Trigonobela perfenestrata is a moth in the family Crambidae. It was described by Arthur Gardiner Butler in 1882. It is found in Papua New Guinea[1] and Australia, where it has been recorded from the Northern Territory and Queensland.[2]
The wingspan is about 32 mm. Adults are dull rose, the wings spotted with orange-yellow spots, many of which have hyaline-whitish centres.[3]