Bombus - Field Guide

Bombus biology
Glossary
Key to genera
Literature Cited
Sexing Bombus

Field Guide

The Bombus known from Evergreen

Thorax Head Abdomen
californicus
Pile of scutum in front of tegulae yellow; thoracic pleura black. Face with black pile. Gastral tergum four yellow.
flavifrons
Pile of scutum and scutellum yellow and black mixed; pleura yellow. Pile of face yellow with black. Gastral terga 1 and 2 yellow, at least laterally; terga 3 black, sometimes yellow basally; terga 4, 5, 6 mostly black.
melanopygus
Scutum mixture of yellow and black pile infront of tegulae; scutellum yellow; pleura yellow and black mixed. Face with mixed yellow and black pile. Gastral terga 1 yellow laterally, 2 and 3 orange, and 4 through 6 with black pile.
mixtus
Pile of scutum yellow with black; scutellum yellow mixed with black; pleura yellow. Pile of Face yellow mixed with black. Gastral terga 1 and 2 yellow, at least laterally; terga 3 black; terga 4 orange medially, black laterally; terga 5 and 6 brownish white.
occidentalis
Scutum in front of tegulae yellow; thoracic pleura black. Pile of face mixture of yellow and black. Gastral terga 5 and 6 white.
sitkensis
Pile of scutum and scutellum yellow mixed with black; pleura yellow. Pile of face yellow with black. Gastral terga 1 and 2 yellow, at least laterally; terga 3 black; terga 4 yellow basally; terga 5 and 6 yellow.
vosnesenskii
pile of scutum in front of tegulae yellow. Thoracic pleura black. Face with yellow pile. Gastral tergum four yellow.

Bombus probably occurring at Evergreen

Illustrations from Heinrich (1979).

appositus
bifarius
caliginosus
nevadensis
rufocinctus

Last updated Monday, July 24, 2006, by Lisa Ferrier