Abstract
The dentitions of three species of Colobus monkeys (Colobus polykomos, Colobus badius, and Colobus verus) are compared metrically for three characters: actual tooth size, rect angle (mesiodistal diameter×buccolingual diameter), and length-breadth index (buccolingual diameter/mesiodistal diameter×100). Comparisons of actual tooth size reveal that in general the smallest tooth size is found in C, verus, a greater tooth size in C, badius, and the largest tooth size in C, polykomos. On the contrary, the degree of sexual dimorphism decreases from C, verus to C, badius to C, polykomos. Accordingly it follows that the interspecific sex differences do not correspond to the interspecific differences in the general tooth size. Moreover comparisons of rect angle show more evident relations both in tooth crown area and in its sexual dimorphism. Inn the case of length-breadth index there are no further interspecific differences. These findings are discussed with comparative data in connection with body size dimorphism.
