noun
Yakushima macaque
A subspecies of Japanese macaque endemic to Yakushima Island. Scientific name: Macaca fuscata yakui.
ヤクザルは屋久島にしか生息していない。
The Yakushima macaque lives only on Yakushima Island.
The mainland Japanese macaque (Macaca fuscata fuscata), of which the Yakushima macaque is a subspecies.
From 屋久 (Yaku, as in Yakushima) + 猿 (さる, monkey).