Desmometopa flavicornis
This species is distinguished from its congeners by the following combination of characters: First flagellomere in male yellowish medially and at extreme base, dark only around base of arista; forefemur in both sexes almost entirely yellow, with anterodorsal brown stripe distally; mid- and hindfemora yellow; posteroventral brush on hindtarsus yellow.
Male. Predominantly black; forecoxa, forefemur except anterodorsal brown stripe distally, mid- and hindfemora, mid- and hindtibiae, and mid- and hindtarsi except distal tarsomeres yellow. Palpus yellow with light brown to brown tip. Posteroventral brush on hindtarsus yellow.
Head: Anterior frontal seta half as long as posterior frontal seta. Postorbital region about 1/6x as long as eye.
Wing: Length: 2.1-2.5 mm.
Abdomen: Tergites 1-5 microtrichose and subshiny medially, polished laterally. Abdominal reservoirs present.
Female. Differs from male in entirely black first flagellomere. Palpus black except mesobasally. (Brake & Freidberg 2003)