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 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. FIGURE 12. Parisoperla leigongshana Huo & Du , sp. nov. , male. A: head and pronotum; B: terminalia, dorsal view; C: terminalia, ventral view. FIGURE 13. Parisoperla leigongshana Huo & Du , sp. nov. , male terminalia, dorsal view. 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.