What is the world's largest type of beetle by length?

The world's largest beetle by length is the Hercules beetle (Dynastes hercules), a species of rhinoceros beetle native to Central and South America. Males can grow up to 17 centimeters (6.5 inches) in length, including their long horns. Females, however, are smaller, usually around 10 centimeters (4 inches) in length.

The Hercules beetle is a charismatic insect with distinctive physical features, including large horns on the head and a black or dark brown exoskeleton with white or cream-colored markings. It is a herbivorous insect and is known to feed on a variety of fruits and sap. While they may look intimidating, Hercules beetles are generally harmless to humans.

Despite its impressive size, the Hercules beetle is not the heaviest beetle in the world, as other species such as the Goliath beetle can weigh more. However, it remains one of the largest and most fascinating insects in the world.