Orr, M. C.; Portman, Z. M.; Griswold, T. L. Megachile (Megachile) Montivaga (Hymenoptera: Megachilidae) Nesting in Live Thistle (Asteraceae: Cirsium). J. Melittol. 2015, No. 48, 1-6. https://doi.org/10.17161/jom.v0i48.4847.