Nyctimystes perimetri, also known as the archipelago big-eyed treefrog, is a species of frog in the subfamily Pelodryadinae of the family Hylidae.

[3] It has also been suggested that the Rossel Island population might represent a distinct species.

The palpebral venation consists of oblique to near-vertical lines, with only few horizontal interconnections.

The outer fingers are about half-webbed, whereas the toes are webbed to the base of the discs or slight less.

There are no known threats to this species; habitat on Tegula and Rossel remains in reasonable condition, despite logging in the past.