Ramos, Magno S., and Celso O. Azevedo. “Revision of Eupsenella Westwood, 1874 (Hymenoptera, Bethylidae)”. Zootaxa 3539, no. 1 (November 5, 2012): 1–80. Accessed April 20, 2025. https://mapress.com/zt/article/view/zootaxa.3539.1.1.