Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
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

Calendar
BugGuide Gathering
Pack Forest
Washington State
July 10-12, 2009
Details...

Photos from the 2009 gathering
 
Photos from the 2008 gathering in Tennessee
 
Photos from the 2007 gathering in Minnesota

TaxonomyBrowse
Info
ImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Bees, Ants, and other Stinging Wasps » Anthophila (Apoidea) - Bees » Cuckoo, Carpenter, Digger, Bumble, and Honey Bees (Apidae) » Honey, Bumble, and Digger Bees (Apinae) » Bumble Bees (Bombini) » Bumble Bees (Bombus) » Subgenus Psithyrus (Bombus Subgenus Psithyrus)

Subgenus Psithyrus

Classification · Numbers · Identification · Habitat · Life Cycle · Remarks
Bombus Bumblebee ?? - Bombus insularis - female Bombus unknown - Bombus citrinus Bombus? - Bombus fernaldae - male Bombus suckleyi - Bombus suckleyi - female Bombus sp. 4 - Bombus insularis - female Bombus sp. 4 - Bombus insularis - female Confusing Bumble Bee - Bombus fernaldae Bumblebee on Joe-pye weed - Bombus citrinus - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Bees, Ants, and other Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Apidae (Cuckoo, Carpenter, Digger, Bumble, and Honey Bees)
Subfamily Apinae (Honey, Bumble, and Digger Bees)
Tribe Bombini (Bumble Bees)
Genus Bombus (Bumble Bees)
No Taxon Subgenus Psithyrus
Numbers
Six species according to Nearctica.
30 species listed at Natural History Museum in the Palearctic and Nearctic.
Identification
Females differ from those of all other Bombus in having the outer surface of the hind tibia convex and hairy (flat or concave and largely bare in Bombus).

Males are easily distinguished by their smaller size.
Habitat
Parasites of other Bombus
Life Cycle
There is no worker caste, the females invade the nests of Bombus and lay their eggs there to be reared by the hosts.
Remarks
Originally it was considered a separate genus from Bombus.
Contributed by Beatriz Moisset on 18 November, 2008 - 3:49pm
Additional contributions by Ted Kropiewnicki
Last updated 17 March, 2009 - 4:59pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2009 Iowa State University, unless otherwise noted.

Bugguide is hosted by Iowa State University Entomology.

Printer Friendly Version 		Terms of Use
Privacy Policy
Site Map
Contact