Sanford's brown lemur

Description:

Sanford's brown lemur is a medium-sized lemur with a head-to-body length of 38–40 cm, a tail length of 50–55 cm, an overall length of 88–95 cm, and a body weight of 1.8-1.9 kg (about 3-5 lbs).[1] This species is sexually dichromatic. Males have a gray to brown dorsal coat which darkens as it reaches the hands, feet and base of the tail. Ventral coat is pale gray to brownish-gray and the tail is dark gray. The nose, muzzle and face are black, with the surrounding area solid white or light gray. Features that distinguish this species from the white-fronted brown lemur are the more prominent ear and cheek tufts. In this species the hair around the ears and on the lower cheek is noticeably longer and has a 'spiked' appearance, while the white-fronted lemur males have a very rounded look to their tufts. The tufts on the Sanford's lemur may be white to cream to rufous, though it is suspected that the darker or rufous variations may be results of hybridization between this species and the crowned lemur which is within the same home range. Male Sanford's brown lemurs also have a light brown 'cap' at the top of the head which the male white-fronted lemur lacks. Female Sanford's brown lemurs have a gray-brown dorsal coat which darkens to gray around the shoulders and upper area of the back to the top of the head. The ventral coat is a paler gray, and the face is a similar gray color with variable light patches above the eyes. Tail is often darker than the dorsal coat and can range in color from gray-brown to dark gray. From a distance, female Sanford's brown lemurs can be almost indistinguishable from female white-fronted brown lemurs, but at a close range there are a few subtle difference. There is a slight difference in coat color and variation but notable differences are in the face. White-fronted females will have a small light spot at the corner of their mouths, while female Sanford's lack the lip patches and have variable light areas around the eyes. Sanford's brown lemur females also tend to have longer, bushier hair on their cheeks than do white-fronted females. (wiki)

Habitat:

This species is found in the very northernmost tip of the island, ranging from Antsiranana to Ampanakana. Their populations are concentrated in a few forests - Ankarana, Analamerana and Montagne d'Ambre, with a small disjunct population in the Daraina region. The Manambato river is the southern limit of its range, although hybrids of the Sanford's brown lemur and white-fronted brown lemur appear to occur between Vohemar and Sambava. This species occurs in tropical moist, dry lowland and montane forests up to elevations of 1,400 m. In Ankarana it appears to favor secondary forest and is active at both day and night. Sanford's brown lemur is said to display a cathemeral activity pattern, becoming most active in the afternoon and evening with occasional bouts at night. Sanford's brown lemur is reported to associate with the crowned lemur during the wet season, a time of greater food availability. This friendly behavior would explain the occasional reports of hybrids between the two species. (Wiki)