Answer: tarsiers

AnswerCrossword Clue
TARSIERSTree-dwelling primates
TARSIERSLemur's relatives.
TARSIERSNocturnal primates
tarsierssmall, arboreal, nocturnal primate of the genus Tarsius, of Indonesia and the Philippines, having a long thin tail, very large immobile eyes, and prominent pads on the fingers and toes: all populations are dwindling
tarsiersTARSIER, a nocturnal primate