"Ceriagrion cerinorubellum" is a species of damselfly in the family Coenagrionidae. It's commonly known as the Bi-coloured damsel or Orange-tailed marsh dart. They attack and feed on other species of smaller damselflies. Its bluish green head and orange base and the tip of the abdomen is quite distinctive and cannot be mistaken for other species. The female has a similar appearance but has slightly a little darker marking.