How many different species of primates exist?

The number of different species of primates is estimated to be around 400. This number includes a wide variety of primate species, ranging from lemurs and tarsiers to monkeys and apes, reflecting the diversity within the order Primates. Primates are classified based on various factors, including their evolutionary relationships, morphological characteristics, and geographic distribution, which all contribute to determining the total number of recognized species.

This figure is significant when discussing biodiversity and conservation, as primates play critical roles in their ecosystems and often serve as indicators of environmental health. The other estimates presented do not accurately reflect the current consensus among primatologists and taxonomists, thus reinforcing the validity of the figure of approximately 400 species.