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For Insects, Spiders & Their Kin
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Species Bombus vagans - Half-black Bumble Bee

Bombus? - Bombus vagans Bombus vagans - male Bumblebee - Bombus vagans Bombus vagans or flavifrons? - Bombus vagans Bombus vagans or flavifrons? - Bombus vagans Bombus vagans or flavifrons3? - Bombus vagans Bumble Bee - Bombus vagans Bumble bee on clover - Bombus vagans
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 Apidae (Cuckoo, Carpenter, Digger, Bumble, and Honey Bees)
Subfamily Apinae (Honey, Bumble, Long-horned, Orchid, and Digger Bees)
Tribe Bombini (Bumble Bees)
Genus Bombus (Bumble Bees)
No Taxon (Subgenus Pyrobombus)
Species vagans (Half-black Bumble Bee)
Synonyms and other taxonomic changes
Bombus bolsteri
Bombus consimilis
Bremus vagans var coctus
Bremus vagans varhelenae
Explanation of Names
Author of species is Smith, 1854.
The anterior portion of bee (top of the head, thorax, and first two segments of the abdomen) is yellow, and the posterior half is black. Long malar space as in bimaculatus but clearly longer than in sandersoni or perplexus. Black hairs present in middle of scutum (unlike most perplexus). Male flagellum parallel-sided and segment 3 much longer than F1 and about twice as long as F 2 (vs. F1-F3 expanded medially and constricted at segmental boundaries and F3 similar in length to F1 and only about 1.5 times length of F2 in sandersoni).
Ontario to Nova Scotia, south to Georgia.
June to August.
The Hosts section of its Discover Life species page lists known associations based on specimen records and images.
Internet References
common name reference; PDF doc (Committee on Common Names of Insects, Entomological Society of America)