Pseudagrion decorum,[2][1] elegant sprite or three striped blue dart,[3][4] is a species of damselfly in the family Coenagrionidae.

[1][5] It is a medium-sized damselfly with bluish green eyes with a tiny black spot on the top, paler below.

Its thorax is bluish green on dorsum, and azure blue on the lower sides.

Female has dull colored thorax and abdomen, mid-dorsal black stripe extended to the last segment.

[6] It breeds in slow flowing marshy streams and lakes in the lowland.