Burmagomphus pyramidalis, the sinuate clubtail, is a species of dragonfly in the family Gomphidae. It is found in India[1] and Sri Lanka. There are 2 subspecies, where they are geographically separated.[2]
It is a medium sized dragonfly with black thorax, marked with greenish-yellow. There is a sinuous dorsal stripe which is formed by the union of an ante-humeral with a humeral stripe. Sides of the thorax are yellow, marked with a narrow, black stripe on the postero-lateral suture and on the lower half of the anterior suture. Wings are transparent, slightly tinted with saffron at bases. Abdomen is black, marked with yellow. Segment 1 has a triangular mark on dorsum at apex and a broad baso-lateral spot. Segment 2 has a dorsal stripe and a very broad spot on sides. Segment 3 to 8 have narrow basal rings. Segment 9 has its apical half yellow. Segment 10 is entirely black. Anal appendages are black. Female is similar to the male.[3] [4]
It is found on the river sides and on the rocks in the streams.[3]