The Mydidae, or Mydas flies, are a cosmopolitan family of flies. It is a small family, with about 471 species described. They are generally large in size, including the largest known fly, Gauromydas heros. Many of the species, in addition to their large size, are mimics of stinging hymenopterans, especially wasps.
Acrocerinae is a subfamily of small-headed flies in the family Acroceridae. Their larvae are endoparasites of araneomorph spiders, with the exception of Carvalhoa appendiculata which can develop as ectoparasitoids on their host spiders. Traditionally, the subfamily included the genera now placed in Cyrtinae and Ogcodinae, but the subfamily in this sense was found to be polyphyletic and was split up in 2019.
Philopotinae is a subfamily of small-headed flies. They have an arched body shape, as well as enlarged postpronotal lobes that form a collar behind the head. Their larvae are endoparasites of araneomorph spiders in the subgroup Entelegynae.
Panopinae is a subfamily of small-headed flies (Acroceridae). Their larvae are endoparasites of spiders in the infraorder Mygalomorphae.
Coquena is a genus of small-headed fly found in Argentina and Chile. It was first established by Evert I. Schlinger in 2013.
Acrocera is a genus of small-headed flies in the family Acroceridae.
Ogcodes is a cosmopolitan genus of small-headed flies in the family Acroceridae. About 90 species have been described for the genus. It is the most common and speciose genus in its family. These flies are endoparasitoids of ground-dwelling entelegyne spiders.
Eulonchus is a genus of small-headed flies in the family Acroceridae. There are six described species in Eulonchus. The genus is found in North America. Adults have a metallic blue, green or sometimes purple coloration, giving them a jewel-like appearance. A common name for flies in the genus is the North American jewelled spider flies. Adults are also known as "sapphires" or "emeralds".
Pterodontia is a genus of small-headed flies. There are at least 20 described species in Pterodontia.
Turbopsebius is a genus of small-headed flies in the family Acroceridae. There are about four described species in Turbopsebius.
Ocnaea is a genus of small-headed flies. There are 20 described species in Ocnaea.
Eulonchus sapphirinus is a species of small-headed flies in the family Acroceridae.
Eulonchus tristis is a species of small-headed flies in the family Acroceridae.
Carvalhoa is a genus of small-headed flies in the family Acroceridae. The genus is endemic to Chile. It was originally known as Sphaerops, named by Rodolfo Amando Philippi in 1865. This name was found to be preoccupied by the reptile genus Sphaerops Gray, 1845, so it was renamed to Carvalhoa by Ahmet Ömer Koçak and Muhabbet Kemal in 2013. The genus is named after the Brazilian dipterist Claudio José Barros de Carvalho.
Eulonchus marginatus is a species of small-headed flies in the family Acroceridae. It has a Nearctic distribution and visits flowers from over ten different families.
Panops is a genus of small-headed flies. It is endemic to Australia and the Papua region of Indonesia. Males and females measure 8.0–12.5 mm and 9.5–14.5 mm, respectively. Their larvae are thought to be endoparasites of spiders in the infraorder Mygalomorphae, a trait shared by most other members of the subfamily Panopinae.
Apsona is a genus of small-headed flies. It contains only one species, Apsona muscaria, which is endemic to New Zealand. It is very similar to the North American species Eulonchus smaragdinus.
Sabroskya is a genus of small-headed flies in the family Acroceridae. It is known from South Africa and Malawi. It is named after the American entomologist Curtis Williams Sabrosky.
Arrhynchus is a genus of small-headed flies in the family Acroceridae. It was formerly considered a synonym of Ocnaea, but was reinstated as a valid genus by Schlinger in 1968. It is endemic to Chile.
Cyrtinae is a subfamily of the Acroceridae. Their larvae are endoparasites of araneomorph spiders in the subgroup Entelegynae.
