Metatrichia

Winterton, Shaun L. & Woodley, Norman E., 2009, New species of Metatrichia Coquillett (Diptera: Scenopinidae) from Australia and Venezuela, Zootaxa 2094, pp. 42-51 : 50

Key to extant species of Metatrichia from the New World

1. Legs tan-brown; abdomen generally tan coloured with posterior margins of tergites 1–7 cream-coloured; abdomen without scale-like setae; notopleural region of pleura cream; knob of haltere cream; wings of female hyaline............ .............................................................................................................................................. M. venezuelensis sp. nov.

- Legs very dark brown to black; abdomen black, sometimes with reddish-yellow colour laterally; abdomen with scale-like setae laterally; notopleural region of pleura black; knob of haltere whitish yellow to brown; wings of female with brownish infuscation ................................................................................................................................ 2

2. Body uniformly black, sometimes end of abdomen vaguely brownish in females; knob of haltere primarily brown; widespread in United States to northern Mexico............................................................... M. bulbosa (Osten Sacken)

- Body largely black, but male abdomen (female unknown) with lateral margins of tergites 3–6 and entire tergite 7 reddish yellow; knob of haltere whitish yellow; known with certainty only from Paraguay......... M. robusta Kröber