PEÑA, J.E. and BELLOTTI, A.C. 1977. STUDIES ON THE FLIES OF THE STEM AND FRUIT OF YUCCA Anastrepha pickeli and Anastrepha manihoti. Revista Colombiana de Entomología. 3, 3-4 (Dec. 1977), 79–86. DOI:https://doi.org/10.25100/socolen.v3i3-4.10395.