They are the most diverse insect species.

Beetles, belonging to the order Coleoptera, are incredibly diverse insects that comprise a quarter of all known living organisms! There are an estimated 400,000 identified species of beetles, with so many species yet to be discovered1. Among them, there are size variations that would make your jaw drop.

On one end of the scale, we have the almost invisible feather-winged beetles, no larger than 0.01 inches. The Fringed Ant Beetle (Nymphister Kronaueri) is the smallest known beetle and measures around 0.25 millimeters in length. On the other end, the Goliath Beetle, which can grow to 6.7 inches and weigh 1.8 ounces, is one of the longest and heaviest insects in the world.

Furthermore, beetles live in almost every habitat except the extreme polar regions. They live in the driest deserts and the wettest tropical rainforests!