What Bug Is That? The guide to Australian insect families.

Logo: What Bug Is That? Logo: Taxonomy Research & Information Network



Pseudopomyza collessi McAlpine lives in cool, damp forests in eastern Australia. Larvae of Palaearctic pseudopomyzids are recorded from rotting logs, but New Zealand species are sometimes associated with fowl-yards (Harrison 1976; I. Andrew pers. comm.).


The two Australian species are small to minute flies with the following diagnostic features:

Antenna almost horizontal, with first flagellomere not drooping; postocellar bristles convergent; vibrissa present; all orbital bristles reclinate; face at least partly desclerotised on lower median part; tibiae without dorsal bristles; four pairs of dorsocentral bristles present; vein C with both subcostal and humeral breaks; cells bm and dm confluent, cell cup very small, but vein A1+CuA2 sclerotised.


This very small family has a sparse and possibly relict world distribution. New Zealand has more species than Australia, and there is a Baltic amber fossil (early Tertiary). These flies have sometimes been included in the Cypselosomatidae, but may be more closely related to the Neriidae.