Rusty-patched bumble bee

Bombus affinis

Photo by Christy Stewart

Bumble bee illustrations: Paul Williams (identification and color patterns) and Elaine Evans (bee body design).
Identifying Features
Status: Rare, Endangered in Canada
  • Queen: hair short and even. Hair on head entirely black; emerges early.
  • Worker: rusty patch on T2, almost always completely surrounded by yellow hairs.

Range for this species
Base map: Wikimedia Commons
Floral Associations
  • Common Milkweed
  • New Jersey Tea
  • Purple Prairie Clover
  • Orange Jewelweed
  • New England Aster
Look Alike Species
  • B. griseocollis
  • B. bimaculatus

When to Look