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Species Bombus auricomus - Black and Gold Bumble Bee

Bombus - Bombus auricomus Bombus - Bombus auricomus Which bombus, please-us? - Bombus auricomus Which bombus, please-us? - Bombus auricomus American bumble bee? - Bombus auricomus - female Is this my bimaculatus queen? - Bombus auricomus - female Is this my bimaculatus queen? - Bombus auricomus - female bumblebee - Bombus auricomus
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 Apidae (Cuckoo, Carpenter, Digger, Bumble, and Honey Bees)
Subfamily Apinae (Honey, Bumble, and Digger Bees)
Tribe Bombini (Bumble Bees)
Genus Bombus (Bumble Bees)
No Taxon (Subgenus Bombias)
Species auricomus (Black and Gold Bumble Bee)
Synonyms and other taxonomic changes
Bombus nevadensis is treated as conspecific with B. auricomus by some sources, and as a separate species by other sources; most recent sources treat them separately - see link to taxonomic discussion in Internet References section below
Explanation of Names
auricomus means "with golden hair"
Size
queen: body length 20-25 mm
male: 17-20 mm
worker: 18-20 mm
Identification
Muellerian mimic of the American Bumble Bee

Note the following:

- ocelli low on face
- yellow hairs on vertex
- yellow hairs on scutellum (thin yellow posterior thoracic band)
- with more yellow on scutellum and more black on T1 than pensylvanicus

See detailed descriptions at discoverlife.org
Internet References
taxonomic status discussion of auricomus and nevadensis (Paul Williams, Natural History Museum, UK)
color diagrams of nevadensis and auricomus (Natural History Museum, UK)
common name reference; PDF doc (Committee on Common Names of Insects, Entomological Society of America)