A.  Castaneda-Vildozola, Valdez-Carrasco, J., Equihua-Martinez, A., Gonzalez-Hernandez, H., Romero-Napoles, J., Solis-Aguilar, J. F., and Ramirez-Alarcon, S., ?Genitalia of three species of Heilipus Germar (Coleoptera: Curculionidae) that damage avocado fruits (Persea americana Mill.) in Mexico and Costa Rica?, Neotropical Entomology, vol. 36, pp. 914-918, 2007.