ALVAREZ-R., J.-ALONSO, and GUILLERMO SÁNCHEZ-G. “VARIATION IN THE NUMBER OF INSTARS OF Spodoptera Frugiperda (J. E. Smith)”. Revista Colombiana de Entomología 9, no. 1-2-3-4 (December 31, 1983): 43–49. Accessed May 7, 2024. https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/10298.