Sabertooth Longhorn Beetle, which can measure up to 17.5 cm long (6.9 inches).
The sabertooth longhorn beetle is one of the largest beetles in the world, found in the rainforets of South America. Most of its life is spent in larval form, which can last up to ten years, while adults only live for a few months. The female will lay her eggs under the bark of dead or dying softwood trees. When the larvae hatch they burrow into the tree where they live.
Macrodontia cervicornis (Linnaeus, 1758), also known as the sabertooth longhorn beetle, is one of the largest beetles, if one allows for the enormous mandibles of the males, from which it derives both of the names in its binomen: Macrodontia means "long tooth", and cervicornis means "deer antler". Measurements of insect length normally exclude legs, jaws, or horns, but if jaws are included, the longest known specimen of M. cervicornis is 17.7 cm; the longest known specimen of Dynastes hercules, a beetle species with enormous horns, is 17.5 cm,[2][3] and the longest known beetle excluding either jaws or horns is Titanus giganteus, at 16.7 cm.[4]