Alouatta villosa (Gray, 1845)

Hidalgo-Mihart, Mircea G., Contreras-Moreno, Fernando M., Jesús-de la Cruz, Alejandro, Juárez-López, Rugieri, Bravata de la Cruz, Yaribeth, Pérez-Solano, Luz A., Hernández-Lara, Carolina, Friedeberg, Diana, Thornton, Dan & Koller-González, Juan M., 2017, Inventory of medium-sized and large mammals in the wetlands of Laguna de Terminos and Pantanos de Centla, Mexico, Check List 13 (6), pp. 711-726 : 715-716

Alouatta villosa (Gray, 1845)

Material examined. Table 2; Figure 8.

The study region is close to the area where A. villosa and A. palliata (Gray, 1849) are sympatric and where the A. villosa × A. palliata hybrid has been described ( Kelaita and Cortés-Ortíz 2013). We only observed entirely black howler monkeys without the long yellowish fur on the flanks that is characteristic of A. palliata ( Reid 2009) . For this reason, we assigned all the howler monkey observations to A. villosa . However, we acknowledge that A. villosa x A. palliata hybrids could

be present in our study area.

The species is commonly called A. pigra , but there is extensive evidence to support A. pigra the correct name ( Brandon-Jones 2006). However, we used A. villosa following Ramirez-Pulido et al. (2014).