Synonyms and other taxonomic changes
includes Psithyrus, which is now considered a subgenus of Bombus - see links below
Numbers
42 species in the western Nearctic
24 species in the eastern Nearctic
17 species in the southern Nearctic
Nearctica lists 41 species plus 6 listed as Psithyrus
Remarks
The following species used to belong to the genus Psithyrus, now considered a subgenus:
B. ashtoni Cresson 1864
B. citrinus Smith 1854
B. fernaldae Franklin 1911
B. insularis Smith 1861
B. suckleyi Greene 1860
B. variabilis Cresson 1872
See Also
bee-mimicking robber flies such as
Laphria, Mallophora
Print References
Michener, Charles D. 2007. (2nd ed.) The Bees of the World. 1,016 pp. Johns Hopkins University Press. [advertised
here]
Internet References
Bombus Bumblebees of the World - British Museum of Natural History
The following range maps and species lists are all from the British Museum of Natural History website (the 2-letter abbreviations indicate subgenus):
common name references; PDF doc for 20 species of
Bombus (Committee on Common Names of Insects, Entomological Society of America)
discussion on subgenus Psithyrus plus list and distribution of world species (Natural History Museum, UK)
world bee genera plus synonyms and subgenera; list based on Michener, 2000 (Doug Yanega, U. of California at Riverside)
Xerces.org Basic information and some illustrations for identification.
University of California, Berkeley. Bumble bees and cuckoo bumble bees of California.