About Megasoma occidentale Bolivar, Pieltain, Jiménez-Asúa & Martinez, 1963
Megasoma occidentale is a species of scarab beetle. This species is endemic to Mexico, and has been recorded from the Mexican states of Oaxaca and Sinaloa. Adult Megasoma occidentale are attracted to light. The larvae of this species have been collected from rotten coconut palm stems.