Silveira, Fernando A. “A Synopsis of Actenosigynes Moure, Graf &Amp; Urban, 1999 (Hymenoptera: Colletidae)—new Species, Possible Oligolecty and Biogeographic Comments”. Zootaxa 2292, no. 1 (November 18, 2009): 15–24. Accessed April 20, 2025. https://mapress.com/zt/article/view/zootaxa.2292.1.2.