 Slow lorises ( genus Nycticebus ) are strepsirrhine primates and are related to other living lorisoids , such as slender lorises ( Loris ) , pottos ( Perodicticus ) , false pottos ( Pseudopotto ) , angwantibos ( <unk> ) , and galagos ( family Galagidae ) , and to the lemurs of Madagascar . They are most closely related to the slender lorises of South Asia , followed by the angwantibos , pottos and false pottos of Central and West Africa . <unk> are thought to have evolved in Africa , where most living species occur ; later , one group may have migrated to Asia and evolved into the slender and slow lorises of today . 
