconstructed using three methods of phylogenetic inference and three species delimitation methods. As I. popijacisp. nov. occurs at a narrow area of the Krasulja rivulet in Krbava field, the study puts emphasis on the conservation and hotspot importance of the temporary rivers in the Dinaric karst. Furthermore, the study accentuates the necessity for further research on the genetic diversity of Plecoptera in Croatia.

A new species of the perlodid genus, Isoperla Banks, I. sejila sp. nov., is described and illustrated from the Tibet Autonomous Region of southeastern China. The everted aedeagus of the male is described and the relationships with other species of this genus known from China are discussed.

Isoperla sejila sp. nov. Adult habitus. (Figs. 1���3). Body generally brown to dark brown. Wings macropterous with both macropterous and brachypterous females (Fig. 1). Wings hyaline with brown veins. Forewing: five crossveins between the C and Sc veins, more R veins and more m-cu crossvines. Hindwing with four crossveins between C and Sc veins, M veins with four branches, Anal field large, and with more A veins. (Fig. 2). Head slightly wider than pronotum, with a rounded pale spot occurring between the two posterior ocelli. M-line dark brown. Three pale ocelli, posterior pair larger. Antennae and palpi dark brown. Pronotum rectangular, wider than long, with darkly sclerotized anterior and posterior margins. Rugosities dark, two yellow brown longitudinal stripes bordering the sclerotized median suture. The mesosternal Y-arms approach posterior corners of furcal pits. Legs yellow brown to brown. Cerci slender and brown, with 18 segments, the distal three dark brown, and the ventromedial of segments 6-18 each with a long seta (Fig. 3). Male. (Figs. 3���6). Body length ca. 11 mm. Forewing length ca. 10 mm, hindwing length ca. 9 mm. Tergum 10 with posterolateral stronger and longer setae. Sterna 6-8 sometimes with some dark transverse bands near the posterior margins. Sternum 9 extended posteriorly and covering nearly the entire length of sternum 10. Paraprocts weakly sclerotized, bases broad gradually tapering to points, apexes slightly hooked with long setae on the ventroposterior margin. Everted aedeagus completely membranous, cylindrical in-shaped, the apex rounded and inflated. The dorsal surface covered with small, stout and sharp spinules (Fig. 6d), mixed with some sensilla, each with a single microtrichia (Fig. 6e). Female. (Figs. 1, 7). Macropterous individuals, body length ca. 12 mm. Forewing length ca. 12 mm, hindwing length ca. 11 mm. Brachypterous individuals, body length ca. 11 mm, the forewing length ca. 7 mm, hindwing length ca. 5 mm. Terga 6���9 with two dark spots median and some irregular-shaped dark spots occurring near the lateral margins. Tergum 10 similar to male. Subgenital plate subtriangular-shaped, sometimes medially slightly concave, broadly produced, covering nearly ⅓ of sternum 9, with a dark median stripe. Margin of subgenital plate not deflected ventrally near apex. Paraprocts triangularly-shaped and covered with setae. Egg. (Fig. 8). Available eggs dissected from several females were apparently not mature. Elliptical in the lateral view. Chorion totally pale, ca. 0.34 mm long and 0.22 mm wide (n=8). Collar ring-shaped, rim irregular. Chorion surface pited. Type material. Holotype male (CAU), China: Tibet Autonomous Region, Nyingchi City, Nyingchi Coun- ty, Sejilashan (Sejila Mountains), Sejilashan National Natural Reserve, unnamed stream at Zhongshan Station, 29��36.60'N, 94��36.19'E, 4033 m, 5.VI.���VII.2017 and 5.VII.���VIII.2017, Q.C. Yang. Paratypes: 35 males and 50 females (CAU & HIST), same locality and data as holotype. Distribution. Presently only known from the Sejila Mountains National Nature Reserve, Nyingchi (Linzhi) of the Tibet Autonomous Region, China. Etymology. The species refers to the type locality, Sejila Mountains, Tibet Autonomous Region of southwestern, China. Remarks. The adult male of the genus Isoperla is usually characterized by a vesicle on sternum 8 (Chen 2018), but in several species the vesicle is reduced or obsolescent. The vesicle of I. sejila is obsolescent. Other Chinese species apparently lacking a developed vesicle includes I. neimongolica (see fig. 4 in Yang & Yang 1996), but in I. neimongolica the apex of the extended ninth male sternum is trapezoidal, and the posterior margin truncate, separating the two taxa. Additionally, dorsally, the head of I. sejila has a pale and rounded spot, whereas I. neimongolica has a butterfly-shaped patch connecting the ocelli. It is unknown if the male of I. lunigera (Klap��lek, 1923) possesses a vesicle, but the paraproct of this species is obviously hooked and the aedeagus has a sclerite. The male of I. sejila lacks aedeagal sclerites and the paraprocts are slightly hooked (see figs. 183���188 in Teslenko & Zhiltzova 2009 and figs. 332���333 in Judson & Nelson 2012). The males of I. fengi Wu & Claassen, 1934, I. sowerbyi Wu & Claassen, 1934, and I. bimaculata Yang & Yang, 1996 are still unknown, and original material was collected many years ago and no recently collected specimens are available for study (Chen et al. 2019). However, females of these three species can be distinguished from I. sejila. The subgenital plate of I. fengi is produced over the entire sternum 9 and has a uniform medial posterior emargination, whereas the subgenital plate of I. sejila is produced 1/3 of stermun 9, sometimes with a small posterior emargination. The female of I. bimaculata is characterized by the sternum 9 that divided into two parts, I. sejila lacks this character. The subgenital of I. sowerbyi is more rounded and produced more than half of sternum 9, whereas the subgenital of I. sejila is subtriangular and shorter., Published as part of Cao, Zhishan, Wang, Ying & Li, Weihai, 2020, A new species of Isoperla (Plecoptera: Perlodidae) from China, pp. 251-260 in Zootaxa 4858 (2) on pages 252-254, DOI: 10.11646/zootaxa.4858.2.6, http://zenodo.org/record/4411821, {"references":["Chen, Z. T. & Du, Y. Z. (2018) A checklist and adult key to the Chinese stonefly (Plecoptera) genera. Zootaxa, 4375 (1), 59 - 74. https: // doi. org / 10.11646 / zootaxa. 4375.1.2","Yang, D. & Yang, C. (1996) Four new species of Plecoptera from Nei Mongol. Journal of China Agricultural University, 1 (5), 115 - 118.","Klapalek, F. (1923) Plecopteres nouveaux. Annales de la Societe Entomologique de Belgique, 63, 25 - 26.","Teslenko, V. A. & Zhiltzova, L. A. (2009) Key to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and nymphs. Russian Academy of Sciences, Far Eastern Branch, Dalnauka, Vladivostok, 381 pp.","Judson, S. W. & Nelson, C. R. (2012) A Guide to Mongolian Stoneflies (Insecta: Plecoptera). Zootaxa, 3541 (1), 1 - 118. https: // doi. org / 10.11646 / zootaxa. 3541.1.1","Wu, C. F. & Claassen, P. W. (1934) New species of stoneflies. Bulletin of the Peking Society of Natural History, 9, 111 - 129.","Chen, Z. T., Song, L. D. & Feng, W. T. (2019) A new species of Isoperla (Plecoptera: Perlodidae) from the Qinling Mountains of northwestern China and notes on the Chinese species of the genus. Zootaxa, 4651 (2), 379 - 391. https: // doi. org / 10.11646 / zootaxa. 4651.2.11"]}

Huo, Qing-Bo, Chen, Zhen-Ning, Kong, Xiang-Bo, Du, Yu-Zhou (2020): New records and a confirmation of three perlodid species in China, with additional notes and images of Rauserodes epiproctalis (Zwick, 1997) (Plecoptera: Perlodidae). Zootaxa 4808 (3): 455-474, DOI: https://doi.org/10.11646/zootaxa.4808.3.3

Mesoperlina capnoptera (McLachlan, 1886) Chloroperla capnoptera: McLachlan, 1886 [1885���1886], Tijdschr. Entomol., 29:157. Isoperla capnoptera: Claassen, 1940, Mem. Agri. Exp. Sta., Cornell Univ., 232:199. Isoperla capnoptera: Illies, 1966, Das Tierreich, 82:397. Mesoperlina monae: Joost, 1970, Entomol. Nach., 14(8):120. Mesoperlina capnoptera: Zhiltzova, 1970, Entomol. Obozr., 49(3):578. Mesoperlina capnoptera: Zwick, 1973, Das Tierreich, 94:253. Mesoperlina capnoptera: Teslenko & Zhiltzova, 2009, Russian Academy of Sciences, Vladivostok: Dalnauka, 48. Diagnosis: Male tergum 10 divided behind by a longitudinal division �� the length; medial edge of each half produced into an acute forward and upward hook, with a small rhomboid-like sclerite located between bases. Median sclerite on the posterior margin of male tergum 10 not separated. Aedeagus short, wide at base, apex in profile plumb-like, small number spines scattered over the surface of aedeagus not forming distinct clusters (Figs. 8���10). Distribution: China (Xinjiang Uygur Autonomous Region), Mongolia, Russia. Material examined: 3 ♂♂, China, Xinjiang Uygur Autonomous Region, Shawan County, Shuanglonggou scenic spot, ca. 43.88��N, 85.35��E (UTM: 45 N 367446 4859868), 2011-VII-16. Remark: A single species of Mesoperlina has been previously recorded from China, M. ochracea Klap��lek, 1921 also from the northwestern Xinjiang Uygur Autonomous Region and Afghanistan, Iran, and Russia (Wu 1938, Du 1999, DeWalt et al. 2020). The male of M. ochracea compared to M. capnoptera, has a larger area of sensilla on male tergum 9, and the median rhomboid sclerite of tergum 10 is smaller than that of M. ochracea, without a complete surrounding membranous area., Published as part of Huo, Qing-Bo, Chen, Zhen-Ning, Kong, Xiang-Bo & Du, Yu-Zhou, 2020, New records and a confirmation of three perlodid species in China, with additional notes and images of Rauserodes epiproctalis (Zwick, 1997) (Plecoptera: Perlodidae), pp. 455-474 in Zootaxa 4808 (3) on pages 459-461, DOI: 10.11646/zootaxa.4808.3.3, http://zenodo.org/record/3933641, {"references":["McLachlan R. (1886) [1885 - 1886] Chloroperla capnoptera n. sp .. Tijdschrift Voor Entomologie, 29, 157 - 158.","Claassen, P. W. (1940) A catalogue of the Plecoptera of the world. Cornell University Press, 235 pp.","Illies, J. (1966) Katalog der Rezenten Plecoptera. Das Tierreich, Lieferung, 82 (I-XXX), 1 - 632.","Joost, W. (1970) Die Steinfliegen (Plecoptera) der Mongolisch-Deutschen Biologischen Expedition 1964. Mitteilungen aus dem Museum fur Naturkunde in Berlin. Zoologisches Museum und Institut fur Spezielle Zoologie Berlin, 46, 37 - 45. https: // doi. org / 10.1002 / mmnz. 19700460105","Zwick, P. (1973) Insecta: Plecoptera. Phylogenetisches System und Katalog. Insecta: Plecoptera Phylogenetisches System und Katalog. Das Tierreich, 94, 1 - 465.","Teslenko, V. A. & Zhiltzova, L. A. (2009) Key to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and nymphs. Russian Academy of Sciences, Far Eastern Branch, Dalnauka, Vladivostok, 381 pp.","Wu, C. F. (1938) Plecopterorum sinensium: A monograph of stoneflies of China (Order Plecoptera). Yenching University, Beijing, 225 pp.","Du, Y. Z. (1999) A taxonomic study on Plecoptera from China. Zhejiang University, Hangzhou, 324 pp.","DeWalt, R. E., Maehr, M. D., Hopkins, H., Neu-Becker, U. & Stueber. G. (2020) Plecoptera Species File Online. Version 5.0 / 5.0. Available from: http: // plecoptera. speciesfile. org / Common / basic / Taxa. aspx? TaxonNameID = 1157347 (accessed 1 May 2020)"]}

Three species of the family Perlodidae are newly reported or confirmed for China, Isoperla asiatica Raušer from Arxan, Inner Mongolia Autonomous Region, Isoperla eximia Zapekina-Dulkeit from Changbai Mountain, Jilin Province, and Mesoperlina capnoptera (McLachlan, 1886) from Xinjiang Uygur Autonomous Region. Based on new material, additional taxonomic notes and images of another perlodid stonefly, Rauserodes epiproctalis (Zwick, 1997) is provided.

Isoperla asiatica Rau��er, 1968 Isoperla asiatica: Rau��er, 1968, Entomol. Abhandl., 34(5):364. Isoperla asiatica: Zwick, 1973, Das Tierreich, 94:242. Isoperla asiatica: Zwick & Surenkhorloo, 2005, Acta Zool. Acad. Sci. Hung., 51(3):264. Isoperla asiatica: Teslenko, 2006, Zootaxa, 1130:5. Isoperla asiatica: Teslenko & Bazova, 2009, Entomol. Rev., 89(9):1063. Isoperla asiatica: Teslenko & Zhiltzova, 2009, Russian Academy of Sciences, Vladivostok: Dalnauka, 34. Isoperla asiatica: Judson & Nelson, 2012, Zootaxa, 3541:46. Diagnosis: Male head mostly yellowish except the areas between ocelli to occiput with a darker brown spot; a pale oval spot between the posterior ocelli. Antennae, palpi and cerci dark brown. Pronotum disc yellowish medially and dark brown rugosities present laterally. Paraprocts short and slightly sclerotized. Vesicle of sternum 8 reduced (Figs. 1���2). Aedeagus (not fully everted) membranous, without obvious sclerites; fine asperities present on surface (Fig. 3). Female with a semicircular dark subgenital plate (Fig. 4). Head and pronotal maculations, male and female terminalia match well the illustrations of Zwick & Surenkhorloo (2005) and Teslenko & Zhiltzova (2009). Distribution: China (Inner Mongolia Autonomous Region), Mongolia, Russia. Material examined: 3 ♂♂, 2 ♀♀, China, Inner Mongolia Autonomous Region, Hinggan League, outskirts of Arxan City, ca. 47.17��N, 119.89��E (UTM: 50 N 719009 5228108), 2018-V-28, leg. Xue Hai-Yang., Published as part of Huo, Qing-Bo, Chen, Zhen-Ning, Kong, Xiang-Bo & Du, Yu-Zhou, 2020, New records and a confirmation of three perlodid species in China, with additional notes and images of Rauserodes epiproctalis (Zwick, 1997) (Plecoptera: Perlodidae), pp. 455-474 in Zootaxa 4808 (3) on pages 456-457, DOI: 10.11646/zootaxa.4808.3.3, http://zenodo.org/record/3933641, {"references":["Rauser, J. (1968) Plecoptera. Ergebnisse der zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei. Entomologische Abhandlungen: Staatliches Museum fur Tierkunde in Dresden, 34, 329 - 398.","Zwick, P. (1973) Insecta: Plecoptera. Phylogenetisches System und Katalog. Insecta: Plecoptera Phylogenetisches System und Katalog. Das Tierreich, 94, 1 - 465.","Zwick, P. & Surenkhorloo, P. (2005) The Mongolian species of Isoperlinae (Plecoptera: Perlodidae). Acta Zoologica Academiae Scientiarum Hungaricae, 51 (3), 253 - 276.","Teslenko, V. A. & Zhiltzova, L. A. (2006) Nymphs of the genus Isoperla Banks (Plecoptera, Perlodidae) from Eastern Palaearctic Region. Zootaxa, 1130 (1), 1 - 33. https: // doi. org / 10.11646 / zootaxa. 1130.1.1","Teslenko, V. A. & Bazova, N. V. (2009) On the stonefly (Plecoptera) fauna of the transfrontier Selenga River basin. Entomological Review, 89, 1059 - 1068. https: // doi. org / 10.1134 / S 0013873809090061","Teslenko, V. A. & Zhiltzova, L. A. (2009) Key to the stoneflies (Insecta, Plecoptera) of Russia and adjacent countries. Imagines and nymphs. Russian Academy of Sciences, Far Eastern Branch, Dalnauka, Vladivostok, 381 pp.","Judson, S. W. & Nelson, C. R. (2012) A guide to Mongolian stoneflies (Insecta: Plecoptera). Zootaxa, 3541, 1 - 118. https: // doi. org / 10.11646 / zootaxa. 3541.1.1"]}

Filchneria dongruihangi sp. nov. Figs. 2–10. Male (Figs. 2–8). Body length ca. 14 mm, generally brown (Fig. 2). Head (Fig. 3) mostly brown; ocellar area with a diamond-shaped pale spot; lateral areas of the anterior ocellus with two transverse calluses; anterior of the head with a sub-trapezoidal pale area, expanding anteriorly; posterior area of the head pale. Antenna brown and slender, subequal in length to the abdomen. Pronotum (Fig. 3) subquadrate with obtuse corners, generally brown except for the pale, median band, the band constricted twice near anterior and posterior ends. Mesothoracic furcasterum branches reaching posterior of the furcal pits. Brachypterous (Figs. 1, 4 A–B), wing membrane subhyaline, veins pale brown; forewings length ca. 3.5 mm, hindwings length ca. 4 mm. In the forewing, the apical venation includes a small marginal net; anal area with two veins. In the hind wing, the apical net small and simple; anal area large, with eight anal branches. Legs mostly pale, joints darker. Abdominal segments generally brown (Fig. 5). Sterna 1 completely fused with metathorax. Segments 1–3 divided into distinct terga and sterna. Posterior of terga 7–9 slightly humped and hairy; tergum 7 with two sparse patches of sensilla basiconica near posterior margin; tergum 8 with a subtriangular membranous median area which covered with several moderate spines; two kidney-shaped light spots present lateral to the membrane; posterior half of tergum 8 with two dense patches of stout sensilla basiconica (Fig. 6 A–B). Tergum 9 with membranous median area and lateral spots similar to tergum 8, near posterior margin with two dense patches of stout sensilla basiconica. Anterior half of tergum 10 with a membranous median area, scattered with sparse short spines; posterior half of tergum 10 moderately upcurved, covered by dense sensilla basiconica. Sensilla basiconica on terga 8–10 with similar shapes and sizes. The paraproct sclerite prolonged(Fig. 7 A–B), wide and sclerotized basally, then constricted near base, apical half with a weakly sclerotized, subtriangular anterior expansion and a dark, finger-shaped apical projection, the anterior expansion and the apical projection divided by an obscure sinuous boundary; inner margin of each paraproct sclerite not connected basally; the eversible paraproct lobe resembling a "drumstick" (Fig. 7 C–F), with a broad basal cushion which covered by dense hairs and several short spines, then constricted near base and enlarged apically, surface covered with dense wrinkles and short hairs. The aedeagus (Fig. 8) completely membranous, with a low dorsomedial lobe and several small apical lobes (Fig. 8 A–D). From ventral and lateral views, the partially everted aedeagus of another male specimen apically with three ear-shaped large lobes surrounding a small medial lobe (Fig. 8 E–H). Cerci generally pale, subequal in length to the abdomen, each segment apically fringed with stout spines and long bristles. Female (Fig. 9). Body length ca. 17 mm, color pattern similar to the male (Fig. 9 A–B). Macropterous; forewing length 14 mm, hindwing length 12 mm. In the forewing, the venation includes a small net near the apex; anal area with four branches. In the hind wing, the apical net small and simple; anal area large, with 11 anal branches. Sternum 8 with two anterolateral sclerites, anteromedially with a subtriangular pale area. Subgenital plate (Fig. 9C) originating from half-length of sternum 8, covering half of sternum 9. The subgenital plate broad and weakly sclerotized, posterior margin mostly truncate, with a shallow median notch, the notch comprised of three small incisions, anterior area, median line and posterior margins pale, other areas weakly sclerotized. Sternum 9 with two dark spots laterally connected with lateral surfaces of the segment. Sternum 10 pale, unmodified. Type material. Holotype male, China: Heilongjiang Province, Qiqihar City, Liuyuan Park, Nenjiang River (Fig. 10), 47.35992625 N, 123.90812588 E, 145 m, April 25, 2020, Rui-Hang Dong, Ming-Wei Li (ICJUST). Paratypes: two males and one female, same locality and data as holotype (ICJUST). Etymology. The species is named after Mr. Rui-Hang Dong for collecting the specimens. Diagnosis. The nearly truncate posterior margin of the female subgenital plate can easily separate the new species from almost all eastern Asian congeners which have distinctly bilobed subgenital plates with deep posteromedial notch (Klapálek 1901, Šámal 1935, Navás 1936, Wu 1938, Zhiltzova 1971, Teslenko et al. 2010, Chen 2019a, b). The female subgenital plate of F. tau from Shaanxi Province of China is posteriorly truncate and with two posterolateral extensions (see fig. 20 in Klapálek 1912), but in F. dongruihangi, the plate has a shallow posterior notch and has no posterolateral extensions. The apically enlarged eversible paraproct lobe is similar to that of F. songi, but the broad basal cushion is absent in F. songi, and the chaetotaxy of terga 7–10 of the male differs between the two species (Chen 2019a). Aedeagus of F. dongruihangi seems similar to F. wusuensis and F. mongolica in having several small apical lobes, but the shapes of paraproct sclerite and female subgenital plate of F. dongruihangi apparently differ from the two latter species (Zwick 1997, Teslenko et al. 2010, Chen 2019b). In F. mongolica, the paraproct sclerite has a clear anterior margin along the finger-shaped apical projection (Fig. 7F); the eversible paraproct lobe is spinulose (Fig. 7F); the female subgenital plate is bilobed with a U-shaped deep notch (see fig. 9 in Teslenko et al. 2010). However, in F. dongruihangi, the paraproct sclerite has an obscure sinuous boundary separating the anterior expansion and the posterior projection (Fig. 7 A–B); the eversible paraproct lobe has dense wrinkles and short hairs instead of spinules (Fig. 7 C–E); the female subgenital plate is entire with a nearly truncate posterior margin (Fig. 9C). Remarks. The unnamed Filchneria species illustrated in Chen (2019b) was collected also from Heilongjiang Province. The two species have very similar pattern on head, pronotum and male terga 8–10, showing similar patches of sensilla basiconica on male terga 8–10 (Chen 2019a). The two species are also somewhat similar in the shape of paraproct sclerite and eversible paraproct lobe. However, that single male is insufficient for an accurate specific comparison, its female is needed to confirm its identity., Published as part of Chen, Zhi-Teng, 2020, Description of a new Filchneria (Plecoptera: Perlodidae), with supplementary illustrations for Taenionema japonicum (Plecoptera: Taeniopterygidae) from northeastern China, pp. 350-364 in Zootaxa 4808 (2) on pages 351-358, DOI: 10.11646/zootaxa.4808.2.7, http://zenodo.org/record/3933592, {"references":["Klapalek, F. (1901) O novych a malo znamych druzich palaearktick ych Neuropteroid. Rozpravy Ceske Akademie cis. Frantiska Josefa R., 10, 1 - 19.","Samal, J. (1935) Plecoptera. In: Visser, Ph. & Visser-Hooft, J. (Eds.), Wissenschaftliche Ergebnisse der Niederlandischen Expeditionen in den Karakorum und die angrenzenden Gebiete in den Jahren 1922, 1925 u 1929 / 30. Vol. 1. Brockhaus, Leipzig, pp. 221 - 225.","Navas, R. P. L. (1936) [1934] Schwedisch-chinesische wissenschaftliche Expedition nach den nordwestlichen Provinzen Chinas, Plecoptera. Arkiv for Zoologi, Uppsala, 27 A, 1 - 11.","Wu, C. F. (1938) Plecopterorum sinensium: A monograph of stoneflies of China (Order Plecoptera). Yenching University, Beijing, 225 pp.","Zhiltzova, L. A. (1971) The genus Filchneria Klap. and its position in the family Perlodidae (Plecoptera). Zoological Journal, 50, 1034 - 1040.","Teslenko, V. A., Zwick, P. & Bazova, N. V. (2010) Redescription of Filchneria mongolica (Klapalek, 1901) (Plecoptera, Perlodidae) based on type eggs and fresh material from the Selenga and Amur River Basins of Russia and Mongolia. Zootaxa, 2693 (1), 49 - 59. https: // doi. org / 10.11646 / zootaxa. 2693.1.4","Chen, Z. T. (2019 a) A new species and a new record of Perlodidae (Plecoptera) from China. Zootaxa, 4623 (1), 189 - 200. https: // doi. org / 10.11646 / zootaxa. 4623.1.13","Klapalek, F. (1912) Plecopteres I. Fam. Perlodidae. Collections Zoologiques du Baron Edm. de Selys-Longchamps, Bruxelles, 4, 1 - 66.","Zwick, P. (1997) Rauserella, a new genus of Plecoptera (Perlodidae), with notes on related genera. In: Landolt, P. & Sartori, M. (Eds.), Ephemeroptera & Plecoptera. Biology-Ecology-Systematics. MTL-Mauron + Tinguely & Lachat, S. A., Fribourg, pp. 489 - 496.","Chen, Z. T. (2019 b) A new brachypterous Filchneria and two new generic records for China, Arcynopteryx and Pictetiella (Plecoptera: Perlodidae). Zootaxa, 4679 (3), 511 - 526. https: // doi. org / 10.11646 / zootaxa. 4679.3.5"]}

A new species of the perlodid genus Filchneria Klapálek, F. dongruihangi sp. nov. is described and illustrated based on male and female from Heilongjiang Province of northeastern China. The new species is distinctive by the unique shape of female subgenital plate. Morphological comparisons are provided with related taxa. In addition, the taeniopterygid species, Taenionema japonicum (Okamoto) was collected from Jilin Province of northeastern China and supplemented with new illustrations.

Isoperla sextuberculata Huo & Du, sp. nov. General color yellowish to brown (Fig. 1). Head mostly yellowish except the areas between posterior ocelli to occiput are darker brown. Triocellate, anterior ocellus smaller than posterior ones. Antennae and palpi dark brown. Pronotum disc yellowish laterally and dark brown medially; rugosities present medially (Fig. 2). Legs yellowish, tibia brown. Wings hyaline, veins dark brown (Fig. 1). Male: Forewing length ca. 15 mm, hindwing length 13 mm, body length 13 mm. Abdomen brown and slightly sclerotized (Fig. 3). Terga 4���9 bearing a horizontal line of median erect hairs. A pair of hirsute processes presents on terga 4 (short and tuberculiform in shape), 7 and 8 (finger-like). Terga 5���6 with a pair of small lateral spots composed of darken setae (Figs. 3���4). Paraprocts short, triangular; membranous dorsally and slightly sclerotized ventrally, terminal upcurved and blunt (Fig. 5). Vesicle reduced as a dark spot on posterior margin of sternum 8, posterior margin with thicker median setae. Posterior margin of sternum 9 rounded (Fig. 6). Female: Forewing length ca. 15 mm, hindwing length 13 mm, body length 15 mm. Body coloration similar to male. Subgenital plate broadly triangular, terminal bilobed with an obscure median notch (Fig. 7). Egg: Unknown. Nymph: Unknown. Type material: Holotype: ♂, China, Hubei Province, Shennongjia area, Guitouwan, 2150 m, 110��08.872���E, 31��28.439���N, 2011-V-25 ~28, leg. Li Ze-Jian (Insect Collection of Yangzhou University); Paratypes: 2 ♀♀, the same data and locality as the holotype (Insect Collection of Yangzhou University). Distribution: China, Hubei Province. Etymology: Name of the species refers to the six processes on male terga. Diagnosis: The abdominal processes of the new species are unlike any other known species of Asian Isoperla and species currently placed in Kaszabia Rau��er, 1968 (Table 1). Unfortunately, it was not possible to examine the aedeagus of the single male, the holotype., Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new remarkable Isoperla species with abdominal processes from Hubei Province of Central China (Plecoptera: Perlodidae), pp. 552-558 in Zootaxa 4801 (3) on pages 553-554, DOI: 10.11646/zootaxa.4801.3.7, http://zenodo.org/record/3904767, {"references":["Rauser, J. (1968) 67. Plecoptera. Ergebnisse der zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei. Entomologishe Abhandlungen Staatliches Museum fur Tierkunde Dresden, 34, 329 - 398."]}

Sinoperlodes zhouchangfai Chen, sp. nov. Figs. 1���10. Adult habitus (Figs. 1���3). Head mostly dark brown, with scattered yellow pattern. Triocellate; anterior ocellus smaller than posterior ones, with a V-shaped anterior marking; each posterior ocellus with a pale lateral stripe, con- nected with yellow band behind each eye; interocellar area brown with an oval, yellow spot; occiput yellow with triangular medial yellow spot, two dark brown rugose areas extended to epicranial arms. Submental gills reduced. Antennae dark brown and slender, subequal in length to the body. Pronotum subquadrate, corners obtuse, generally dark brown except for the pale median stripe. Meso- and metanota mostly dark brown, median area pale; arms of the mesosternal ridge reaching posterior corners of the furcal pits, suture between basisternum and furcasternum indistinct. Macropterous in females but slightly shortened in the male, wings exceed abdominal apex. Wings dark brown, veins pale brown with unpigmented margins. Legs banded; femora and tarsi each with one pale area; tibiae with two pale areas; joints dark. Abdominal terga mostly dark brown; segments 1���5 divided into distinct terga and sterna by lateral pleural folds, segment 6 partially divided. Cerci slender, subequal in length to the abdomen, basal half pale, apical half brown, each segment with long bristles. Male (Figs. 1, 3���8). Body length ca. 12.5 mm; forewing length ca. 10 mm, hindwing length 9 mm. In the forewing, apical half with net-like, complex venation formed by apical branches of Sc, RA, RP, M, CuA and CuP; approximate ten crossveins present between C and Sc; anal area with six apical branches. In the hind wing, the apical net with fewer cells than forewing; anal area large, with 12 anal branches. Abdominal terga and sterna mostly dark brown; sterna 1���7 each with a diffuse pale spot medially, reducing in size to sternum 7. Terga 7���8 without conspicuous humps at posterior half, covered by dense sharp spines; tergum 8 with a pale median area bearing short spines. Tergum 9 with a pale anteromedial area bearing short spines, covered by dense sharp spines. Tergum 10 entire, moderately elevated at posterior half, posterior margin with an unelevated, small transverse membrane; anteromedial area pale with a fusiform median sclerite; posterior half covered with dense stout sensilla basiconica and sharp spines. Paraproct sclerites mostly covered by tergum 10, dorsal half weakly sclerotized with sparse bristles, ventral half darkly sclerotized with dense bristles; the eversible paraproct lobe short, elliptical in shape, apex rounded, with shallow scales and spinules anteriorly. The everted aedeagus membranous, apically with a large lobe which composed of five main posterior lobes and two slender lateral lobes. Female (Figs. 2, 9). Body length ca. 14.5 mm, color pattern generally similar to male. In the forewing, apical half with net-like, complex venation formed by apical branches of Sc, RA, RP, M, CuA and CuP; approximate 11 crossveins present between C and Sc; anal area with seven apical branches. In the hind wing, the apical net with fewer cells than forewing; anal area large, with 13 anal branches. Abdominal terga 1���8 with pale brown median areas, each segment with four small dark pits. Abdominal sterna mostly pale, sterna 2���5 with dark lateral sclerites. Sternum 8 with two large dark anterior sclerites. Subgenital plate originating from half-length of sternum 8, covering sternum 9. The subgenital plate broad and near elliptical, covered by short bristles, anterolateral margins sclerotized, lateral margins straight, posterior margin slightly arched. Sternum 9 with three dark oval spots, one of which present beneath the subgenital plate. Type material. Holotype: male, China: Zhejiang Province, Hangzhou City, Tianmu Mountain, Tianmu Stream (Fig. 10A), 30.3604 N, 119.4434 E, 580 m, 5 April 2020, leg. Zhi-Teng Chen (ICJUST). Paratypes: four females, same locality and data as holotype (ICJUST). Etymology. The species is named in honor of Prof. Chang-Fa Zhou (Nanjing Normal University) who has provided generous academic help to the author. Remarks. Egg morphology provide useful taxonomic characters for the Perlodinae (Stark & Szczytko 1984), but no mature eggs were found in the newly emerged females available to us. Most specimens of S. zhouchangfai were collected at night on a handrail near the habitat stream, when a light trap was set nearby (Fig. 10B). Only one female was found in the daytime, resting in shadow between rocks in the stream (Fig. 10 C���E). According to the sex ratio of the obtained specimens and the failure of obtaining any relevant larval specimens in a series of sampling sites along the habitat stream, we speculated the peak time of adult emergence was in March., Published as part of Chen, Zhi-Teng, 2020, Sinoperlodes, a new genus of subfamily Perlodinae (Plecoptera, Perlodidae) from coastal southeastern China, pp. 584-594 in Zootaxa 4779 (4) on pages 588-593, DOI: 10.11646/zootaxa.4779.4.9, http://zenodo.org/record/3856519, {"references":["Stark, B. P. & Szczytko, S. W. (1984) Egg morphology and classification of Perlodinae (Plecoptera: Perlodidae). Annales de Limnologie, 20, 99 - 104. https: // doi. org / 10.1051 / limn / 1984029"]}

Sinoperlodes Chen, gen. nov. Figs. 1���10. Diagnosis. Body size 12.5���14.5 mm (Figs. 1���2). Head brown, with a V-shaped anterior pale marking, a pale lateral stripe connecting each posterior ocellus with yellow band behind each eye, interocellar area brown with an oval, yellow spot; occiput yellow with triangular medial yellow spot; submental gills reduced (Fig. 3). Arms of the mesosternal ridges reaching posterior corners of the furcal pits, suture between basisternum and furcasternum indistinct (Fig. 3B). Legs banded (Figs. 1���3). Wings of male shortened, macropterous in females, dark brown, veins pale, contoured brightly, apical half with extremely complicated netlike venation formed by apical branches of Sc, RA, RP, M, CuA and CuP, anal area large (Figs. 1, 2, 4). Abdominal segments 1���5 divided into terga and sterna, segment 6 partially divided (Fig. 5). Tergum 10 of male entire, moderately elevated, posteromedially with small transverse membrane, covered with dense stout sensilla basiconica and sharp spines posteriorly (Fig. 6). Paraproct sclerite weakly sclerotized dorsally with sparse bristles; the eversible paraproct lobe short, elliptical, apex rounded (Fig. 7). Aedeagus membranous with seven small apical lobes (Fig. 8). Female subgenital plate elongated, broad, covering sternum 9 (Fig. 9B). Type species. Sinoperlodes zhouchangfai sp. nov., by monotypy. Etymology. The genus name is a combination of the words Sino and perlodes; the first Latin word means China, while the second word refers to the extant genus Perlodes, which is the type genus of Perlodidae. Affinities. Sinoperlodes undoubtedly belongs to subfamily Perlodinae by the male subanal lobes produced inward and upward, meeting each other along their mesal edges and blunt at the tips, and by the hind margin of tergum 10 elevated (Ricker 1952). Sinoperlodes is placed in the tribe Perlodini by its entire tergum 10 and unmodified sternum 7 in the male (Stark & Szczytko 1984). The entire tergum 10 and presence of eversible paraproct lobes (EPL) in the male, indistinct submental gills, arms of the mesosternal ridge reaching the posterior corners of furcal pits, and the indistinct suture between basisternum and furcasternum together supported Sinoperlodes to be included in the Perlodes group (Zwick 1997). The distinctly divided abdominal segments 1���5 and 6 partly indicate the similarity of Sinoperlodes with Megaperlodes Yokoyama, Isobe & Yamamoto, 1990 (Yokoyama et al. 1990, Teslenko 2015) and Rauserodes (Zwick 1997), both of which have 1���5 or 1���6 abdominal segments separated by pleural membrane on terga and sterna. Representatives of the two genera, other genera in the Perlodes group and the poorly known Chinese genus Hedinia have netlike venation on wing apex anteriorly, but wings of Sinoperlodes are distinctive and distinguished from genera of the Perlodes group by extremely complicated netlike venation formed by apical branches of Sc, RA, RP, M, CuA and CuP and large anal area. EPL of Sinoperlodes short and rounded, entirely fused with weakly sclerotized paraproct sclerite resembles that of Filchneria Klap��lek (1908), which also has short blunt EPL (Zwick 1997, Teslenko et al. 2010). Other special features of the new genus include the banded legs, membranous aedeagus bearing seven small apical lobes and broad and elongated female subgenital plate covering sternum 9, which also distinguish Sinoperlodes in the Perlodes group., Published as part of Chen, Zhi-Teng, 2020, Sinoperlodes, a new genus of subfamily Perlodinae (Plecoptera, Perlodidae) from coastal southeastern China, pp. 584-594 in Zootaxa 4779 (4) on pages 585-588, DOI: 10.11646/zootaxa.4779.4.9, http://zenodo.org/record/3856519, {"references":["Ricker, W. E. (1952) Systematic studies in Plecoptera. Indiana University Publications, Science Series, 18, 1 - 200.","Stark, B. P. & Szczytko, S. W. (1984) Egg morphology and classification of Perlodinae (Plecoptera: Perlodidae). Annales de Limnologie, 20, 99 - 104. https: // doi. org / 10.1051 / limn / 1984029","Zwick, P. (1997) Rauserella, a new genus of Plecoptera (Perlodidae), with notes on related genera. In: Landolt, P. & Sartori, M. (Eds.), Ephemeroptera & Plecoptera. Biology-Ecology-Systematics. MTL-Mauron + Tinguely & Lachat, S. A., Fribourg, pp. 489 - 496.","Yokoyama, N., Isobe, Y. & Yamamoto, S. (1990) Distribution of Megaperlodes niger gen. et sp. nov. (Perlodidae) in Yamagata Prefecture. Abstract of Papers from the 55 th Annual Meeting of the Limnological Society of Japan, Yamagata, 1990, 29 - 30. [in Japanese]","Teslenko, V. A. (2015) A new species of Megaperlodes Yokoyama et al. 1990 (Plecoptera, Perlodidae) from the South of the Russian Far East. Zootaxa, 3904 (4), 553 - 562. https: // doi. org / 10.11646 / zootaxa. 3904.4.4","Klapalek, F. (1908) Plecoptera. In: \" Filchner Expedition China Tibet \". Wissenschaftliche Zoologische-Botanische Ergebnisse, 10, 59 - 64.","Teslenko, V. A., Zwick, P. & Bazova, N. V. (2010) Redescription of Filchneria mongolica (Klapalek, 1901) (Plecoptera, Perlodidae) based on type eggs and fresh material from the Selenga and Amur River Basins of Russia and Mongolia. Zootaxa, 2693 (1), 49 - 59. https: // doi. org / 10.11646 / zootaxa. 2693.1.4"]}

Sinoperlodes zhouchangfai gen. nov., sp. nov. is described and illustrated on the basis of male and female adults from Tianmu Mountain, Zhejiang Province of southeastern China, representing the first record of subfamily Perlodinae in coastal southeastern China. The new genus is characterized by extremely complicated netlike venation on apical half of wings; an entire, moderately elevated tergum 10 of male which with small transverse membrane and posteriorly covered with sensilla basiconica and sharp spines; seven small apical lobes of aedeagus; short elliptical eversible paraproct lobes and banded legs. Female of the new genus is distinctive with an elongated, broad subgenital plate covering sternum 9.

Zhiltzovaia amabilis (Jewett, 1958) comb. nov. (Figs. 1���28) Jewett, 1958: 327, fig. 9 (Perlodes amabilis); Aubert, 1959: 86���88, figs. 81���86 (Perlodes (Skobeleva) cachemirica); Illies, 1966: 309 (Skobeleva cachemirica) (catalog); Illies, 1966: 512 (Perlodes amabilis) (catalog); Zwick, 1973: 229 (Filchneria amabilis comb. nov.) (catalog); Zwick, 1973: 229 (Filchneria cachemirica comb. nov.) (catalog); Jewett, 1975: 5, 7, figs. 4, 4A (Skobeleva amabilis); Zwick & Sivec, 1980: 112, Filchneria amabilis; Zhiltzova, 1994: 45���47, figs. 1���5 (Aubertiana cachemirica comb. nov.); Das, 1995: 36, (Skobeleva amabilis); ��zdikmen, 2008: 762 (Zhiltzovaia cachemirica comb. nov.); Chandra et al., 2019: 228 (Filchneria amabilis). Diagnosis. Head brown, with yellow M-shaped line, median interocellar area with a large tear-shaped yellow spot, widest anteriorly (Figs. 1, 3, 8, 14). The male of Z. amabilis is distinguished by the shape of the paraproct sclerite, which bears a small, narrow, truncated knob dorsally and larger rounded knob ventrally (Figs. 4, 5, 9, 11, 12), the eversible paraproct lobe (EPL) folded inside the paraproct (Figs. 4, 5, 9, 11) in repose. The everted EPL is a long finger-like membranous lobe with a sclerotized band dorsally (Fig. 12). The everted aedeagus is large, a membranous tube with a pair of lateral lobes at the base, two constrictions close to the tip, tip funnel-shaped (Figs. 10, 12). The female is distinguished by the shape of subgenital plate. It is short, wide, and slightly extended below sternum 8; a sclerotized pair of thin, obliquely-directed finger-like lobes posterolaterally; posterolateral edges rounded (Figs. 2, 6, 15). Lateral arms of meso-furcasternum short, not reaching anterior or posterior corners of furcal pits (Fig. 16). The egg of Z. amabilis triangular in cross section, each side swollen near the anterior pole (Fig. 17). Collar short, consists of two horizontal rims, both are flanged and irregularly incised (Fig. 18). Chorionic surface dotted with numerous, raised, large rounded globular bodies and tiny warts (Fig. 20). Adult habitus. Males are brachypterous (Fig. 7), females macropterous. Body brown, yellow and black, some areas glabrous (Fig. 7). Head brown, with a distinct yellow transverse M-shaped line interrupted at base, tentorial callosities on the clypeus yellow, a pair of yellow marks above the lateral ocelli with small black spots inside (Figs. 8, 14). Median interocellar area with a large tear-shaped yellow spot, widest anteriorly. Anterolateral margins of head with dark area extending from base compound eyes to the clypeus. Occipital area with a yellow transverse band connected medially and anteriorly forming a triangular medial area along the epicranial suture (Figs 7, 8, 14). Submental gills small. Antennae light brown, scape and pedicel dark brown, palpi yellowish. Pronotum brown with a broad median longitudinal light band (Figs. 7, 8 & 14), rugosites and meso- and metanota dark brown (Fig. 8). Lateral arms of meso-furcasternum short, not reaching anterior or posterior corners of furcal pits; dark beak-like spots at the inner edges of each furcal pit; transverse suture on mesosternum thin and light brown (Fig. 16). Abdomen covered with short brownish clothing hairs. Abdominal segments 1���3 divided by hairless pleural membrane laterally, remaining segments undivided. Legs with contrasting dark brown and yellow bands and spots, femur brown with a diffuse yellow band along outer edge and a yellow spot apically delimited with dark brown band. Tibia brown with diffuse darker brown band in the basal (Fig. 7) and a yellow spot basally. Cerci bicolored, segments with a thick transverse yellow bands basally, and thin dark brown lines on the apical margins (Figs. 7, 10, 15). Male. Body length 15.5���17.5 mm. Wings short. Fore wings reach the posterior margin of tergum 2, hind wings not exceed the posterior margin of tergum 4 (Fig. 7). Abdominal terga 7���8 dark, slightly depressed medially, swollen posterolaterally and densely covered with brown hairs. Tergum 9 deeply depressed medially with thin, light pigment area; paired transverse and rectangular yellow protrusions posteriorly, covered with thick sensilla basiconica and short fine hairs (Fig. 10). Sternum 9 brown, with oval pale patch medially, posterior margin scope-shaped, extending backward and curving upward, sub-equal to ⅓ length of sternum 10 (Figs. 7, 9, 10). Tergum 10 entire, pale, less sclerotized, with membranous narrow band along median line not reaching the posterior margin; in lateral view posteromedial margin up curved, obtusely angled and covered with two patches of reddish sensilla basiconica and sparse fine brown hairs (Figs 7, 9���11). Paraproct consists of sclerite and membranous eversible lobe (Figs. 9���12). Paraproct sclerite wide and heavily sclerotized basally, pointed distally, bears a small, narrow truncated knob dorsally and a large rounded knob ventrally (Figs. 9, 11, 12). In repose, eversible paraproct lobe is in-folded more than twice inside the paraproct and hidden (Fig. 11). The naturally everted EPL arises from a membranous fold near the narrow truncated knob of the sclerite, enlarges into a long finger-like membranous lobe, with a narrow sclerotized band along median surface, and the shape is curved upward (Fig. 12). Naturally everted aedeagus protrudes from the apex of sternite 10 as a membranous tube with a pair of lateral lobes at the base and two weak constrictions in the second half of the length (Figs. 7, 10, 12). The aedeagal apex is funnel-shaped with cuticular swellings (Figs. 7, 10, 12). Female. Body length 21.2���23.5 mm, macropterous, forewing length 20.6���21.4 mm, wingspan 44.0��� 45.8 mm. Wings darkly infuscated, outer half of fore wing grey brown, inner half hyaline with yellow veins, costal area mostly light yellow, venation includes an irregular net near the apex sometimes consisting of three rows of cells (Fig. 13). Four cross veins between C and Sc; two veins between Sc and R 1 (Fig. 13). Rs bears five apical branches, six veins between М and Cu 2 ; four anal veins (Fig. 13). Hind wings similarly colored, anal area large, A 2 and A 6 forked. Head and pronotum pigment patterns similar to male, anterior margin of head with large yellow and rectangular occipital spot (Fig. 14); yellow M-line sometimes interrupted at the two highest points; and clypeus with a solid yellow stripe with the apices directed forward. Abdominal terga brown; sterna yellowish-brown except sterna 1���3 which are brownish with lateral membranous pale folds. Sternum 8 with a pair of large oval and oblique dark brown spots anteromedially (Fig. 15). Subgenital plate pale medially, short, partially extending beyond sternum 8, posteriorly with thin transverse wrinkles which are concentrated at the base, posteromedial margin almost truncate; a distinct pair of thin obliquely directed finger-like lobes project posterolaterally; lateral margins rounded, sharply incurved in the posterior 1/3 with dark brown spots near the anterior margin and above the fingerlike lobes (Fig. 15). Abdominal sternum 9 unmodified, brown with a lateral pair of large, oval, dark brown spots. Egg. Trilateral (Fig. 17), size is 727 X 485 ��m, dark brown, heavily sclerotized. Longitudinal ridges delimit the three sides of the egg, each side swollen close to the anterior pole (Fig. 17). Anchor mushroom-shaped with short and strong pedicel (Figs. 17, 19), anchor plate entirely covered with dense globular bodies, the margin of the anchor covers the collar completely (Fig. 17). Collar short with two transverse rims, both are flanged and irregularly incised (Fig. 18). The sides of the collar between rims bear short longitudinal carinae (Fig. 18). A row of 3���6 micropyles is found near the swelling close to anterior pole on each side, orifices small with distinct short lips (Fig. 20). Chorionic surface dotted with numerous, raised, large globular bodies and tiny warts (Fig. 20). Larvae. Mature female length 26.7 mm. Color generally yellow-brown in dorsal view (Fig. 21). Body covered with short black clothing hairs, a dorsomesal band of erect silky white setae more pronounced on the head behind arms of ecdysial suture and thorax than on abdomen (Fig. 22). Antennae yellow. Head slightly wider than pronotum; M-line yellow, distinct; interocellar area brown with narrow oval central yellow spot, closed posteriorly (Figs. 21, 22), a small oval-shaped pale spot laterally from each posterior ocellus. Tentorial callosities on the clypeus above posterior ocelli pale. Occiput with brown reticulate markings posteriorly, a diffuse band of small light yellow spots close to epicranial arms and bordered sinuate brownish pattern behind each eye (Figs. 21, 22). A few small short and scattered spines in post-ocular row. Submental gills small, length 0.2 mm. Labrum yellow with light brown outer edge. Right lacinia (Fig. 23) bidentate, apically narrow, basal half expanded, with a small rectangular angle below subapical tooth bearing 3 stout marginal setae; marginal row of approximately 14 sparse stout setae along �� of inner margin; apical tooth about 0.4 times total outer lacinial length, subapical tooth about 0.5 times length of apical tooth; two long transparent axillary setae between bases of apical and subapical teeth; palm of lacina with a median ventral patch of more than 25 dark clothing setae. Galea reaches the base of the subapical tooth. Left mandible large (Fig. 24), strongly sclerotized and partially cleft, mandibular teeth without serrations, and a median patch of setae; a marginal band of golden acanthae extending from below the last small tooth to near the base (Fig. 24). Pronotum oval, brown with thin yellow lateral margins with a yellow pattern and dark clothing hairs (Figs. 21, 22); pronotal discs fringed with bristles of the mixed lengths, interrupted laterally and longer on anterior and posterior pronotal margins. Mesosternum Y���arms short not connected to the posterior corners of furcal pits. Meso- and metanota with yel- low median band widened posteriorly and with a few longitudinal narrow light yellow stripes, base of the wing pads brown (Fig. 21). Legs light brown, covered with black clothing hairs; femur with wide longitudinal yellow band close to outer margin and dark brown band distally; tibia with a short narrow and dark brown stripe basally (Fig. 28). Surface of femur and tibia with scarce brown bristles, inner margins of femora and tibia covered with short spine-like brown bristles. Outer margins of femur, tibia and tarsus with a fringe of fine, silky, colorless hairs (Figs. 21, 28). Abdominal terga brown with median dark brown stripe covered with a few short, stout, brownish bristles; segments 1���3 divided by hairless pleural membrane, remainder undivided, having a continuous posterior fringe of small brown setae. Terga 1���5 with a transverse row of six small, yellow spots grouped in three pairs anteriorly, this pattern is not obvious on terga 6���10 (Fig. 21). Paraprocts long, apex rounded. Cercus yellow-brown with dorsal fringe of fine silky and colorless setae, the setal length decreasing near apical segments (Figs. 21, 25���27). Cercal segments with an apical whorl of short brown setae, a few intercalary setae appeared on segments on apical half (Figs. 26, 27). Material examined. Perlodes amabilis Jewett, 1958. Paratype, female: Manali, 6500 ft, 25-VI-55, V. K. Gupta (SGJ, Jr.). North-West Himalaya, deposited in California Academy of Sciences, San Francisco, California, USA. Filchneria cachemirica Aubert, 1959. Holotype No 215. Male, Pakistan (NWFP), Besal, 10715 ft, 8���9.VII. 1953. F. Schmid leg. Skobeleva cachemirica det. J. Aubert, 1959. Perlodes cachemirica Aubert, 1959, Det. Aubert, 1959. Paratype No 117. Female, Pakistan (NWFP), Besal, 10715 ft, 24.VII. 1953. F. Schmid leg., Perlodes cachemirica Aubert, 1959, Det. Aubert, 1959. Skobeleva cachemirica det. J. Aubert, 1959. The holotype and paratype deposited in Cantonal Museum of Zoology, Lausanne, Switzerland. India: Unttarakhaand, Chamoli District: 2 nymphs, Nayachutii Vill., Ganges R. Basin, Alaknanda R., 1924 m a. s. l., 30��38.637��� N 79��32.019��� E, 10.05.2018. coll. D. Palatov; 4 ♂, 1 ♀, 2 nymphs, Ganges R. Basin, Badrinath, Rishi Ganga River, tributary of the Alaknanda R., 3128 m a. s. l., 30��44.444��� N 79��29.325��� E, 12.05. 2018, coll. D. Palatov; 3 ♂, 1 ♀, 1 nymph, 2 ex., below Badrinath, Ganges R. Basin, Alaknanda River, 3093 m a. s. l., 30��44.1726��� N 79��29.333��� E, 13.05.2018, coll. D. Palatov; Utar Pradesh: 1 ♀, 5 nymphs, Gobindghat, 1750���1900 m a. s. l., 30��37.5��� N 79��33.5��� E, 17��� 23.05.1999, coll. Yu. Marusik; Himachal Pradesh: 1 nymph, Darcha Vill., Bhaga River, Ind R. Basin, 2300���3400 m a. s. l., 32��40.6��� N 77��11.9��� E, 15.06.1999, coll. Yu. Marusik; 1 ♂, Rohtang Pass & Marhi Vill., 3800���3950 m a. s. l., 32��21.9��� N 77��14.7��� E, 03.06.1999. coll. Yu. Marusik. Tajikistan: 1♂, Gorno-Badakhshan A. R., Ishkoshim District, Panj R. Basin, Pamir R. Basin, an unnamed stream along the road Langar-Rachiv, steeply falls to the Pamir R., 3515 m a. s. l., 37��10.315��� N 72��44.371��� E, 30.06.2016, coll. D. Palatov. Distribution. Zhiltzovaia amabilis is considered an endemic to Asia with limited distribution in the high mountain belt of the transfer zone between the East Palaearctic and the Oriental regions (Zhiltzova 1994, Li & Mur��nyi 2015). It occurs in the Hindu Kush, Pamir, Karakoram and northwestern Himalaya Ranges (Tajikistan, Afghanistan, Pakistan, and northwest of India). Inhabits the streams and rivers of the alpine zone at 1750���3950 m a. s. l., width 1.5���20 m, bottom with rocky substrate, boulders, small stones, and pebbles; velocity 0.1���1.2 m /s, water temperatures 8���15��C; (high mountain sources in the Amu Darya, Indus, and Ganges R. Basins). Adults present in May���July. Comments. The holotype and paratype of A. cachemirica (Figs. 3���6) and the paratype of P. amabilis (Figs. 1, 2) agree well with the original descriptions by Aubert (1959) and Jewett (1958), respectively. The types are in good condition, although both descriptions are relatively brief and characteristic features of the internal structures were not originally described. Visible through the cleared integument of the holotype of A. cachemirica, is the folded EPL with a narrow sclerotized band (Fig. 5). There is a slight difference in the shape of the female subgenital plate of fresh material and original description of paratypes of A. cachemirica and P. amabilis, where the posteromedial margin bears a small lobe according to Jewett (1958) and Aubert (1959). Possibly, the appearance of a small medial lobe on the posteromedial edge of subgenital plate is associated with the laying of large eggs and the female maturity. Apparently, age and maturity of adults may also explain the differences in the color pattern of head and pronotum of the holotype of A. cachemirica (Fig. 3), which does not have a distinct pronotal yellow medial band; probably old specimens can be relatively dark, and unicolorous (Fig. 82 Aubert, 1959). Considering P. amabilis paratype characters such as the remarkable shape of the female subgenital plate, the color pattern of the head, pronotum, legs (Figs. 1, 2), and the relative proximity of the type locality to Kashmir, P. amabilis is transferred to Zhiltzovaia with the valid name Z. amabilis. Zhiltzovaia cachemirica, based on overlapping and agreement of characters of the respective original descriptions, is placed as a junior synonym of Z. amabilis., Published as part of Teslenko, Valentina A. & Palatov, Dmitry M., 2020, Redescription of the remarkable Zhiltzovaia amabilis (Jewett, 1958) comb. nov. (Plecoptera, Perlodidae) based on types and new material from Himalaya and Pamir Mountain systems, pp. 295-306 in Zootaxa 4767 (2) on pages 296-305, DOI: 10.11646/zootaxa.4767.2.5, http://zenodo.org/record/3771344, {"references":["Jewett, S. G. Jr. (1958) Entomological survey of the Himalaya. Part 23. Stoneflies (Plecoptera) from the north-west (Punjab) Himalaya. Proceedings of the National Academy of Science of India, Allahabad, 28 (4), 320 - 329.","Aubert, J. (1959) Plecopteres du Pakistan. Memoires de la Societe Vaudoise des Sciences Naturelles, 12 (3), 65 - 91.","Illies, I. (1966) Katalog der rezenten Plecoptera. Das Tierreich - Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen, 82, 1 - 631.","Zwick, P. (1973) Insecta: Plecoptera. Phylogenetisches System und Katalog. Das Tierreich 94. Walter de Gruyter, Berlin, xxxii + 465 pp.","Jewett, S. G. Jr. (1975) Records and descriptions of stoneflies from Northwest (Punjab) Himalaya and Mt. Makalu, Nepal Himalaya. Oriental insects, 9 (1), 1 - 7. https: // doi. org / 10.1080 / 00305316.1975.10434838","Zwick, P. & Sivec, I. (1980) Beitrage zur Kenntnis der Plecoptera des Himalaja. Entomologica basiliensia, 5, 59 - 138.","Zhiltzova, L. A. (1994) Aubertiana gen. n. - a new genus of stoneflies (Plecoptera: Perlodidae). Zoosystematica Rossica, 3 (1), 45 - 47.","Das, B. C. (1995) Plecoptera. In: Fauna of Western Himalaya, Uttar Pradesh, Himalayan Ecosystem Series. Vol. 1. The Director, Zoological Survey of India, Kolkata, pp. 35 - 36.","Ozdikmen, H. (2008) A new name for the preoccupied stonefly genus Aubertiana Zhiltzo, 1994 (Plecoptera). Munis Entomology & Zoology, 3 (2), 761 - 762.","Chandra, K., Gupta, D. & Ishtiaq, A. (2019) A Catalogue of Indian Stoneflies (Insecta: Plecoptera). Zootaxa, 4646 (2), 201 - 235. https: // doi. org / 10.11646 / zootaxa. 4646.2.1","Li, W. & Muranyi, D. (2015) A remarkable new genus of Perlodinae (Plecoptera: Perlodidae) from China, with remarks on the Asian distribution of Perlodinae and questions about its tribal concept. Zoologischer Anzeiger, 259, 41 - 53. https: // doi. org / 10.1016 / j. jcz. 2015.10.003"]}

Teslenko, Valentina A., Palatov, Dmitry M. (2020): Redescription of the remarkable Zhiltzovaia amabilis (Jewett, 1958) comb. nov. (Plecoptera, Perlodidae) based on types and new material from Himalaya and Pamir Mountain systems. Zootaxa 4767 (2): 295-306, DOI: 10.11646/zootaxa.4767.2.5

Filchneria amabilis (Jewett, 1958) is recognized as a species of Zhiltzovaia Özdikmen, 2008 with the valid name Zhiltzovaia amabilis (Jewett, 1958) comb. nov., and Z. cachemirica (Aubert, 1959) is placed as a junior synonym of that species. Zhiltzovaia amabilis is redescribed from new material collected from streams of Pamir, Tajikistan, and northwestern Himalaya, northern India. New illustrations of all life stages are presented.

Parisoperla oncocauda (Huo & Du, 2018), comb. nov. Isoperla oncocauda Huo & Du, 2018. Type locality: Tianmu Mountain, Zhejiang Province. Distribution: China (Zhejiang). Mature nymph: Body length c.a. 16 mm. Gills absent. Body covered with dark hair. Maculation of head and thorax typical of other Isoperlinae; M line and ecdysial line obvious. Mouthpart as shown in Fig. 3. Ventral tibial fringe absent. Wing pads subtriangular. Abdomen with a longitudinal pale band; paraprocts short; cerci long with setal fringe (Fig. 2). Material examined: 1 nymph, China, Zhejiang Province, Lin���an City, Tianmu Mountain Nature Reserve, Wuliting, 861m, 30��20.228���N, 119��26.136���E, 2018-IV-22, leg. Gao Peng. The same locality and data as holotype and paratypes of this species (ICYZU). Remarks: Only a single nymph available of the new genus from Tianmu Mountain was available for study. In the new genus, the Y-arms of the mesosternum and mandibles appear to be most similar to nymphs of Calliperla and Isoperla (Szczytko & Stewart 1984, Stewart & Stark 1993). The lacinia of P. oncocauda is similar to C. luctuosa (Banks, 1906) with the apex curved and inner margin straight (Szczytko & Stewart 1984), but the inner lacinial setal row of P. oncocauda is only present on the anterior apex angle, not reaching the base and sparser than C. luctuosa (about 8 thick setae and 20 fine hairs). No additional seta or setal patches occur on the surface of the lacinia., Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China, pp. 470-480 in Zootaxa 4718 (4) on page 471, DOI: 10.11646/zootaxa.4718.4.2, http://zenodo.org/record/3602634, {"references":["Huo, Q. B. & Du, Y. Z. (2018) A new species of the genus Isoperla (Plecoptera: Perlodidae) from TIANMU MOUNTAIN NA- TURE RESERVE, China. Zootaxa, 4504 (2), 276 - 284. https: // doi. org / 10.11646 / zootaxa. 4504.2.8","Szczytko, S. W. & Stewart, K. W. (1984) Descriptions of Calliperla Banks, Rickera Jewett, and Two New Western Nearctic Isoperla Species (Plecoptera: Perlodidae). Annals of the Entomological Society of America, 77, 251 - 263. https: // doi. org / 10.1093 / aesa / 77.3.251","Stewart, K. W., Stark, B. P. & Stanger, J. A. (1993) Nymphs of North American stonefly genera (Plecoptera). University of Texas press, Denton, Texas, 460 pp. https: // doi. org / 10.2307 / 3858188","Banks, N. (1906) On the perlid genus Chloroperla. Entomological News, 17, 174 - 175."]}

Parisoperla leigongshana Huo & Du, sp. nov. Male: Forewing length ca. 11.2 mm, hindwing length 10.2 mm, body length 9.8 mm; general color brown (Fig. 11). Head brown, ocellar and frontoclypeal area dark brown. Antennae and palpi brown. Pronotum disc brown, rugosities present medially (Fig. 12A). Legs brown; wings hyaline, veins dark brown. Abdomen dark brownish and slightly sclerotized. Posterior margin of tergum 10 darkly sclerotized, recessed medially and rearward, extending as a process, with wide lateral grooves on surface, and perpendicular to tergum 10 posteriorly (Fig. 12B, Fig. 13). Vesicle reduced as a patch of bristles on posterior margin of sternum 8 (Fig. 12C). Paraprocts slender and lightly sclerotized. Female: Unknown. Egg: Unknown. Nymph: Unknown. Type material: Holotype: ♂, China, Guizhou Province, Leigongshan Nature Reserve, beside an unnamed road, 1198m, 26.3616N, 108.1650E, 2018-IV-22, leg. Du Yu-Zhou, Chen Zhi-Teng. Etymology: The scientific name refers to the type locality. Diagnosis: This species can be distinguished by the slender paraprocts and the shape of posteromedial margin of male tergum 10. Remarks: This species is similar to P. kuankuoshuiensis, except for the longer process on male terminalia and smaller paraprocts (Fig. 14). It is also similar to P. oncocauda, but the sclerotized areas on terminalia are different in shape. The posteromedial margin of tergum 10 of the male of P. leigongshana is narrowed in dorsal view. Parisoperla oncocauda bears a process which is wider at posteromedial tergal margin and tapers distally., Published as part of Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China, pp. 470-480 in Zootaxa 4718 (4) on pages 477-478, DOI: 10.11646/zootaxa.4718.4.2, http://zenodo.org/record/3602634

A new genus of family Perlodidae, Parisoperla Huo & Du, gen. nov. is described including two new species from Guizhou Province in southwestern China. Both sexes of the new genus are characterized by the posterior margin of tergum 10 with a sclerotized process. The male membranous aedeagus is covered ventrally by patches of fine spines.

Parisoperla Huo & Du, gen. nov. Diagnosis: Small size, body length 10~ 15 mm; macropterous, wing length 10~ 15 mm, general color dark brown; triocellus, area between posterior ocelli to compound eyes yellow brown. Pronotum width twice its length, darkcolored medially with rugosities, with a smooth longitudinal band present among the centerline. Terga 9–10 of male heavily sclerotized posteriorly, posteromedial margin of tergum 10 undivided, with a developed sclerotized process (Fig. 1 A–B) with wide lateral grooves on surface. Vesicle on sternum 8 reduced. Aedeagus membranous, short columnar, without any sclerites but covered ventrally by patches of fine spines. Female coloration similar to male, posterior margin of tergum 10 usually sclerotized and extending as a process like the male (Fig. 1 C–D). Subgenital plate rounded or short triangle, often with a median notch apically. Type species: Parisoperla oncocauda (Huo & Du, 2018). Etymology: This name indicates “ Para -” and “ Isoperla ”, means that “similar to Isoperla ”. Remarks: We previously treated P. oncocauda as a species of Isoperla Banks, 1906 based on the wing venation (Banks 1906) and aedeagal morphology (Sandberg & Kondratieff 2013, Szczytko & Kondratieff 2015). The wing venation and the paraprocts of Parisoperla are most similar to Isoperla, indicating a placement in the subfamily Isoperlinae. Within the Isoperlinae, several genera such as Calliperla Banks, 1948, Cascadoperla Szczytko & Stewart, 1979, Clioperla Needham & Claassen, 1925, Cosumnoperla Szczytko & Bottorff, 1987, Kaszabia Raušer, 1968 and Mesoperlina Klapálek, 1921 are also similar to the new genus. However, the male tergum 10 of Clioperla and Mesoperlina is cleft. The male of Kaszabia can be distinguished by a pair of tergal processes of the abdomen (although these processes are not a unique character of this subfamily, present also I. distincta Nelson, 1976 a Nearctic species of Isoperla) (Teslenko & Zhiltzova 2009, Judson & Nelson 2012, Szczytko & Kondratieff 2015); The monotypic Calliperla from western North America has the male tergum 10 short and broad, crescent-shaped, with a terminal process as well, but the process curving forward and upward, just as similar as Cosumnoperla. The aedeagus of Calliperla and Cosumnoperla are more complex in structure than the new genus (Bottorff 2007, Szczytko & Stewart 1984). Discussion: Geographically, the 15 known Chinese Isoperla species are mainly distributed in Palaearctic Region of China. Whereas Parisoperla is apparently restricted to Guizhou and Zhejiang provinces, which are considered the northern portion of the Oriental Region (Ma 1959, Zhang 2011). Therefore, we speculate that the genus may be an Oriental group of stoneflies.

Morphological key to mature larvae) (> 8 mm) of Dictyogenus The larva of Dictyogenus fontium was first described by Kühtreiber (1931), but erroneously listed under the name of D. alpinum, as the same author later (1934) recognizes when providing descriptions of both species. The single major criterion used by him for separating both species hinges on the presence (D. alpinum) or absence (D. fontium) of a row of erect medio-dorsal setae on the pronotum. This criterion, however, only separates the larvae of the Dictyogenus fontium species complex from the group composed of D. alpinum, D. jurassicum and D. muranyii. As can be inferred from the descriptions of the two new species in the present contribution, the setation patterns of the medio-dorsal row of setae on the pronotum as well as on the mesonotum, metanotum and abdominal terga in the genus Dictyogenus are far more complex. We have also noted that early instar larvae continue to undergo important morphological changes prior to reaching 8 mm body length. Prior to this size they are impossible to identify to species. 1 Pronotum with medio-dorsal setae (Figs. 13, 40, 41, 65, 71). Postero-dorsal edge of the femora and tibiae with a fringe of dense silky hair setae (Figs. 15, 42, 70) …………………… 2 1’ Pronotum devoid of medio-dorsal setae (Figs. 85, 86). Postero-dorsal edge of femora and tibiae with a fringe of sparse silky hair setae (Fig. 87) ……….. Dictyogenus fontium species complex (not keyed) 2 Medio-dorsal setae on pronotum, mesonotum, metanotum and abdominal terga very long, erect, dense and continuous, extending to the occiput of the head (Figs. 65, 71). Interocellar area with a wide yellow patch, trident-shaped (Figs. 62, 63). Lateral ocelli with circum-ocellar yellow patch (Fig. 63). A large, elliptical, yellow patch above each lateral ocellus (Figs. 62, 63). M-line curved and well visible (Figs. 62, 63). Upper margin of stipes with numerous (7- 25) spines arranged in several rows (Fig. 69). Pronotum markedly trapezoidal with straight sides (Fig. 63). Paragenital plates, in ventral view, with numerous spines (3-20, average 15) per side (Fig. 68). Cerci with medio-dorsal row of swimming hairs of dense and compact, twice as long as the width of the cercus (Fig. 67) …………………………... Dictyogenus alpinum 2’ Medio-dorsal setae on pronotum, mesonotum, metanotum and abdominal terga less dense, often with interruptions (Figs. 13, 14, 15, 40, 41). Postero-medial part of head without setae, but only with a few long spines (Figs. 40, 41). Upper margin of stipes with fewer spines (1- 13) arranged in a single row (Fig. 45). Paragenital plates, in ventral view, with fewer, generally unpaired, spines or else devoid of spines (Figs. 17, 44). Cerci with medio-dorsal row of swimming-hairs only slightly longer than the width of the cercus (Figs. 16, 43) …………………………………… 3 3 Medio-dorsal setae on pronotum short and scattered, arranged as two loosely demarcated rows (Fig. 13). Interocellar area pale yellow, narrow with well demarcated contours (Figs. 10 and 11). Pronotum ovoid in shape (Fig. 11). Endemic to the Jura Mountains...................................... Dictyogenus jurassicum 3’ Medio-dorsal setae on pronotum longer, but dense, sometimes covering only its lower half (Figs. 40, 41). Interocellar area with wide, pale yellow, keyhole-shaped area (Fig. 37, 38). Pronotum nearly trapezoidal in shape (Figs. 37, 39). Endemic to the Chartreuse and Vercors massifs ………. Dictyogenus muranyii, Published as part of Reding, Jean-Paul G., Launay, Bertrand, Doaré, Jacques Le, Ruffoni, Alexandre & Vinçon, Gilles, 2019, Two New Species Of Dictyogenus Klapálek, 1904 (Plecoptera: Perlodidae) From The Jura Mountains Of France And Switzerland, And From The French Vercors And Chartreuse Massifs, pp. 27-64 in Illiesia 15 (2) on pages 51-52, DOI: 10.5281/zenodo.4761285, {"references":["Kuhtreiber, J. 1931. Neue Plekopterenlarven. Sitzungsberichte der Akademie der Wissenschaften in Wien, Abteilung I, Mathematisch-naturwissenschaftliche Klasse, 140: 605 - 618, 1 map. https: // www. zobodat. at / pdf / SBAWW _ 140 _ 060"]}