Parapsilocephala-Acraspisa-Bonjeania
Parapsilocephala (2 spp.), Acraspisa (undescribed species), and Bonjeania (4 spp.) are small to medium, usually blackish, therevids that share the following: antennae shorter than head length, and placed low on the frons; frons with a shiny callus above the antennae; head relatively wide: and cell m3 closed. Parapsilocephala and Acraspisa are typically small (~6mm), proboscis small, wings often banded, and males with eyes closely approximated or touching (in Acraspisa always touching for a short distance above). Acraspisa have hind femora discernibly longer than the two pairs in front, but in Parapsilocephala all pairs are approximately equal in length. Bonjeania are typically medium sized, both sexes are dichoptic, the wings never strongly banded, and have prominent proboscis directed upwards towards the antennae.
