<P> Geoffroy's tamarin is the smallest Central American monkey, with an average size of about 0.5 kilograms (1.1 lb). The Central American squirrel monkey and Panamanian night monkey are almost as small, with average sizes of less than 1.0 kilogram (2.2 lb). The Guatemalan black howler has the largest males, which average over 11 kilograms (24 lb). The spider monkey species have the next largest males, which average over 8 kilograms (18 lb). </P> <P> One Central American monkey, the black - headed spider monkey, is considered to be Critically Endangered by the International Union for Conservation of Nature (IUCN). Geoffroy's spider monkey and the Guatemalan black howler are both considered to be Endangered . The Central American squirrel monkey had been considered endangered, but its conservation status was upgraded to Vulnerable in 2008 . The Coiba Island howler is also considered to be vulnerable . The white - headed capuchin, the mantled howler and Geoffroy's tamarin are all considered to be of Least Concern from a conservation standpoint . </P> <P> Monkey watching is a popular tourist activity in parts of Central America . In Costa Rica, popular areas to view monkeys include Corcovado National Park, Manuel Antonio National Park, Santa Rosa National Park Guanacaste National Park and Lomas de Barbudal Biological Reserve . Corcovado National Park is the only park in Costa Rica in which all the country's four monkey species can be seen . The more accessible Manuel Antonio National Park is the only other park in Costa Rica in which the Central American squirrel monkey is found, and the white - headed capuchin and mantled howler are also commonly seen there . Within Panama, areas to view monkeys include Darién National Park, Soberanía National Park and a number of islands on Gatun Lake including Barro Colorado Island . In addition, Geoffroy's tamarin can be seen in Metropolitan Natural Park within Panama City . In Belize, the easily explored Community Baboon Sanctuary was established specifically for the preservation of the Guatemalan black howler and now contains more than 1000 monkeys . </P> <Table> <Tr> <Td> Latin Name </Td> <Td> Latin binomial name, or scientific name, of the species </Td> </Tr> <Tr> <Td> Common Name </Td> <Td> Common name of the species, per Wilson, et al. Mammal Species of the World (2005) </Td> </Tr> <Tr> <Td> Family </Td> <Td> Family within New World monkeys to which the species belongs </Td> </Tr> <Tr> <Td> Average Size - Male </Td> <Td> Average size of adult male members of the species, in kilograms and pounds </Td> </Tr> <Tr> <Td> Average Size - Female </Td> <Td> Average size of adult female members of the species, in kilograms and pounds </Td> </Tr> <Tr> <Td> Conservation Status </Td> <Td> Conservation status of the species, per IUCN as of 2010 </Td> </Tr> <Tr> <Td> Range </Td> <Td> Countries in which the species occurs; countries outside Central America shown in italics </Td> </Tr> </Table>

Central and south american monkey beginning with c