Corynoneura seiryuresea Sasa, Suzuki et Sakai

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 : 32

Corynoneura seiryuresea Sasa, Suzuki et Sakai

( Figs 17 A–C)

Corynoneura seiryuresea Sasa, Suzuki et Sakai, 1998: 123 .

Material examined: JAPAN: Shikoku, Kochi Prefecture, Ekawasaki, Nishitosa-Mura, sweep net, male holotype (No. 358: 81), 26.iv.1998, H. Suzuki.

Diagnostic characters. The species can be separated from other East Asian Corynoneura by having antenna 8 flagellomeres, AR 0.47; phallapodeme short, almost straight; sternapodeme inverted U-shaped; and gonostylus apically curved.

Additional description and corrections. The holotype possesses 8 flagellomeres, AR 0.47 and leg ratio of the mid leg of 0.44; while the original description Sasa et al. (1998) mentions antenna with only 7 flagellomeres, AR 0.69 and mid leg ratio of 0.51. The following characters should be added: Tentorium 100 µm long, 15 µm wide. Sternapodeme inverted U-shaped; coxapodeme 25 µm long; attachment point with phallapodeme placed in caudal position of sternapodeme and caudally directed; phallapodeme short, straight and broad, 20 µm long. Gonocoxite 63 µm long with 2 long setae apically. Gonostylus 20 µm long; megaseta 8 µm long. HR 3.1, HV 5.75. The wing and hypopygium of the holotype are redrawn ( Figs 17 A–C).

Distribution. Japan.

Figures

FIGURE 17. Corynoneura seiryuresea Sasa, Suzuki et Sakai, 1998, male. A. Wing. B. Hypopygium, dorsal view. C. Hypopygium, ventral view.