Chapin, Edward A. “NEW SPECIES OF SCARABAEIDAE (COLEOPTERA) FROM PUERTO RICO AND THE VIRGIN ISLANDS”. The Journal of Agriculture of the University of Puerto Rico 19, no. 2 (April 1, 1935): 67–72. Accessed May 3, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/14285.