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Species Bombus appositus - White-shouldered Bumble Bee

Bombus with baldish dorsal - Bombus appositus Bumblebee - Bombus appositus Mountain Bumble Bee - Bombus appositus Striped Bee - Bombus appositus Mountain Bumble Bee - Bombus appositus Long-horned bee (Eucerini)? - Bombus appositus Long-horned bee (Eucerini)? - Bombus appositus Bombus appositus? - Bombus appositus - male
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, Longhorn, Orchid, and Digger Bees)
Tribe Bombini (Bumble Bees)
Genus Bombus (Bumble Bees)
No Taxon (Subgenus Subterraneobombus)
Species appositus (White-shouldered Bumble Bee)
Other Common Names
Another proposed common name, Mountain Bumble Bee, is not optimal as it better applies to other species such as Bombus monticola of the Old World.
Synonyms and other taxonomic changes
Bombus appositus Cresson, 1878
Similar to Bombus borealis but in appositus the anterior of the scutum is usually noticeably paler than the posterio of the scutum. Unlike fervidus the facial hairs are extensively yellow. Beware of worn centralis in which T3-T4 can appear yellowish rather than red.
Western mountains, typically at higher elevations, at least in the southern part of its range.

Disjunct records from southern Arizona mapped as unverified data in the Williams et al. guide were long ago established to be definitely erroneous by R. W. Thorp.
Includes mountain meadows and slopes
The Hosts section of its Discover Life species page lists known floral associations based on specimen records and images.
Internet References