9.

Chestnut-bellied Titi

Callicebus caligatus

French: Titi a ventre chatain / German: Braunbauch-Springaffe / Spanish: Titi de vientre castano

Other common names: Booted Titi

Taxonomy. Callithrix caligata Wagner, 1842,

Borba, Rio Madeira, Brazil.

M. van Roosmalen and coworkers in 2002 noted that C. caligatus occurs only on the west bank of the Rio Madeira. A lectoparatype was collected from Manaquiri on the right (south) bank of the Rio Solimoes in Amazonas State, which 1s within the known distribution of C. caligatus. In 2001, C. P. Groves considered it to be a synonym of C. cupreus, but in 2005, he listed it as a full species, agreeing with the 1990 revision of P. Hershkovitz. C. caligatus is a member of the cupreus species group. It may intergrade with the distribution of C. stephennashi at the Rio Ipixuna area. Monotypic.

Distribution. Brazilian Amazon S of the Rio Solimoes-Amazonas, in the Purus-Madeira interfluvium in the Amazonas State, extending as far S and W as the Rio Ipixuna.

Descriptive notes. Head-body 31-41 cm (males) and 30-39 cm (females), tail 38-47.6 cm (males) and 38-5—-46 cm (females); weight ¢.800 g as in other titis of the C. cupreus group. Male and female Chestnut-bellied Titis are indistinguishable in size and coloration. Their bodies are predominantly reddish brown agouti, and their underparts, throat, sideburns, and lower arms are reddish. Cheiridia (hands and feet) are blackish to reddish brown. Forehead and anterior portion of crown are black.

Habitat. [Lowland Amazon rainforest at elevations of 100-200 m. As is typical of other species oftitis, the Chestnut-bellied Titi prefers lower levels of forest canopy.

Food and Feeding. There is no information available for this species.

Breeding. There is no specific information available for this species, but all titis form monogamous breeding pairs. The male provides parental care by carrying the single offspring.

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

Movements, Home range and Social organization. There is no information available for this species.

Status and Conservation. CITES Appendix II. Classified as Least Concern on The [UCN Red List. The Chestnut-bellied Titi has a relatively large range in a pristine region and there are no major threats known to be affecting it.

Bibliography. Groves (2001, 2005b), Hershkovitz (1988, 1990), Norconk (2011), van Roosmalen et al. (2002), Veiga (2008c).