Thinophilus Wahlberg, 1844

Grootaert, Patrick, 2018, Revision of the genus Thinophilus Wahlberg (Diptera: Dolichopodidae) from Singapore and adjacent regions: A long term study with a prudent reconciliation of a genetic to a classic morphological approach, Raffles Bulletin of Zoology 66, pp. 413-473 : 416

Genus Thinophilus Wahlberg, 1844

Thinophilus Wahlberg, 1844: 37 . Type species: Rhaphium flavipalpe Zetterstedt, 1843 (monotypy).

Parathinophilus Parent, 1932a: 161 . Type species: Parathinophilus expolitus Parent, 1932a (monotypy).

Diagnosis. Hydrophorinae . Small to large flies (2–6 mm), body generally metallic green to purplish in ground-colour but covered by a greyish or brownish dusting. Head wider than high. Frons and face broad. One pair of vertical bristles moved forward on the frons at the level of the ocellar mound. Antenna yellow to dark brown. First and second antennal segment together shorter than third segment. Second antennal segment dorsally enveloping the third segment and with a lateral external projection over the third segment which is more or less rounded with a dorsal to apico-dorsal arista. Palpus large covering a strong proboscis. Only short bristles on palpus, a distinct apical bristle lacking. Acrostichals absent; 4, 5 strong dorsocentrals if more dorsocentrals then short. Wing elongate. Phallus generally long, coiled.