Lesser noctule (Nyctalus leisleri) (IMAGE) De Gruyter Caption Nyctalus leisleri, a mid-sized bat, commonly known as the Lesser noctule Credit Copyright: Dina Rnjak, Geonatura Ltd. Usage Restrictions Photo credit must be supplied 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.