Mystrium 'Reproductive Castes' (IMAGE) Pensoft Publishers Caption Different patterns of 'reproductive castes' can be seen in a single genus Mystrium. Credit Dr. Masashi Yoshimura 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.