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TaxonomyBrowse
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Genus Spathidexia

Thelaira americana - Spathidexia dunningii - female Thelaira americana - Spathidexia dunningii - female Thelaira americana - Spathidexia dunningii - female Fly - Spathidexia dunningii - male Fly - Spathidexia dunningii Fly - Spathidexia dunningii
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Tachinidae (Parasitic Flies)
Subfamily Dexiinae
Tribe Voriini
Genus Spathidexia
Synonyms and other taxonomic changes
Spathidexia Townsend, 1912
Gymnopalpus Townsend, 1919 is treated as a subgenus
Minthodexiopsis Townsend, 1927
Identification
Eyes nearly as tall as head, apparently bare in North American species, antennae near middle of head, which is short front to back and nearly semicircular in profile. No discal bristles on abdomen. Scutellum with three large pairs of bristles, the apical bristles crossed. Arista with short hairs, but apparently bare in all but the closest photographs. Females of most species have a projecting ovipositor.
Range
Widespread in New World
Food
The only host record is from a skipper. Similar genera are also parasites of Lepidoptera.
Remarks
"The name Spathidexia is derived from the Latin term 'spatha', in reference to the females' blade-like ovipositor. Males and females within this genus are sometimes strongly dimorphic with only the females possessing proclinate orbital bristles, or distinctive abdominal coloration and pattern." (Fleming et al. 2015)
Print References
Arnaud, P. H. 1960. A review of the genus Spathidexia Townsend (Diptera: Tachinidae). Wasmann Journal of Biology 18: 1–36.