Solitary but Social

"Solitary but social" is a type of social organization where individuals forage separately, yet some individuals sleep in the same location or share nests. Female home ranges usually overlap while those of males do not. Males usually do not associate with other males, and male offspring are usually evicted upon maturity. Among primates, this form of social organization is most common among nocturnal, prosimian species. Examples of species that can be categorized under this type of social organization include mouse lemurs, lorises, and orangutans. 

1. ^ Sussman, R.W. (2003). "Chapter 1: Ecology: General Principles". Primate Ecology and Social Structure. Pearson Custom Publishing. p. 29. ISBN 978-0-536-74363-3.

Excerpt from Wikipedia.  Of course.