Male Subimago Mayfly (IMAGE) Pensoft Publishers Caption Potamanthus luteus (male subimago) at home in undisturbed larger rivers. Credit Walter Reisinger Usage Restrictions CC-BY 4.0 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.