Siphona, Meigen, 1803

Tachi, Takuji & Shima, Hiroshi, 2023, Systematic study of the subgenus Aphantorhaphopsis of the genus Siphona in East Asia and the Oriental Region (Diptera: Tachinidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 63 (1), pp. 213-247 : 214

Key to the subgenera of Siphona in the Palaearctic and Oriental Regions

1 Palpus clavate apically and 1.0–1.5 times as long as postpedicel. ............................................................... 2

– Palpus cylindrical (not apically clavate) and short; male postabdomen with pregonite usually bearing 1 strong seta on dorsal part; distiphallus with developed posterolateral margin ( TACHI & SHIMA 2005: Figs 5–6 ). ................ Ceranthia Robineau-Desvoidy, 1830

2 Labella elongate, as long as or longer than prementum; male postabdomen with pregonite lacking seta on dorsal part. .................................. Siphona Meigen, 1803

– Labella pad-like in most species, if labella rather elongate then male pregonite usually with 1 seta on dorsal part. ................. Aphantorhaphopsis Townsend, 1926

Figures

Figs 5–8. Male postabdomen of Siphona (Aphantorhaphopsis) perispoliata (Mesnil, 1953) (Hong Kong, Taipokau). 5 – epandrium, cerci and surstylus in lateral view; 6 – epandrium, cerci and surstylus in dorsal view (setae omitted on left side); 7 – hypandrium, pregonite, postgonite and phallus in lateral view; 8 – fifth abdominal sternite in ventral view (setae omitted on left side). Scale bars = 0.1 mm.