Rhyacophila scissa

Sun, Chang-Hai, 2016, Notes on the Rhyacophila scissa species group with description of two new taxa from China (Trichoptera, Rhyacophilidae), Zootaxa 4072 (4), pp. 441-452 : 442-443

R. scissa Diagnostic Species Complex

The R. scissa Diagnostic Species Complex can be distinguished by the following male genitalic characteristics: (1) segment X in dorsal view has its apex deeply incised; (2) the upper branch of the second joint of each inferior appendage is slender, about 1/3 as wide as the lower branch. This Complex contains 9 previously described species.

Seven species of the Complex are distributed without doubt in the Oriental Region ( Fig. 1 ). Two Nepalese species, R. steinmanni at an elevation of 1850 m and R. kisszoltani at 2835 m ( KISS 2013), occur only in HOFFMANN’s (2001) transition zone.

Figures

FIGURE 1. Distribution map of species in the Rhyacophila scissa Diagnostic Species Complex of the R. scissa Species Group. B = Bhutan; Ba = Bangladesh; Ca = Cambodia; Ch = China (P. Ch = Palaearctic China, O. Ch = Oriental China); I = India; L = Laos; M = Myanmar; N = Nepal; T = Thailand; V = Vietnam. — · · — = boundary between the Palearctic and Oriental Regions in China. Most of Palaearctic China is omitted in the map.