Corynoneura Winnertz from East Asia, with a systematic review of the genus (Diptera: Chironomidae: Orthocladiinae) Author Fu, Yue Author Saether, Ole A. Author Wang, Xinhua text Zootaxa 2009 2287 1 44 journal article 10.5281/zenodo.191288 351d5342-2f03-40b4-85b9-2f3508205d3b 1175-5326 191288 Corynoneura sorachibecea Sasa et Suzuki ( Figs 18 A–C) Corynoneura sorachibecea Sasa et Suzuki, 2001 : 7 . Material examined. JAPAN : Hokkaido, Sorachi River, Sorachi, sweep net, male holotype (No.404: 69), 5.ix.2000 , H. Suzuki. Diagnostic characters. The species can be separated from other East Asian Corynoneura by having antenna with 10 flagellomeres, apically acute, AR 0.56–0.61, sternapodeme inverted V-shaped, phallapodeme strongly curved, no inferior volsella, gonostylus with small inner lobe in subapical part. Additional description and corrections. Abdominal tergites with few setae, 0 on T I, 2 on each of T II– IX, while in the original description Sasa & Suzuki (2001) mentions abdominal tergites with small number of setae, 0 on I, 1 on II to IV, 2 on VI and VII, 1 on VIII, and 2 on IX. The ninth tergite without an anal point like Y-shaped ridge on the ventral side. The ventral Y-shaped ridge mentioned by Sasa apparently is the phallapodeme. Some additional characters should be added: Tentorium 125 µm long, 13 µm wide. Sternapodeme inverted V-shaped; coxapodeme 30 µm long; attachment point with phallapodeme placed in caudal position of sternapodeme and ventrally directed; phallapodeme 75 µm long, strongly curved with projection for joint with sternapodeme placed pre-lateral. Gonocoxite 80 µm long with 4 long setae apically. Gonostylus 38 µm long; megaseta very short. HR 2.1, HV 3.3. The wing and hypopygium of holotype are redrawn ( Figs 18 A–C). Distribution. Japan .