Neoperla fanjingshana Yang & Yang, 1992

(Figs. 25–26)

Neoperla fanjingshana Yang & Yang, 1992: 63; Du, Sivec & He, 1999: 62; Yang & Li, 2018: 39; Mo, Liu, Li & Shi, 2020: 375.

Supplementary description. Tergum 6 bears a few posterior sensilla basiconica, further terga agree with the original description (Fig. 25c, 26a). Aedeagus (Figs. 26b–26e) mostly membranous. Aedeagal tube (Figs. 26b–26c) nearly straight, only dorsal surface sclerotized. Aedeagal sac (Figs. 26b–26e) slightly longer than tube and strongly curved ventrally, and in our only specimen it forms a loop looking like a lowercase “b”; dorsal surface of basal half irregularly covered with scattered brown spines, but its ventral surface bare; near sac apex lateral spines become large, dark with a broad base and hooked apex, occurring in two groups, one of 3–4, the more distal of 2; apex of sac with a H-shaped, dark uneverted sclerite (Fig. 26e), dorsal surface covered in a field of smaller spinules.

Material examined. 1 male (HIST), China: Guangxi, Laibin City, Jinxiu Yao Autonomous County, Dayaoshan National Natural Reserve, Yinshan Park, 24°10'07" N, 110°14'38" E, 1129 m, 2020.VI.11, light trap, Mo RR, Lai Y et al .

Distribution. China (Guangxi and Guizhou).

Remarks. This species was originally described from Fanjing Mountain of Guizhou Province by Yang and Yang (1992). However, the aedeagal sac of the holotype was not everted and described. Other aspects from the original description agree well with the Guangxi specimen (compare Figs. 25–26 with fig. 2 in Yang & Yang 1992). The only difference is that our male specimen has a few sensilla basiconica on tergum 6 posteromedially, which are easy to overlook. This species is a member of the Neoperla montivaga group, sinensis species subgroup as defined by Li & Yan (2021), having a pair of apical sclerites of aedeagal sac. The recently described Neoperla annulatispina Mo, Li & Wang, 2021 from Guangdong Province also fit the definition of this subgroup and can be included. Neoperla fanjingshana is first recorded from Guangxi in the present study.