Which rainforest beetle is famous for reaching about 16 centimetres in length?

The titan beetle is a rainforest longhorn beetle that can reach about 16 centimetres in length.

Titanus giganteus is found in the Amazon rainforest, especially in Brazil, French Guiana, and surrounding areas. Its large brown body, powerful mandibles, and long antennae make it one of the most impressive insects in the forest.

The species is famous for its size, but its complete life cycle remains difficult to observe because larvae develop inside dead or decaying wood. Adults are rarely encountered, which has contributed to their legendary reputation among entomologists and collectors.

The titan beetle is sometimes called the world's largest beetle, although rankings depend on whether scientists compare total length, body mass, or body volume. Hercules beetles can exceed it in some length measurements because of their horns, so the wording matters.