Chalcosoma chiron
Chalcosoma chiron is a species of beetle in the family Scarabaeidae. This species can be found from Malaysia south into Indonesia and Thailand in East region. It was formerly known as Chalcosoma caucasus, a name which is a junior synonym and not valid.
Description
Chalcosoma chiron males can reach a length of, while females grow to. Caucasus beetles are the largest of the genus Chalcosoma and one of Asia's largest beetles. They have a striking sexual dimorphism. The male has specialised enormous, curved horns on its head and thorax that it can use to fight with other males to gain mating rights with females. A female is significantly smaller. The elytra of the females have a velvety texture, as they are covered by tiny hairs. Caucasus beetles differ from Atlas beetles in that they have a small tooth on their lower horns.Their grubs go through three molts, and generally live underground for 12–15 months; the larger males remain grubs longer than females. Their pupae live 1–2 months, while the adults live for 3–5 months. Females live longer than males.