Form: The length of stomach is 20~24mm and that of back wings is 12~19mm. The body color of the male is pistachio. There is a black stripe on the front chest and the back. The color of the nineth abdominal segment is light blue. There is round and black pattern on the top of the male’s eyes. There are two forms of the female Ischnura asiatica. One has the pistachio color like male and the other do red.
Other characters: Ischnura asiatica is one of the most common dragonflies. The larva inhabit pond or reservoir. From May to September, especially in Summer, the imagos appear. Ischnura asiatica couple fly together while mating, near the surface, and then lay eggs on the leaves of plant in the pond. During breading, the male hold the female’s front chest by his tale’s adnexitis to stand upright.