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

Family Halictidae - Sweat Bees

Agapostemon virescens - aggression (?) leaving the nest - a series - Agapostemon virescens - female Insect for ID - Halictus rubicundus Bee - Lasioglossum tegulare - female Cuckoo Wasp - Augochlora pura - female Bee or Wasp? - Lasioglossum Small Black Bee - Lasioglossum - male Metallic Green Bee Red abdomen with white bands - Dieunomia - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Bees, Ants, and other Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Halictidae (Sweat Bees)
Numbers
Arnett lists 502 species (1). Most of them in the genus Lasioglossum
Nearctica lists 21 genera.
Size
4-10 mm
Life Cycle
Typically ground-nesters, with nests formed in clay soil, sandy banks of streams, etc. Most species are polylectic (collecting pollen from a variety of unrelated plants).
Remarks
A few species are attracted to sweat, and will sometimes sting if disturbed, though the sting is not very painful (1).
Some species are parasitic, especially the genus Sphecodes (2)
See Also
Some metallic-green halictids superficially resemble cuckoo wasps (Chrysididae), but halictids lack the sculptured cuticle and the ability to curl up in a protective ball.
Print References
Arnett, family #66 of the hymenoptera, pp. 602-603 (1)