Western bumble bee (Bombus occidentalis)

Western bumble bee (Bombus occidentalis) photo

Photo credit: Rich Hatfield

Bumble bee illustrations: Paul Williams (identification and color patterns) and Elaine Evans (bee body design).

Identifying Features

Status: In decline, particularly in the western portion of its range
Western bumble bee (Bombus occidentalis) illustration Western bumble bee (Bombus occidentalis) illustration 2 Western bumble bee (Bombus occidentalis) illustration 3
"Several color forms"; "T1 black"; "Usually with white on T5"

Range

Western bumble bee (Bombus occidentalis) range map

When to Look

Western bumble bee (Bombus occidentalis) range phenology

Floral Associations

Erythronium grandiflorum, Hedysarum alpinum, Ipomopsis aggregata, Pedicularis capitata, Symphoricarpos

Look Alike Species

B. crotchii, B. franklini, B. cryptarum