Totally PA_White-Fronted Langur (Presbytis frontata)Totally PA_White-Fronted Langur (Presbytis frontata)

PictureWhite-Fronted Langur (Presbytis frontata)


Monkeys in Borneo are represented by two distinct groups: the langurs or leaf monkeys and the Proboscis Monkey (subfamily Colobinae) and the macaques (subfamily Cercopithecinae). The colobines are mainly arboreal, have a long tail, lack cheek pouches and have a large, sacculated stomach which permits breakdown of leafy material into digestible substances and helps detoxify poisonous leaves. The macaques are partly terrestrial, with a short or long tail, cheek pouches for temporary storage of food and a simple stomach capable of breaking down only a limited amount of leafy material.

HB 470-540, T 630-740, HF 165-180 (3 Sarawak and Kalimantan specimens).

Mainly grey-brown, with a distinct bare white spot on the forehead. P.f. frontata: brownish, with darker arms, legs, top and sides of head and tail; chin and lower cheeks greyish. The white spot on the forehead is roughly triangular in shape . P.f. nudifrons: dark greyish, with blackish hands, feet and base of tail; underparts and distal ends of tail paler grey-brown; throat white. The white spot on the forehead is rather square and divided by a vertical line of short black hairs.

Ecology and Habitat:
Diurnal. Ecology unknown but probably similar to the Maroon and Hose's Langurs, P. rubicunda and P. hosei. Occurs in tall lowland and hill dipterocarp forests.

Restricted to Borneo south of about 3o North. P.f. nudifrons: recorded from central Sarawak between the upper S. Rajang and upper Batang Lupar, including Lanjak-Entimau Wildlife Sanctuary.