THE INDRIS OF ANJANAHARIBE-SUD, NORTHEASTERN MADAGASCAR

During a short field trip to the Special Reserve of Anjanaharibe-Sud i n northeastern Madagascar, data concerning pelage coloration, behavior (especially vocalization), and ecology of indris were collected. Anja naharibe-Sud is the northernmost locality of indri distribution. In co mparison to the better-known indris from the southern part of their di stribution, the indris in this region show different pelage coloration . Several types of loud vocalizations are analyzed, based on a small s ample of tape recordings. Their song structure is more complicated tha n previously reported, containing distinct sequences of duetting. Data on behavior and ecology were collected by interviewing guides and loc al inhabitants. Some information contrasts with reports on the more so uthern indri populations. The conservation status of indris in Anjanah aribe-Sud and the future of the reserve are outlined.