Acrocerinae

Acrocerinae is a subfamily of Acroceridae. They are small distinctive flies whose larvae are endoparasites of spiders. Adults hunchback-flies visit flowers to feed on nectar. 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.
Systematics.
The subfamily includes two extant genera and one extinct:
The extinct fly genus †"Burmacyrtus" was originally placed in this subfamily as well, but according to Gillung & Winterton (2017) it is not considered an acrocerid.