Protosticta mortoni,[1] is a damselfly species in the family Platystictidae.

[2][3] It is a large slender damselfly with black capped ultramarine blue eyes.

Its thorax is glossy black, marked with two narrow blue lateral stripes on each side.

Female is very similar to the male, but shorter and more robustly built.

[2] It is similar to Protosticta gravelyi, but can be distinguished by the prothorax blue with its posterior lobe black and by the markings on segment 8, the basal half of dorsum being unmarked.