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Subgenus Halictus sensu lato

black and white bee - Halictus rubicundus - male Bee ID Request - Halictus rubicundus - male Lasioglossum? - Halictus ligatus - female bee - Halictus rubicundus - male Unidentified bee #1 - Halictus Megachile bee?  - Halictus poeyi Colletidae? - Halictus ligatus - male Bee? - Halictus poeyi - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Halictidae (Sweat Bees)
Subfamily Halictinae
Tribe Halictini
Genus Halictus (Furrow Bees)
No Taxon Subgenus Halictus sensu lato
Other Common Names
Halictus sensu stricto (i.e. excluding Seladonia)
Synonyms and other taxonomic changes
Pesenko (1984) subdivided the black (i.e. non-metallic) Halictus into many smaller subgenera, accepted as valid by Michener (2000, 2004). For visual identification it is practical to recognize a more inclusive subgenus Halictus sensu lato including the non-metallic species.
Size
usually larger than Seladonia (the metallic Halictus)
Identification
Halictus lacking metallic greenish reflections
Range
Widespread across the Holarctic
Season
early spring-autumn
Life Cycle
Many species are eusocial, but some species are socially polymorphic depending on environment (species such as H. rubicundus tending to be more social at warmer sites and solitary at cold sites such as high in mountains)