Tibetisoperla wangluyui Huo & Du, 2021

Huo, Qing-Bo & Du, Yu-Zhou, 2021, A new genus of Isoperlinae (Plecoptera: Perlodidae) from Tibet, China, Zootaxa 4996 (2), pp. 343-352 : 344-350

publication ID	https://doi.org/ 10.11646/zootaxa.4996.2.8
publication LSID	lsid:zoobank.org:pub:E6B3D0E6-8904-4A25-8D1D-0A7F5CB1A625
DOI	https://doi.org/10.5281/zenodo.5070051
persistent identifier	https://treatment.plazi.org/id/03D487C7-FF89-FFFB-2890-FE1D1DA2F97A
treatment provided by	Plazi
scientific name	Tibetisoperla wangluyui Huo & Du
status	sp. nov.

Treatment

Tibetisoperla wangluyui Huo & Du View in CoL , sp. nov.

( Figs. 1–11 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 )

Adult habitus: General color dark brown to black ( Figs. 1 View FIGURE 1 , 8 View FIGURE 8 ). Head mostly dark brown except the occiput paler. Triocellate, anterior ocellus smaller than posterior ones ( Figs. 2A View FIGURE 2 , 9A View FIGURE 9 ). Antennae and palpi dark brown. Pronotum disc rectangular (length/width = 1/1.4), black laterally and dark brown medially; rugosities present laterally ( Figs.2A View FIGURE 2 , 9A View FIGURE 9 ). Legs dark brown ( Figs. 1 View FIGURE 1 , 8 View FIGURE 8 ). Wings hyaline. Veins and thoracic sterna similar to Isoperla , typical of this subfamily ( Figs. 2A View FIGURE 2 , 3A–B View FIGURE 3 ).

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 View FIGURE 3 ). 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 View FIGURE 4 ). Vesicle reduced to a dark semicircle on posterior margin of sternum 8 ( Fig. 4E–F View FIGURE 4 ). Paraprocts developed and sclerotized, apex with a separate hemispheric sclerite with patch of spines ( Figs. 5–6 View FIGURE 5 View FIGURE 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 View FIGURE 7 ).

Female: Forewing length 10.7 mm, hindwing length 9.1 mm, body length 10.0 mm. Body coloration similar to male ( Figs. 8 View FIGURE 8 , 9A View FIGURE 9 ). 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 View FIGURE 9 ).

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 View FIGURE 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 GoogleMaps . 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps . Leg. Wang Lu-Yu, Liu Piao, Yuan Tao, Hou Yan-Meng .