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Species Bombus californicus - California Bumble Bee

The Incredible Disappearing Bombus - Bombus californicus - male Bombus fervidus californicus - Bombus californicus - female California bumblebee - Bombus californicus - female Bombus sp.? - Bombus californicus bumble bee - Bombus californicus OC Hymenoptera #22 - Bombus californicus - male Bumble Bee - Bombus californicus Bombus californicus? - Bombus californicus
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 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 Thoracobombus)
Species californicus (California Bumble Bee)
Synonyms and other taxonomic changes
Species status for Bombus californicus is controversial as some authorities regard it as merely a subspecies or color variety of Bombus fervidus. Many Bombus californicus, especially from northern and eastern sites, are extensively yellow and therefore closely resemble Bombus fervidus, differing only in presence of black hairs on Terga 1-4. Lack of strong divergence in DNA barcodes and other molecular markers also indicate that this species pair is less distinct than other controversial species pairs.
Identification
Color pattern of typical Californian females as in vosnesenskii but with all black hairs on head instead of extensive yellow hairs. Also malar space long and legs gangly. In the eastern portion of its range its color converges on fervidus, and the most extensively yellow californicus specimens are very difficult to separate from typical fervidus (see comments on taxonomy above) but have at least some black hairs on the terga (these can be inconspicuous) which are lacking in fervidus.
Range
western North America
Habitat
In California often found in oak woodland savannah at relatively low elevation
Food
Often visits California poppies and Mariposa lilies (as do other bumble bees). The Hosts section of its Discover Life species page lists known floral associations based on specimen records and images.
Remarks
Internet References