Contribution to the knowledge of Neoperla (Plecoptera: Perlidae) from Hainan Province of China Author Chen, Zhi-Teng Author Du, Yu-Zhou text Zootaxa 2016 4144 2 243 252 journal article 10.11646/zootaxa.4144.2.6 02de6342-d4bb-47c0-9675-474c54689576 1175-5326 264488 C96FA109-D9C0-40D0-BC00-F049C93B188B Neoperla bicornuta Yang & Yang, 1995 Neoperla bicornuta Yang & Yang, 1995 . Acta Agric. Univ. Pekinensis. 21: 224. Type locality: Hainan Province , Jianfengling. Diagnosis. Males of this species are characterized by tergum 7 having a subtrapezoidal process, the process with a pair of cornuted lobes laterally (see fig. 3 in Yang & Yang 1995 ). Distribution. China ( Hainan ).