The Hercules beetle is a giant rhinoceros beetle of Central and South American rainforests. Its enormous horns and strength have made it one of the most famous insects in the world.
Interesting facts
- Males use their pincer-like horns to lift and throw rivals in fights over females.
- It is often said to be able to lift many times its own weight.
- Its wing cases change colour with humidity, from olive-yellow in dry air to black in humid air.
- Females have no horns.
- Its larvae live in rotting logs for up to two years.
- It is named after the Greek hero Heracles (Hercules).
Behaviour
Adults are mostly nocturnal and feed on fallen fruit. Males battle rivals by gripping them between their horns.
Breeding and young
Females lay eggs in rotting wood, where the larvae grow for up to two years before pupating.
Threats and conservation
Deforestation and collection for the insect trade.
Where to see it
- Rainforests of Costa Rica and Ecuador
- Guadeloupe and Dominica, Caribbean
- Butterfly and insect houses at zoos
- Natural history museums
Status source: IUCN Red List. Profile last reviewed September 2026.
