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Contact information
For information on Wisconsin's rare animals, contact:
Rich Staffen
Conservation Biologist

American Bumble Bee (Bombus pensylvanicus)

Need a main photo for this animal



American Bumble Bee (Bombus pensylvanicus), a Wisconsin State Special Concern bee is a ground-nesting species that occurs in prairies, open fields, and farmland. Historically it was only found in the southern half of the state. Wisconsin has a few current records from Dane, Grant, LaCrosse, and Waupaca Counties. Nectar plants include Cirsium (thistles), Cornus (bunchberry), Dalea (prairie clover), Echinacea (purple coneflowers), Eupatorium (Joe-pye weed), Helianthus (sunflowers), Hypericum (St. Johnís wort), Liatris, Silphium, Solanum, Solidago (goldenrods), and Trifolium (clovers). Nests have been found mostly ground surface among long grasses, but occasionally underground. In Wisconsin, the majority of observations have been reported between May and September.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for American Bumble Bee (Bombus pensylvanicus). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.

Documented locations of Bombus pensylvanicus in the Natural Heritage Inventory Database as of July 2015.
Summary Information
State StatusSC/N
Federal Status in Wisconsinnone
State RankS1
Global RankG3G4
Tracked by NHIY

Species guidance

A guidance document is not available at this time. Use the information from the other tabs and contact local biologists, as needed, to develop management and avoidance strategies.


No additional photos are available for American Bumble Bee at this time. Please consider donating a photo to the Natural Heritage Conservation program.

Last revised: Wednesday, November 07, 2018