Orr, Michael C., Zachary M. Portman, and Terry L. Griswold. 2015. “Megachile (Megachile) Montivaga (Hymenoptera: Megachilidae) Nesting in Live Thistle (Asteraceae: Cirsium)”. Journal of Melittology, no. 48 (March): 1-6. https://doi.org/10.17161/jom.v0i48.4847.