Menke, Arnold S., and Fernando Fernández. 1996. “Illustrated Keys for Neotropical Sphecids (Apoídea:Sphecidae) Subfamilies, Tribes, and Genera”. Revista De Biología Tropical 44 (S2):1–68. https://www.revistas.ucr.ac.cr/index.php/rbt/article/view/56430.