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For Insects, Spiders & Their Kin
For the United States & Canada
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Fall Fund Drive


Genus Cochliomyia - Screwworm Flies

Secondary Screwworm, perhaps? - Cochliomyia macellaria Blue fly - Cochliomyia macellaria Cochliomyia macellaria ? - Cochliomyia macellaria Cochliomyia macellaria - female Cochliomyia macellaria? - Cochliomyia macellaria Cochliomyia? - Cochliomyia macellaria blue fly - Cochliomyia macellaria secondary screwworm fly - Cochliomyia macellaria - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Calliphoridae (Blow Flies)
Subfamily Chrysomyinae
Genus Cochliomyia (Screwworm Flies)
Explanation of Names
Cochliomyia Townsend 1915
'snail fly'
4 spp., all in our area(1)(2)
genae (cheeks) orange, see comments:
in our area, throughout US to so. Canada; 2 spp. are Neotropical and only reach so. FL, one has been eradicated (formerly widespread in so. US north to SC-IN-IA-c.CA), so C. macellaria is the only species one may expect to encounter(1)
two spp. cause myiasis and considered pests: C. hominivorax (Primary Screwworm, extirpated) and C. macellaria (Secondary Screwworm, widespread)(3)