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Megasoma Elephas

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Megasoma elephas (the elephant beetle) is found to be distinct sexual dimorphic; the males possess a long central rhinoceros-like horn and short lateral horns, whereas the female species lack of horns (Blackaller 1990). The male M. elephas use their horns as their fighting weapon to combat against other males in two cases: to win over a female or to defend the food site. This is evident through the study done by Emlen, Szafran, Corley, and Dworkin (2006) as they demonstrated that the elephant beetle horns have evolved to accommodate these species; their fighting technique. However, the researchers proposed the idea that has led many naturalists including Darwin to re-consider the significance of horns in male’s mating success. This idea was

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