Common Names: Herpetogramma genus, webworms, fern balls
This is a catch all for unidentified moths in the Herpetogramma genus, of the Crambidae family. Found in pastures, fields, and lawns. While most of the Herpetogramma genus larvae feed on grasses, at least 3 species feed on ferns. They will roll-up the tip of the fern into a ball shape for a cocoon.