Abstracto
- Preliminary results of a study on ectoparasites of Costa Rican monkeys are presented. Thirty six mantled howler monkeys (Alouatta palliata Gray, 1849) and 3 capuchin monkeys (Cebus capucinus Linnaeus, 1758) from different zones of the country were examined for ectoparasites. Fur mites of the family Atopomelidae were found on 2 of the individuals of A. palliata, which were identified as Listrocarpus alouattae Fain, 1972 (Acari: Astigmata). A statistical analysis showed differences between most measurements of these specimens and those described by Fain (1979) suggesting that there are intraspecific variations in L. alouattae.