Female (IMAGE) Frontiers Caption Adult female. Xyleborus affinis does not have distinctive female castes, and all females are in principle capable of reproduction. Credit Peter H. Biederman Usage Restrictions Credit artist 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.