Ischnura pruinescens is a damselfly in the family Coenagrionidae,[3] commonly known as the colourful bluetail.

[5] Ischnura pruinescens is a small to medium-sized damselfly with a wing span around 35 to 50mm.

The females have bright yellow or orange on the synthorax and legs, pale green under the abdomen, and blue markings on segments eight and nine.

The Australian distribution covers the north-eastern segment of the continent, from the Gold Coast to Cape York Peninsula in Queensland and west to the tropical parts of the Northern Territory.

[4] The colourful bluetail inhabits freshwater pools, lakes, ponds and swamps.