Best, L. R.; Marshall, C. J.; Red-Laird, S. Confirmed Presence of the Squash Bee, Peponapis Pruinosa (Say, 1837) in the State of Oregon and Specimen-Based Observational Records of Peponapis (Say, 1837) (Hymenoptera: Anthophila) in the Oregon State Arthropod Collection. Cat. Or. State Arth. Coll. 2019, 3.