Ochetosoma elongatum and the hosts (IMAGE) Toho University Caption A. The Japanese striped snake E. quadrivirgata infected with O. elongatum (dark arrows). B. The freshwater snail Physella acuta. C. Ochetosoma elongatum. Credit Dr. Tsukasa Waki Usage Restrictions None License Original 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.