Conservation Assessment of the Recently Described John Cleese's Woolly Lemur, Avahi cleesei (Lemuriformes, Indridae)

Abstract John Cleese's woolly lemur (Avahi cleesei) was discovered in 1990 and officially defined and named in 2005. This nocturnal lemur is known to occur only in the Tsingy de Bemaraha Strict Nature Reserve, a UNESCO World Heritage Site in central western Madagascar. In this article we summarize available relevant information on morphology, distribution, habitat, and behavior including vocalizations to assess the conservation status and facilitate future investigations, surveys in particular. According to the IUCN Red List categories, A. cleesei is clearly in the category Endangered. Further studies might show, however, that the species should be classified as Critically Endangered, because of its very limited distribution and particularly specialized biological requirements.