The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• Brown, M. J. F. (2011). The trouble with bumblebees. Nature. 469, 169-170.
• Bumble bees: rusty-patched bumble bee (Bombus affinis) (Xerces Society)
• Cameron, S. A., Hines H. M., & Williams P. H. (2007). A comprehensive phylogeny of the bumblebees (Bombus). Biological Journal of the Linnean Society. 91, 161-188.
• Cameron, S. A., Lozier J. D., Strange J. P., Koch J. B., Cordes N., Solter L. F., et al. (2011). Patterns of widespread decline in North American bumble bees. Proceedings of the National Academy of Sciences (U.S.A.). 108, 662-667.
• Colla, S. R. (2010). COSEWIC Assessment and Status Report on the Rusty-patched Bumble Bee Bombus affinis in Canada. Ottawa, Canada: Committee on the Status of Endangered Wildlife in Canada (COSEWIC).
• Colla, S. R., & Packer L. (2008). Evidence for decline in eastern North American bumblebees (Hymenoptera: Apidae), with special focus on Bombus affinis Cresson. Biodiversity and Conservation. 17, 1379-1391.
• Colla, S. R., Otterstatter M. C., Gegear R. J., & Thomson J. D. (2006). Plight of the bumblebee: Pathogen spillover from commercial to wild populations. Biological Conservation. 129, 461-467.
• Evans, E., Thorp R., Jepsen S., & Black S. H. (2008). Status Review of Three Formerly Common Species of Bumble Bee in the Subgenus Bombus: Bombus affinis (the rusty patched bumble bee), B. terricola (the yellowbanded bumble bee), and B. occidentalis (the western bumble bee). Portland, Oregon (U.S.A.): The Xerces Society.
• Fisher, R. M. (1983). Inability of the Social Parasite Psithyrus ashtoni to Suppress Ovarian Development in Workers of Bombus affinis (Hymenoptera: Apidae). Journal of the Kansas Entomological Society. 56, 69-73.
• Fisher, R. M. (1983). Recognition of Host Nest Odour by the Bumblebee Social Parasite Psithyrus ashtoni (Hymenoptera: Apidae). Journal of the New York Entomological Society. 91, 503-507.
• Fisher, R. M. (1987). Queen-worker conflict and social parasitism in bumble bees (Hymenoptera: Apidae) . Animal Behaviour. 35, 1026-1036.
• Fisher, R. M. (1992). SEX-RATIOS IN BUMBLE BEE SOCIAL PARASITES - SUPPORT FOR QUEEN-WORKER CONFLICT THEORY - (HYMENOPTERA, APIDAE). Sociobiology. 20, 205-217.
• Fisher, R. M., & Sampson B. J. (1992). MORPHOLOGICAL SPECIALIZATIONS OF THE BUMBLE BEE SOCIAL PARASITE PSITHYRUS-ASHTONI (CRESSON) (HYMENOPTERA, APIDAE) . Canadian Entomologist. 124, 69-77.
• Gillespie, S. (2010). Factors affecting parasite prevalence among wild bumblebees. Ecological Entomology. 35, 737-747.
• Goulson, D., Lye G. C., & Darvill B. (2008). Decline and conservation of bumble bees . Annual Review of Entomology. 53, 191-208.
• Grixti, J. C., Wong L. T., Cameron S. A., & Favret C. (2009). Decline of bumble bees (Bombus) in the North American Midwest. Biological Conservation. 142, 75-84.
• Hilty, J. Editor. 2010. Insect Visitors of Illinois Wildflowers. World Wide Web electronic publication. flowervisitors.info, version (09/2010).
  See: Abbreviations for Insect Activities, Abbreviations for Scientific Observers, References for behavioral observations
• Krombein, Karl V., Paul D. Hurd, Jr., David R. Smith, and B. D. Burks. 1979. Catalog of Hymenoptera in America North of Mexico, vol. 2: Apocrita (Aculeata). xvi + 1199-2209
• Lectotype: 1863. Proceedings of the Entomological Society of America. 2: 103.
• Macfarlane, R. P. (1974). Ecology of Bombinae (Hymenoptera: Apidae) of Southern Ontario, with emphasis on their natural enemies and relationships with flowers. Ph.D., Guelph, Canada: University of Guelph.
• Macfarlane, R. P., Lipa J. J., & Liu H. J. (1995). Bumble bee pathogens and internal enemies. Bee World. 76, 130-148.
• Martin, S. J., Carruthers J. M., Williams P. H., & Drijfhout F. P. (2010). Host Specific Social Parasites (Psithyrus) Indicate Chemical Recognition System in Bumblebees. Journal of Chemical Ecology. 36, 855-863.
• Otterstatter, M. C., & Thomson J. D. (2008). Does Pathogen Spillover from Commercially Reared Bumble Bees Threaten Wild Pollinators?. PLoS ONE. 3(7),
• Plath, O. E. (1934). Bumblebees and their ways. New York: Macmillan.
• Pocket Guide to Identifying the Rusty Patched Bumble Bee Bombus affinis (Xerces Society)
• Schiestl, F. P., & Barrows E. M. (1999). Queen and forager size of Bombus affinis Cresson (Hymenoptera: Apidae). Proceedings of the Entomological Society of Washington. 101, 880-886.
• Sladen, F. W. L. (1912). The humble-bee, its life history and how to domesticate it.
• Thorp, R. W., & Shepherd M. D. (2005). Profile: subgenus Bombus. (ShepherdM D., VaughanD M., BlackS H., Ed.).Red List of Pollinator Insects of North America. Portland, Oregon (U.S.A.): The Xerces Society for Invertebrate Conservation.
• Williams, P. H. 1998. An annotated checklist of bumble bees with an analysis of patterns of description (Hymenoptera: Apidae, Bombini). Bulletin of the Natural History Museum (Entomology), vol. 67, no. 1. 79-152
• Williams, P. H., & Osborne J. L. (2009). Bumblebee vulnerability and conservation world-wide. Apidologie. 40, 367-387.
• Williams, P., Colla S., & Xie Z. (2009). Bumblebee Vulnerability: Common Correlates of Winners and Losers across Three Continents. Conservation Biology. 23, 931-940.
• Winfree, R. (2010). The conservation and restoration of wild bees. Annals of the New York Academy of Sciences. 1195, 169-197.
• Zayed, A., & Packer L. (2005). Complementary sex y determination substantially increases extinction proneness of haplodiploid populations. Proceedings of the National Academy of Sciences (U.S.A.). 102, 10742-10746.