Sphaeronemoura songshana Li et Yang, 2009

Zhao, Meng-Yuan & Du, Yu-Zhou, 2020, A new species of Sphaeronemoura (Plecoptera: Nemouridae) from China and additions to three other species of the genus, Zootaxa 4851 (3), pp. 583-592 : 585-588

Sphaeronemoura songshana Li et Yang, 2009

Sphaeronemoura songshana: Li et Yang, 2009 . Zootaxa, 2004: 60.

Sphaeronemoura songshana: Yang, Li & Zhu, 2015 . Fauna Sinica Insecta , 58: 331.

Sphaeronemoura songshana: Li, Dong & Yang. 2018 . Zootaxa, 4402 (1):158.

Sphaeronemoura songshana: Yang & Li, 2018 . Species Catalogue of China. Vol. 2. Animals, Insecta (III), Plecoptera , 18. Type locality: China, Beijing Province (Yanqing, Songshan)

Material examined: 1♂, China, Hebei Province, Xiaowutai Mountain , 1300 m, 2005-VIII-22, leg. Xiao Chun-Xia, Liu Jing-Xian ( ICYZU) .

Distribution: China (Beijing, Hebei).

Adult habitus: Head and pronotum as Fig. 4 . Male body length 8.0 mm, forewing length 9.0 mm, hindwing length 7.5 mm. Tergum 8 posteromedially expanded and forming a wide and long hood reaching over ½ of tergum 10. Tergum 9 concaving sharply at median part posterior margin. Paraprocts divided into 3 lobes, inner lobe simple; median lobe broad at base and then branched into two portions, inner portion plump, slightly sclerotized, a little longer than inner lobe of epiproct, outer portion membranous and gently projected posteriorly to flat blunt projection; outer lobe linearly and darkly sclerotized ( Fig. 3 ). Epiproct with flagellum 2.5X length, grooved dorsomedially, apex of the flagellum arcuate; dorsal sclerite with a notch at the tapering tip, base of dorsal sclerite slightly sclerotized; ventral sclerite wider than dorsal sclerite, about ⅔ length of dorsal sclerite, with a notch median of apex, bearing several setae sporadically ventrolaterally ( Figs. 3 , 5 , 6 ).

Remarks: Our single male from Hebei Province is slightly different from specimens taken from the Beijing area. The wide hood of posterior margin of tergum 8 appears distorted and the shape outer lobe of paraprocts appears different. At present, we consider these differences as intraspecific variability. Additionally, several females (5♀♀, China, Hebei Province, Xiaowutai Mountain, 1300 m, 2005-VIII-22, leg. Xiao Chun-Xia, Liu Jing-Xian) collected with our single male are different from the female of S. songshana from Beijing ( Fig. 7 ). These females are not considered conspecific since not all the females of Sphaeronemoura are known, and left as unidentified.

Figures

FIGURE 3. Sphaeronemoura songshana. A: Male terminalia, dorsal view; B: Male terminalia, ventral view; C: Male terminalia, lateral view; D: Male paraproct (left); E: Male epiproct, dorsal view; F: Male epiproct, ventral view; G: Male epiproct, lateral view; H: Female abdomen, ventral view.

FIGURE 4. Sphaeronemoura songshana. Male prothorax, cervical gills, ventral view.

FIGURE 5. Sphaeronemoura songshana. Male terminalia, A: dorsal view; B: ventral view (the flagellum was broken during the examination).

FIGURE 6. Sphaeronemoura songshana. Male epiproct and cercus, lateral view.

FIGURE 7. Sphaeronemoura sp. A-B: Female abdomen, ventral view.