Titan Beetle

Titanus giganteus is the largest known beetle in the world by body length, with the largest verified specimens reaching 16.7 cm (excluding the antennae and legs); some unverified records suggest specimens up to 20 cm. The species belongs to family Cerambycidae (longhorn beetles) and inhabits the lowland Amazon rainforest of French Guiana, northern Brazil, eastern Peru, and southern Venezuela. Titanus is one of the most cryptic large insects in science: no titan beetle larva has ever been confidently collected in the wild. Based on indirect evidence (large boreholes in dead and decaying hardwood logs in titan habitat) and on the biology of related Cerambycidae, scientists hypothesize that the larva develops over many years inside large rotting trunks of specific Amazonian hardwoods. The adult is short-lived (a few weeks), does not feed (she has nonfunctional mouthparts beyond the defense mandibles), and exists primarily to find a mate. The mandibles are powerful: the species can audibly snap small twigs and reportedly cut through human skin and pencil-thick wood. Adults are encountered almost exclusively at blacklight traps in remote field stations — most of the world's specimens have come from a handful of stations in French Guiana over the last 50 years.