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 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.