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For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Discussion of 2018 gathering

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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Pterodontia

Odd fly - Pterodontia flavipes Pterodontia from northern Sierra Nevada - Pterodontia flavipes - male Acroceridae - Pterodontia ? - Pterodontia westwoodi - female small-headed fly - Pterodontia westwoodi - male Small Headed Fly - Pterodontia misella - female Curated Specimen from the CAS - Pterodontia notomaculata - male Curated Specimen from the CAS - Pterodontia johnsoni - male Pterodontia misella? - Pterodontia misella - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Acroceridae (Small-headed Flies)
Genus Pterodontia
Explanation of Names
Pterodontia Gray 1832
6 spp. in our area(1):
flavipes Gray transcontinental (OR-CA to NB-MD)
johnsoni Cole w US (WA-CA-ID)
misella Osten Sacken w NA (BC-CA to MT-UT)
notomaculata Sabrosky w US (OR-ID-CA)
vix Townsend CA
westwoodi Sabrosky east coast (MA-GA)
Eyes pilose; antennae are attached below the middle of the head, and are small, short, and inconspicuous; mouthparts small and nearly imperceptible; males have a tooth-like projection along the costal edge of the wing (females lack this "tooth"); tibiae have (small) apical spurs.
Print References
Works Cited
1.A Catalog of the Diptera of America North of Mexico
Alan Stone, et al. 1965. United States Department of Agriculture.
2.A new species and notes on Acroceridae (Diptera)
Sabrosky C.W. 1943. Ent. News 55: 176-182.
3.A further contribution to the classification of the North American spider parasites of the family Acroceratidae (Diptera)
Sabrosky C.W. 1948. Am. Midl. Nat. 39: 382-430.