Two families of Lorises, Nycticebus (Primates: Prosimii: Loridae) are currently recognized - slow lorises (Nycticebus coucang and Nycticebus bengalensis) and pygmy lorises (Nycticebus pygmaeus).
Reproductive patterns in Pygmy lorises (Nycticebus pygmaeus): behavioral and physiological correlates of gonadal activity.
Taxonomy, distribution and status of the lesser slow loris Nycticebus pygmaeus and their implications for captive management.