Oak Groundling, Telphusa sedulitella

The Oak Groundling, Telphusa sedulitella, is the most common caterpillar we find on oak trees in spring in the lower foothills. They feed on the fresh newly emerged oak leaves, then drop down on silken lines to pupate. They will emerge as adults in late May through July. More photos at http://mothphotographersgroup.msstate.edu/species.php?hodges=1859