Duncan, Riley. “Specimen Records of Bombus (Alpinobombus) in the Oregon State Arthropod Collection As of December 2018”. Catalog: Oregon State Arthropod Collection 3, no. 1 (January 3, 2019). Accessed April 26, 2024. https://journals.oregondigital.org/CatalogOSAC/article/view/5521.