Horn-dimorphism
Guides
Oryctini
rhinoceros beetles
Oryctini is a tribe of large, robust scarab beetles within the subfamily Dynastinae, commonly referred to as "rhinoceros beetles." Members range from 25–60 mm in length and are typically dark brown to black. The tribe includes approximately 25 genera distributed worldwide, with particular diversity in the Neotropical region. Several species are economically significant pests, notably in the genus Oryctes, which damages palms and sugarcane. Males frequently possess pronounced horns or armored projections on the head and pronotum, with horn development influenced by larval nutrition.