Which primate suborder groups capuchins with humans, apes, and tarsiers, separating them from lemurs?
Answer
Haplorrhini
Capuchin monkeys belong to the suborder *Haplorrhini* within the order Primates. This classification groups them with the simians (monkeys and apes) and tarsiers. The defining feature separating haplorrhines from the other major primate suborder, *Strepsirrhini* (which includes lemurs and lorises), is related to sensory apparatus and brain complexity, particularly regarding reliance on vision. Haplorrhines generally exhibit enhanced visual acuity and possess a larger brain relative to body size compared to strepsirrhines.

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