Thienemanniella tonewquerea Sasa et Tanaka

Fu, Yue, Saether, Ole & Wang, Xinhua, 2010, Thienemanniella Kieffer from East Asia, with a systematic review of the genus (Diptera: Chironomidae: Orthocladiinae), Zootaxa 2431, pp. 1-42 : 23

Thienemanniella tonewquerea Sasa et Tanaka

( Figs 16 A–B)

Thienemanniella tonewquerea Sasa et Tanaka, 2002: 43 .

Material examined. JAPAN: Gunma Prefecture, Tone River, Taisho Bridge, sweeping, holotype male, 12.xii.2000, (No. 405: 085).

Diagnostic characters. The species differs from other East Asian members of the genus by antenna with 12 flagellomeres, AR 0.71. Palpomere 5/ 3: 2.1. Superior volsella angle-like in apical part, and joined together with inferior volsella.

Emended description. Eyes pubescent; antenna with 12 flagellomeres, AR 0. 71. Anal point absent. Tergite IX rounded posteriorly. Other characters are consistent with the original descriptions but some additional characters may be added: Palpomeres length (in µm): -?; 28; 75; 95; 160, palpomeres 2 ellipsoid, 3 and 4 rectangular, 5 long and slender, palpomere 5/ 3: 2.1. Gonocoxite 160 µm long, with 1 long seta. Gonostylus 50 µm long. Superior volsella and inferior volsella well developed. Transverse sternapodeme narrow, 62 µm long and with oral projection; phallapodeme slightly curved. HR 3.2, HV 5.2.

Distribution. Japan.

Figures

FIGURES 16. Thienemanniella tonewquerea, male. A. Hypopygium, dorsal view; B. Hypopygium, ventral view.