The family Therevidae is little known and it resembles many other other Brachycera, both in morphology and ethology. The taxonomic history of the Therevidae accordingly has undergone repeated revisions; in the past, many therevids were assigned to other families, and many other Brachycera were assigned to the Therevidae. Since the 1970s however, there has been a great deal of rationalisation of the taxonomy, particularly by Lyneborg and Irwin. Revision of the higher taxa, based on the phylogenetic cladistic relationships between various groups of Asiloidea has led to a better understanding of their ranks and interrelationships.