A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China Author Huo, Qing-Bo Author Du, Yu-Zhou text Zootaxa 2020 2020-01-08 4718 4 470 480 journal article 24412 10.11646/zootaxa.4718.4.2 f8aa10b4-d50c-4c18-963c-26354159860e 1175-5326 3602634 B370EB90-C167-45DE-A93E-D0C39DDE4ECF Parisoperla kuankuoshuiensis Du & Huo , sp. nov. Male: Forewing length ca. 11.5 mm , hindwing length 13.0 mm, body length 12.5 mm ; general color dark brown ( Fig. 5 ). Head mostly dark brown except the areas between posterior ocelli to compound eyes are yellow brown. Antennae and palpi brown. Pronotum disc dark brown to black, rugosities present medially, and the smooth longitudinal band among the centerline not striking ( Fig. 6A ). Legs dark brown, femora becoming pale basally; wings hyaline, veins dark brown. Abdomen dark brown 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. 6B ). Vesicle reduced as a pale spot on posterior margin of sternum 8 ( Fig. 6C ). Paraprocts sclerotized, distally swollen, with a basal sclerotized bar; apex ending with a short papillary cone ( Fig. 7 ). Aedeagus membranous, without conspicuous sclerites; ventrally extending laterally into a pair of ridges with a median round knob; bearing a patch of basal and median ventral spines except the apex ( Figs. 8–9 ). FIGURE 7. Parisoperla kuankuoshuiensis Du & Huo , sp. nov. , male terminalia and paraprocts, dorsal view. FIGURE 8. Parisoperla kuankuoshuiensis Du & Huo , sp. nov. , aedeagus. A: dorsal view; B: lateral view; C: ventral view. Female: Forewing length 15.0 mm, hindwing length 14.0 mm, body length 13.5 mm . Body coloration similar to male ( Fig. 10 A–B). Abdomen yellowish, posterior margin of tergum 10 darkly sclerotized and extending as a process similar to male. Subgenital plate broadly rounded, terminal with an obscure median notch ( Fig. 10C ). Egg: Unknown. Nymph: Unknown. Type material: Holotype : ♂ , China , Guizhou Province , Kuankuoshui National Nature Reserve , beside a name- less road, 1435m , 28°13.205′N , 107°9.95′E , 2019-V-5 , leg. Huo Qing-Bo, Yuan Jia-Wen , Du Yu-Zhou . Paratypes : 1♂ , 1♀ , the same locality and data as holotype . FIGURE 9. Parisoperla kuankuoshuiensis Du & Huo , sp. nov. , spines on the aedeagal surface. Etymology: The scientific name refers to the type locality. Diagnosis : The new species can be distinguished by the developed, swollen male paraprocts and the ventral rounded knob of the aedeagus.