Archodontes

Archodontes melanopus is a root-boring species of beetle in the family Cerambycidae, the only species in the genus Archodontes. It is endemic to Central America and the south-eastern United States, and bores the roots of oaks and other hardwoods.
Description.
Head short and black. Mandibles short. Antennae dark brown, almost black; shorter than the insect. The thorax broad, rough and black, margined on the posterior and anterior edges; having many small sharp spines on its sides, the two last of which are larger than the rest, and having two tubercles on the upper side. Elytra dark brown, almost black, margined on the sides and suture, with a small spine on each, at the extremities, and extending a little beyond the anus. Abdomen smooth and shining, and of a dark brown colour, nearly black. Sides of the breast hairy. Legs dark brown, almost black, smooth and shining, with three small tibial spurs. Length (including mandibles) 2¼ inches (57 mm).