There are several species of Curculio, of which a few are very similar in color and pattern. This one looks most like C. venosus. It was found at a light near Oak trees with acorns (the one in the picture), many of which have the typical holes made by the adult female to lay her eggs (see last picture). The eggs hatch inside the acorn and develop into almost mature larvae. They emerge from the fallen acorns into the ground where they may spend another year or more before pupating into adults.
Semi-rural residential area, San Cristobal de Las Casas, Chiapas, Mexico 2,200 meters.