Bees of the Pacific Northwest : Guide to the identification resources for bees (Hymenoptera : Anthophila)

<jats:p>This guide provides a review of the published identification resources, primarily dichotomous keys, which support the determination of subgenera, species-groups, and species of bees in the Pacific Northwest region. The region of application for this resource includes northern California, Oregon, Washington, British Columbia, and western Idaho.</jats:p>