Blue Dasher

Pachydiplax longipennis


Male blue dasher dragonfly perched on the tip of a twig, with dew on its wings
A mature blue dasher male (Pachydiplax longipennis) has a blue body with a dark abdomen tip, white face, turquoise eyes. The thorax has slanted black and yellow stripes. The wings have an amber cast on the hindwing bases.
Nappadol Paothong
Other Common Name
Swift Long-Winged Skimmer; Blue Pirate

Libellulidae (skimmers) in the order Odonata (dragonflies and damselflies)


Blue dasher males and females look quite different. Both have a white face, a black abdomen tip, and slanted black and yellow stripes on the thorax. There is an amber cast on the hindwing bases. But males are blue and females are striped black and yellow.

Mature blue dasher males are chalky blue with a dark abdomen tip, white face, and turquoise eyes. There's a wedge of rust or yellowish color on each side of the front part of the abdomen, behind the wings. Younger males look like females. Males intermediate in age display a mix of mature male and female characteristics.

Female blue dashers have a pair of yellow stripes on each side of the top of the abdomen; a white face; and (usually) eyes that are divided into two sections: rusty brown above and sky blue or gray below. There is a small tuft of white or pale yellow at the tip of the abdomen.

Learn more about this and other dragonflies on their group page.


Closeup of a male blue dasher's face
Blue Dasher Face
Male blue dashers have beautiful turquoise eyes that are accentuated by the species' characteristic pure white face.


Male blue dasher dragonfly perched on a twig
Blue Dasher Dragonfly Male
Blue dashers are one of many dragonfly species that hunt mosquitoes, midges, gnats, and other tiny flying insects.