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Genus Chalcosyrphus

Underbark fly expupates - Chalcosyrphus libo BG1446 C8271 - Chalcosyrphus piger Fly, I believe - Chalcosyrphus chalybeus Unknown larva 1 - Chalcosyrphus nemorum Chalcosyrphus piger Syrphid - Chalcosyrphus piger unknown syrphid - Chalcosyrphus nemorum Red and Black Wood Eating Syphrid - Chalcosyrphus libo
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Eristalinae
Tribe Milesiini
Subtribe Xylotina
Genus Chalcosyrphus
Explanation of Names
Chalcosyrphus Curran 1925
'coppery Syrphus'
22 spp. in 3 subgenera in our area(1), >50 spp. in 11 subgenera worldwide
Small syrphids with enlarged, somewhat spiny, hind femora. Several members of genus have brightly-patterned abdomens: yellow and black, or red. Likely wasp mimics(2).
holarctic & oriental
in NC, Apr-Jun, some spp. into Nov(3)
Larvae feed in decaying wood, perhaps decaying sap(4)
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. Canadian Journal of Arthropod Identification 23: 1-351.
2.Kaufman Field Guide to Insects of North America
Eric Eaton, Kenn Kaufman. 2006. Houghton Mifflin.
3.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
4.Insects: Their Natural History And Diversity: With a Photographic Guide to Insects of Eastern North America
Stephen A. Marshall. 2006. Firefly Books Ltd.
5.Syrphidae of Ontario