Corynoneura tokarapequea Sasa et Suzuki

Fu, Yue, Saether, Ole A. & Wang, Xinhua, 2009, Corynoneura Winnertz from East Asia, with a systematic review of the genus (Diptera: Chironomidae: Orthocladiinae), Zootaxa 2287, pp. 1-44 : 33-34

Corynoneura tokarapequea Sasa et Suzuki

( Figs 19 A–B)

Corynoneura tokarapequea Sasa et Suzuki, 1995: 282 .

Material examined: JAPAN: Kagoshima Prefecture, Nakanoshima Island, sweep net, male holotype (No.289: 36), 20.v.1994, H. Suzuki.

Diagnostic characters. The species can be separated from other East Asian Corynoneura by having antenna with 11 flagellomeres, AR 0.62; sternapodeme inverted U-shaped; phallapodeme short, almost straight; gonocoxite with well triangular superior volsella; and nearly rectangular inferior volsella.

Additional description and corrections. The anal point is absent and the gonocoxite has a well developed superior volsella and a rectangular inferior volsella, while the original description by Sasa & Suzuki (1995) mentions a triangular anal point and a gonocoxite with two inner lobes. The original description mentions a mid leg ratio of 0.57 while we found 0.61. Some additional characters should be added: Tergites I–V yellow, tergites VI–IX brown. Tentorium 125 µm long, 18 µm wide. Sternapodeme inverted U-shaped; coxapodeme 25 µm long; weak attachment point with phallapodeme placed in caudal position of sternapodeme and caudally directed; phallapodeme 35 µm long, weakly curved. Gonocoxite 65 µm long, with 2 long setae apically. Gonostylus 33 µm long; megaseta 8 µm long. HR 2.0, HV 4.4. Wing damaged. Hypopygium of holotype redrawn ( Figs 19 A–B).

Distribution. Japan.

Figures

FIGURE 19. Corynoneura tokarapequea Sasa et Suzuki, 1995, male. A. Hypopygium, dorsal view. B. Hypopygium, ventral view.