Worms (IMAGE) Pensoft Publishers Caption Tis picture shows speciments from the semi-aquatic earthworm genus Glyphidrilus, characterized by distinctive rounded anterior and square-shaped posterior as well as by the enlarged epidermal formation called “wings.” Credit Somsak Panha Usage Restrictions 3.0 CC-By License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.