Asymphyloptera Collin, 1933

Ramos-Pastrana, Yardany, Córdoba-Suarez, Eric & Sinclair, Bradley J., 2023, Two new species of Asymphyloptera Collin (Diptera: Empididae: Clinocerinae) from Colombia, with an updated key to males of New World species, Zootaxa 5374 (3), pp. 437-444 : 438

Asymphyloptera Collin

Asymphyloptera Collin, 1933: 323 .

Type species: A. discrepans Collin, 1933 , by original designation.

Diagnosis. [adapted from Sinclair (2015)]. Very small size (wing length <2.5 mm); face broad with distinct clypeus; postpedicel globular with long, slender apical extension; mouthparts narrow with palpus elongate and narrowly pointed, appressed to proboscis; unusual wing venation, where R 2+3 is branched and the upper crossvein of cell dm (= base of M 2) is absent; cercus with anterior and posterior lobes (rarely anterior lobe absent); epandrium narrow, with elongated setae apically; surstylus with acute apex (rarely flattened or rounded); phallus straight or arched, mainly membranous apically.

Distribution. In Australasia, this genus is known from Australia, New Caledonia, New Zealand and Philip Island (Norfolk) ( Sinclair 1995). In the New World, this genus is recorded from Chile, Colombia (new record), Costa Rica, Dominica, Ecuador, Mexico, Peru, Venezuela, and USA (Arizona). The genus is also known from Puerto Rico ( Cumming & Sinclair 2009), but the specimens have not been re-located ( Sinclair 2015).