The largest beetle in the world is the Hercules beetle (Dynastes hercules), which can grow to over 6.5 inches (17 cm) in length. 

This impressive beetle is named after the mythological hero Hercules due to its incredible strength, capable of lifting objects 850 times its own weight.  Found primarily in the rainforests of Central and South America, the Hercules beetle is renowned for its long, curved horns that males use in combat to establish dominance and secure mates.  

The fascinating biology and striking appearance of the Hercules beetle make it a subject of interest for entomologists and nature enthusiasts alike.