Beetles represent the largest Order of insects, containing over 250,000 described species. Beetle groups include tiger beetles, ground beetles, water beetles, whirligig beetles, fungus beetles, rove beetles, stag beetles, scarab beetles, wood-boring beetles, click beetles, fireflies, dermestids, ladybird beetles, darkling beetles, longhorn beetles, blister beetles, leaf beetles, weevils and many others.
Click beetles get their name for their ability to right themselves if they find themselves stuck on their back. A spine on the underside of the thorax fits into a groove on the underside of the abdomen. If the insect finds itself upside-down, it arches its body and with a loud click, snaps itself straight, launching into the air. They are masters of thanotosis or feigning death, often tucking their antenna and legs close to their bodies and remaining still for a long time. This Elaterid is from Ecuador. Other tropical species of the genus Pyrophorus, possess bright bioluminescent regions.