| evidence for bombus occidentalis (hymenoptera: apidae) populations in the olympic peninsula, the palouse prairie, and forests of northern idaho. | since the mid-1990s, bombus occidentalis (green) has declined from being one of the most common to one of the rarest bumble bee species in the pacific northwest of the united states. although its conservation status is unresolved, a petition to list this species as endangered or threatened was recently submitted to the u.s. fish and wildlife service. to shed light on the conservation situation and inform the u.s. fish and wildlife service decision, we report on the detection and abundance of b. ... | 2016 | 26856817 |