Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Subfamily Eristalinae

Is this Copestylum caudatum? - Copestylum marginatum - female Syrphid - Psilota Bee fly?  Villa? - Copestylum satur Cheilosia? - Cheilosia - female Tropidia albistylum - male Copestylum marginatum (group) - Copestylum vittatum - male Tropidia albistylum - male Yellow-spotted Bromeliad Fly - Copestylum marginatum - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Hover Flies)
Subfamily Eristalinae
Numbers
~500 spp. in 73 genera in our area(1)
Identification
Humeri pilose
Habitat
Larvae in moist, sometimes shallow aquatic environments
This subfamily has the widest range of larval habitats. Most Eristalinae larvae are saprophagous. They live in sap trails, under bark, in rot-holes in trees and in decaying organic material such as dung and compost. Some live as scavengers on the remains of insects and other material. Others are leaf miners, tunnel in stems and root. Some are specialize on wax-secreting aphids. Some are parasitoids in wasp or bees nests.
Food
Larvae of most feed on decaying organic debris. They are filter feeders in different kinds of aquatic media. They purify water by filtering microorganisms and other products. Some feed on bulbs and are considered garden pests.
Life Cycle
Some immature stages
Print References
Maier, C.T. (1982) Larval habitats and mate-seeking sites of flower flies (Diptera: Syrphidae, Eristalinae). Proceedings of the Entomological Society of Washington, 84, 603–609. (Full Text)
Internet References
Works Cited
1.Key to the genera of nearctic Syrphidae
Miranda G.F.G, Young A.D., Locke M.M., Marshall S.A., Skevington J.H., Thompson F.C. 2013. CJAI 23: 1‒351.