Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Genus Thecophora

Conopidae - Thecophora Fly - Thecophora bee on daisy - Thecophora Fly - Thecophora unidentified Diptera - Thecophora unidentified Diptera - Thecophora Orange-winged Fly - Thecophora Thecophora
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Superfamily Sciomyzoidea
Family Conopidae (Thick-headed Flies)
Subfamily Myopinae
Genus Thecophora
Synonyms and other taxonomic changes
Occemyia Robineau-Desvoidy, 1853
Explanation of Names
Author: Rondani 1845
Nearctica lists 8 species
Small, mostly blackish, head wider than thorax, tip of abdomen curves downward, eyes red. Cheeks usually less than half the vertical eye length (Myopa usually has cheeks greater than half the eye length). Proboscis long, bent sharply forward at base and sharply backward near middle. Antennae long (Zodion has short antennae).
Usually found on flowers in open grassy areas of forests.
Adults visit composite flowers. Larvae are endoparasites of other insects.
Thecophora are parasitic on Halictus and Lasioglossum bees.
See Also
Myopa species are usually brown to reddish.
Print References
Camras, S. (1945). A study of the genus Occemyia in North America (Diptera: Conopidae). Ann. Ent. Soc. Am. 38: 216-222. (Full Text)
Proceedings of the Entomological Society of Ontario, 1966, Vol. 97, pp. 103 to 104 - parasitization
Journal of the Kansas Entomological Society, 1966, Vol. 39, #1, pp. 123 to 131 - parasitization
Internet References