Styloperla spinicercia Wu, 1935

Huo, Qing-Bo, Zhao, Meng-Yuan, Du, Yu-Zhou, Murányi, Dávid, Zhu, Bin-Qing & Yu, Lei, 2023, The intraspecific morphological variability of Styloperla Wu, 1935 (Plecoptera: Styloperlidae), Zootaxa 5249 (1), pp. 125-137 : 128

Styloperla spinicercia Wu, 1935

Styloperla spinicercia: Wu, 1935: 237 ; Uchida & Isobe, 1989: 158; Stark & Sivec, 2007: 15; Yang & Li, 2018: 55.

Materials examined: The specimens re-studied from Guangxi, Guizhou, and Jiangxi were recorded in Zhao (2019) and Zhao et al. (2019).

Distribution: Fujian, Guangdong, Guangxi, Guizhou, Jiangxi and Zhejiang.

Remarks: The shorter process lateral to the basal cercal segment has forks of different sizes and shapes and on some males are asymmetric ( Fig. 5A–C ). The small lateral spines present along the longer medial process on basal cercal segment varies in distance from the apex, sometimes as much as two-fold ( Figs. 6A–B ). In one particular male, the left and right process on basal cercal segment are completely asymmetric, with one side having a shape similar to that of specimens ( Zhao et al. 2019, Mo et al. 2022) previously determined as S. jiangxiensis ( Figs. 6C – D ).

Figures

FIGURE 5. Styloperla spinicercia from Guangxi (Longsheng), male cercus from different individuals with asymmetrical cercal processes.

FIGURE 6. Styloperla spinicercia, male cercus from different individuals.A–B: male from Guizhou (Mount Fanjing), the left long process with double subapical spines; C–D: male from Guangxi (Jinxiu), process on basal cercal segment is completely asymmetrical.