Styloperla Wu, 1935

Stark, Bill P. & Sivec, Ignac, 2007, A Synopsis Of Styloperlidae (Insecta, Plecoptera) With Description Of Cerconychia Sapa, A New Stonefly From Vietnam, Illiesia 3 (2), pp. 10-16 : 12

Styloperla Wu, 1935

Wu (1935) proposed Styloperla for S. spinicercia but the holotype is missing ( Uchida & Isobe 1989) and paratype specimens retained in China were also apparently destroyed, consequently this species is known from the figures and descriptions provided by Wu (1935, 1938). Chao (1947) added S. inae and S. wui from Fujian Province and these were redescribed by Uchida & Isobe (1989). These authors also transferred two species, Cerconychia flectospina ( Wu 1962) and Nogiperla obtusispina ( Wu 1973) to the genus. Subsequently, Yang & Yang (1990) described S. jiangxiensis . Males of the genus are distinguished from those of Cerconychia by a longitudinally oriented hair brush on sternum 9 and females by the presence of vaginal sclerites.