Siamese Rhinoceros Beetle (Xylotrupes gideon)
Last Observed: December 2015, Koh Chang
Observed By: Perry Stevens, Teerasak Thomas Suamcheepmasau, Dave Hinchliffe, Supotch White, Sam Kettel
The splendid Siamese Rhinoceros Beetle is clearly named for its horn. Only the male of the species has the horn and it used during mating season to see off its rivals when finding a mate.
These beetles are also known as fighting beetles since in Thailand, especially the north of the country, they are fought against one another as a popular betting sport. In contrast to many bloodsports the victor is the beetle that lifts his opponent off his feet.