Verreaux's Sifaka (IMAGE) University of Groningen Caption The critically endangered Verreaux’s Sifaka (Propithecus verreauxi) is one of the 109 species of lemurs that currently are extant on Madagascar. A total of 17 species of lemurs have already gone extinct. Credit Chien C. Lee Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.