Amphinemura unihamata (Wu, 1973)

Li, Weihai, Mo, Raorao, Dong, Wenbin, Yang, Ding & uranyi, David, 2018, Two new species of Amphinemura (Plecoptera, Nemouridae) from the southern Qinling Mountains of China, based on male, female and larvae, ZooKeys 808, pp. 1-21 : 12-14

Amphinemura unihamata (Wu, 1973) Figs 29, 30, 35

Description of the female.

(Fig. 29) Forewing length 9.0-9.6 mm. Sternum VII posteriorly produced in a wide but short, semicircular pregenital plate, the plate pale. Sternum VIII forms trapezoid subgenital plate that is about half as wide as the segment, posterior lobes distinctly divided into rounded sublobes, nearly equal in size; posteromedial indentation narrow and triangular, with white medial area widened towards anterior edge. Paragenital plate large, rounded, but pale and rather indistinct. Sternum IX with anterior margin slightly protruded medially. Paraproct and cerci brown.

Female inner genitalia (Fig. 30): Inner structure consist of a beak-like, dark median sclerite positioned under pregenital plate at the anterior edge of subgenital plate, is simple and a smaller but thick, ring-shaped anterior shield attached to the spermathecal ductus; membranous portion wide and attached to the paragenital plates.

Material examined.

CHINA, Shaanxi Province, Hanzhong, Foping County, steep forest brook in Panda valley, 1270 m, 33°40.322'N, 107°58.190'E, 2018. IV.20, leg. W.H. Li, R.R. Mo and D. Murányi: 1 male (HNHM); Shaanxi Province, Hanzhong, Foping County, brook in Lover’s Valley by Foping Old Town, 885 m, 33°31.838'N, 107°59.432'E, 2018.IV.21, leg. W.H. Li, R.R. Mo and D. Murányi: 2 females (HNHM); same brook and date, a few hundred meters downstream, 870 m, 33°31.819'N, 107°59.335'E: 1 male (HIST), 1 female (HNHM).

Distribution and ecology.

Previously, this species was known only from the holotype, collected in Sichuan. It was recently redescribed by Yang et al. (2015). We found it at the type locality of A. dingoidea (Figs 31, 32) and a similar small brook at slightly higher elevation, representing its first records from Shaanxi.

Remarks.

Amphinemura annulata Du & Ji in Ji et al., 2014 was described one year earlier before the specific identity of A. unihamata was resolved by Yang et al. (2015). The holotype of A. annulata was designated from Zhejiang Province but the paratype series included specimens also from Shanxi, Shaanxi, and Guizhou provinces. The two species are probably conspecific, but without examination of holotype of A. annulata , we do not propose a synonymy of A. unihamata at this time.