


- Family: Apidae
- Approximate # species in our region: 19
- Common name: bumble bees
Few other bees are as well-known and as beloved as bumble bees. These hairy, rotund bees are represented by nearly 60 species in the US, about 20 of which can be found in our region. Bumble bees form annual, social colonies which begins each spring with a queen and grows throughout the summer with help from workers. Bumble bees are one of the best groups for a gentle introduction to bee watching since most species are large, have distinctive patterning on their abdomens, and have longer flight seasons than most solitary bees.
It is worth noting that several other species of insects resemble bumble bees. Among bees in the northeast, Anthophora, Habropoda laboriosa, Ptilothrix bombiformis, and Xylocopa virginica are particularly effective bumble bee mimics. One way to distinguish between bumble bees and their lookalikes is that bumble bee females gather pollen in moistened pellets on their hind legs (corbiculae), whereas the mimics always carry pollen dry in brushes of hairs (scopae). With a bit of practice, you will also learn that bumble bees and mimics making buzzing noises at different frequencies when in flight.
In addition to this website, there are several other excellent guides to bumble bee identification – we’ve listed a few particularly good ones on our additional resources page.
Regional Species List:
| Scientific Name | Subgenus | Common Name | Phenology | Forage/Hosts |
|---|---|---|---|---|
| Bombus affinis | [Bombus] | Rusty-patched bumble bee | Apr-Sep | Generalist |
| Bombus ashtoni | [Psithyrus] | Ashton’s cuckoo-bumble bee | May-Aug | Social parasite: Bombus terricola, B. affinis |
| Bombus auricomus | [Bombias] | Black-and-gold bumble bee | May-Aug | Generalist (long-tongued) |
| Bombus bimaculatus | [Pyrobombus] | Two-spotted bumble bee | Apr-Aug | Generalist |
| Bombus borealis | [Subterraneobombus] | Northern amber bumble bee | May-Sep | Generalist (long-tongued) |
| Bombus citrinus | [Psithyrus] | Lemon cuckoo-bumble bee | May-Sep | Social parasite: Bombus impatiens; B. vagans |
| Bombus fervidus | [Thoracobombus] | Golden northern bumble bee | May-Sep | Generalist (long-tongued) |
| Bombus flavidus | [Psithyrus] | Yellowish cuckoo-bumble bee | May-Aug | Social parasite: Bombus rufocinctus, B. perplexus |
| Bombus fraternus | [Cullumanobombus] | Southern plains bumble bee | May-Aug | Generalist |
| Bombus griseocollis | [Cullumanobombus] | Brown-belted bumble bee | May-Aug | Generalist |
| Bombus impatiens | [Pyrobombus] | Common eastern bumble bee | Apr-Nov | Generalist |
| Bombus insularis | [Psithyrus] | Indiscriminate cuckoo-bumble bee | May-Aug | Social parasite: Bombus ternarius, B. terricola, B. fervidus |
| Bombus pensylvanicus | [Thoracobombus] | American bumble bee | May-Oct | Generalist (long-tongued) |
| Bombus perplexus | [Pyrobombus] | Perplexing bumble bee | Apr-Aug | Generalist |
| Bombus rufocinctus | [Cullumanobombus] | Red-belted bumble bee | May-Sep | Generalist |
| Bombus vagans | [Pyrobombus] | Sanderson’s bumble bee | Apr-Aug | Generalist |
| Bombus ternarius | [Pyrobombus] | Tricolored bumble bee | Apr-Oct | Generalist |
| Bombus terricola | [Bombus] | Yellow-banded bumble bee | May-Aug | Generalist |
| Bombus vagans | [Pyrobombus] | Half-black bumble bee | May-Sep | Generalist |