Here's a breakdown:
* Primates is the overarching order that includes all monkeys, apes, and prosimians.
* Haplorhini is a suborder within primates that includes monkeys, apes, and tarsiers.
* Strepsirrhini is the other suborder of primates, which includes lemurs and lorises.
Therefore, humans, being apes, belong to the Haplorhini suborder.