ChalcosomaChalcosoma is a genus of Southeast Asian rhinoceros beetles. They are known as three horned rhinoceros beetles for their trident like horn. They are endemic to Southeast Asia.EtymologyThe name Chalcosoma can be translated as being formed from the Ancient Greek χαλκός, meaning "copper", and σῶμα, meaning "body".SpeciesChalcosoma argregs Takeuchi, 2014Chalcosoma atlas Chalcosoma chiron Chalcosoma engganense Nagai, 2004Chalcosoma moellenkampi Kolbe, 1900