Saguinus tripartitus (Milne-Edwards, 1878)

Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Callitrichiade, Handbook of the Mammals of the World – Volume 3 Primates, Barcelona: Lynx Edicions, pp. 262-346 : 324

26 .

Golden-mantled Saddle-back Tamarin

Saguinus tripartitus

French: Tamarin a manteau doré / German: Goldmanteltamarin / Spanish: Tamarin de dorso dorado Other common names: Golden-mantle Saddleback Tamarin, Golden-mantled Tamarin

Taxonomy. Midas tripartitus Milne-Edwards, 1878 ,

Rio Napo, Oriente, Ecuador .

Formerly considered a subspecies of S. fuscicollis . Molecular genetic analysis has indicated thatit forms a clade with neighboring S. lagonotus south of the rios Napo and Curaray. Monotypic.

Distribution. NE Ecuador and N Peru, between the rios Napo and Curaray in Peru, extending W into Ecuadorto the S of the rios Napo and Indillama, and N of the Curaray.

Descriptive notes. Head—body 22-26 cm, tail 32-34 cm; weight ¢.400 g. The mantle of the Golden-mantled Saddle-back Tamarin is golden-orange to creamy and sharply defined from the black fur on the head and the gray to golden marbled back. The head and facial skin are black. There are grayish-white hairs around the mouth and the sides of the nostrils, and a grayish or white chevron on the forehead between the eyes. Arms are orange colored, and thighs are grizzled orange, being mixed more with brown. Upper surfaces of hands and feet are orange and lined with black. The chest, belly, and inner parts of arms and legs have orange-colored fur. The tail is predominantly black but has a reddish-orange patch along the basal part by the rump. External genitalia are pigmented black.

Habitat. Primary and secondary lowland evergreen forests, lowland areas (“bajiales”), and forests in hilly areas (“bosque de colina”). The terrain in the Yasuni National Park where Golden-mantled Saddle-back Tamarins occur is hilly and includes terra firma forest and inundated palm ( Mauritia flexuosa, Arecaceae ) swamp. They are usually seen in the lower and middle strata of the forest and use vine tangles and dense vegetation as refuges for sleeping.

Food and Feeding. Diet of the Golden-mantled Saddle-back Tamarin consists of fruit, small animal prey, especially insects, and nectar.

Breeding. The birth season of the Golden-mantled Saddle-back Tamarin is not well defined, but along the Rio Curaray, newborns have been recorded in October—January, the first half of the wet season.

Activity patterns. There is no information available for this species.

Movements, Home range and Social organization. Information on the ecology and behavior is limited mostly to a few observations concerning group sizes and vegetation types where they have been observed. The Golden-mantled Saddle-back Tamarin lives in groups of 4-10 individuals (mean 6-3 ind/group, n = 6).

Status and Conservation. CITES Appendix II. Classified as Near Threatened on The IUCN Red List. The Golden-mantled Saddle-back Tamarin occurs in the Yasuni National Park. Its distribution is quite restricted. Forests where they occur along the Rio Yasuni in Ecuador are remote, and human densities are currently low. Nevertheless, occurrence of petroleum in the region, resulting in the construction of the Pompeya-Iro Highway,is reason for concern for the future of these forests and their wildlife.

Bibliography. Albuja (1994), Aquino & Encarnacion (1994b, 1996), Aquino et al. (2005), Encarnacion et al. (1990), Hershkovitz (1977), Heymann (2000a), Heymann & Canaquin (2003), Heymann, Encarnacion & Canaquin (2002), Kostrub (1997, 2002, 2003), Matauschek et al. (2011), Rylands, Coimbra-Filho & Mittermeier (1993), Rylands, Matauschek et al. (2011), Snowdon & Soini (1988), Thorington (1988), Tirira (2007), de la Torre (1996, 2000), de la Torre, Utreras & Campos (1995).

Figures

On following pages 25 Lesson s Saddle-back Tamar n (Saguınus fuscus) 26 Golden-mantled Saddle-back Tamarın Saguınus rrpannusl 27 Red-mamled Saddle-back Tamarın (Saguınus Iagonofus‘) 28 Andean Saddle-back Tımarın (Saguınus Ieucogenysf 29 Illıger s Saddle-back Tamann (Saguınus ıllıgeıı) 30 Geoffroy s Saddle-back Tamar n (Sagumus mgnfronsl 31 Spıx s Saddleback Tamann (Saguınus Iuscıcollıs) 32 Weddell s Saddle-back Tımarın (Saguınus Weddell!)

Distribution. NE Ecuador and N Peru , between the rios Napo and Curaray in Peru , extending W into Ecuadorto the S of the rios Napo and Indillama, and N of the Curaray.