González, Jorge M., and Marco A. Gaiani. “New Species of <i>Eufriesea</i≫ (Hymenoptera: Apidae) from Venezuela”. Revista de Biología Tropical 37, no. 2 (November 1, 1989): 149–152. Accessed November 30, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/23567.