mustached monkey; moustached guenon
A species of guenon (Cercopithecus cephus) with a distinctive white mustache-like marking. Primarily a zoological term.
The mustached monkey lives in the tropical rainforests of Africa.
I saw a troop of mustached monkeys at the zoo.
Katakana spelling is common for animal names; usually written in kana.
Kanji spelling is rare; the word is usually written in kana.
From 口髭 (くちひげ, 'mustache') + 猿 (さる, 'monkey'), referring to the white facial marking resembling a mustache.