British Insects: Bombus and Psithyrus (Bumblebees and Cuckoo-bees)
Unless indicated otherwise, the following attributes are implicit throughout the descriptions, except where the characters concerned are inapplicable.
Biology. The adult populations including specialised, sterile females constituting workers.
Adult morphology. The hair coats of abdomen and thorax conspicuously colour-patterned; not all black anterior to a contrasting abdominal tail. Thorax not predominantly ginger-haired.
Abdomen not ginger haired. The white tail without yellow side patches. Sternite 6 of females without a reflexed spiny process at the tip; without ventro-lateral keels.
To view illustrations with legends giving names in current use, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa, as well as source references and other relevant material.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: Bumblebees and Cuckoobees. Version: 1st January 2012. http://delta-intkey.com’.