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Species Mydas ventralis

AZ Fly - Mydas ventralis Mydas Fly pair mating - Mydas ventralis Robber Fly? - Mydas ventralis Mydas - Mydas ventralis Colorado River Mydid - Mydas ventralis Is this a wasp? - Mydas ventralis Arizona large fly? - Mydas ventralis - male Diptera; Mydas; Mydas ventralis? - Mydas ventralis - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Mydidae (Mydas Flies)
Subfamily Mydinae
Genus Mydas
Species ventralis (Mydas ventralis)
Synonyms and other taxonomic changes
Midas ventralis GerstaŐącker, 1868
Midas rufiventris Loew, 1866
Midas cleptes Osten Sacken, 1886
Midas chrysites Osten Sacken, 1886
Mydas abdominalis Adams, 1904
It seems this mydid species is a good mimic of the scoliid wasp Triscolia ardens. Apparently it even "fools itself", in that Alcock(1989) mentions the males perched on shrubs waiting for passing females to chase often take off and chase passing individuals of Triscolia ardens!

Another scoliid worth mentioning is Scolia dubia haematodes, which has nearly identical coloration to Triscolia ardens.
Print References
Alcock, John. (1989). The mating system of Mydas ventralis (Diptera: Mydidae). Psyche Vol. 96:167-176. (Full Text)