Parisoperla leigongshana Huo & Du, 2020

Huo, Qing-Bo & Du, Yu-Zhou, 2020, A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China, Zootaxa 4718 (4), pp. 470-480 : 477-478

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.

Figures

FIGURE 11. Parisoperla leigongshana Huo & Du, sp. nov., adult.

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.

FIGURE 14. Comparison on male terminalia of Parisoperla leigongshana and P. kuankuoshuiensis, lateral view.