Species List
- Bombus affinis Cresson
- Bombus auricomus (Robertson)
- Bombus bimaculatus Cresson
- Bombus borealis Kirby
- Bombus fervidus (Fabricius)
- Bombus griseocollis (DeGeer)
- Bombus impatiens Cresson
- Bombus pennsylvanicus (DeGeer)
- Bombus perplexus Cresson
- Bombus rufocinctus Cresson
- Bombus sandersoni Franklin
- Bombus ternarius Say
- Bombus terricola Kirby
- Bombus vagans Smith
- Psithyrus ashtoni (Cresson)
- Psithyrus citrinus (Smith)
- Psithyrus fernaldae Franklin
- Psithyrus insularis (Smith)
- Psithyrus variabilis Cresson
Possible additions
Due to changes in climate and human activities, the following species may be found in Michigan:
Bombus fraternus Smith