Xenochalepus rufithoraxXenochalepus rufithorax is a species of beetle of the family Chrysomelidae. It is found in Costa Rica, El Salvador, Mexico and Nicaragua.DescriptionIt is very similar to Xenochalepus erythroderus, but the clypeus is rather larger, less distinctly pentangular, and the oblique apical foveae are much smaller and narrower, the sides of the thorax are slightly distinctly trisinuate. The elytra are entirely black, and their apical teeth are rather finer.BiologyThe food plant is unknown.