 In 2012 , two taxonomic synonyms ( formerly recognized as subspecies ) of N. menagensis — N. bancanus and N. borneanus — were elevated to species status , and a new species — N. kayan — was also distinguished from the same . Rachel Munds , Anna Nekaris and Susan Ford based these taxonomic revisions on distinguishable facial markings . With that , the N. menagensis species complex that had been collectively known as the Bornean slow loris became four species : the Philippine slow loris ( N. menagensis ) ) , the Bornean slow loris ( N. borneanus ) , the Bangka slow loris ( N. bancanus ) , and the Kayan River slow loris ( N. kayan ) . 
