Euphaea cardinalis,[2][1] Travancore torrent dart,[3][4] is a species of damselfly in the family Euphaeidae.

[1] This species was considered endemic to the Western Ghats (Fraser, 1934) and it was known to occur only in south of the Palghat Gap.

[1][6] It is a medium-sized damselfly with black head and brown-capped pale grey eyes.

Its thorax is black, marked with bright ochreous-red antehumeral and humeral stripes.

Segment 8 has a narrow and 9 has a broad yellow apical annule, covering dorsal half.