Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


TaxonomyBrowseInfoImagesLinksBooksData
"Bumble Bees and Cuckoo Bumble Bees of California"
By Robbin W. Thorp, Donald S. Horning, Jr., Lorry L. Dunning
University of California Press, Berkeley, 1983
ISBN: 0-520-09645-2
Cite: 242789
A useful reference monograph covering California bumblebees by a well-respected authority on the subject. Begins with general information on life history and ecology, followed by technical keys, and discussions of the California subgenera and species of Bombus and Psithyrus (parasitic "Cuckoo Bumble Bees"). A PDF file of the 79 page monograph is available for free here.