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Blue Dasher

Pachydiplax longipennis

Description:

Teal-green eyes and periwinkle blue body. Some variety of skimmer.

Habitat:

Shaded pond area in a beer garden on a warm day

Notes:

Pruinescence gives the body a frosted appearance covering the thoracic stripes. "Males display the pruinescence on the back of the abdomen to other males as a territorial threat" (Wikipedia).

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4 Comments

CoralAvery
CoralAvery 7 years ago

I changed it to Blue Dasher and I agree. It seemed to have the body of a pondhawk and face of a dasher, but wikipedia says it has pruinosity so the coloration looks frosted and the thoracic stripes are hidden. It reflects ultraviolet and is most common with male skimmers. I guess I learned something new today. Thanks for identifying it (:
http://en.wikipedia.org/wiki/Pruinescenc...

Geodialist
Geodialist 7 years ago

Pondhawks -- eastern or western, male or female -- have green faces; Blue Dashers have white faces. I say Blue Dasher, since your specimen has a white face.

CoralAvery
CoralAvery 7 years ago

This page says they are found throughout the continental US as well as in the Pacific Northwest so I suppose Blue Dashers can be found in California. http://www.geog.ubc.ca/biodiversity/fact...

But I believe what I found is a western pond hawk since it does not have thoracic stripes and I'm sure it's not an eastern pondhawk based on the differences in abdomen and appendage shape. http://www.azdragonfly.net/compare/299

Geodialist
Geodialist 7 years ago

Looks like a male Blue Dasher dragonfly (Pachydiplax longipennis), a species that is common in the eastern USA. Are there Blue Dashers on the West Coast? http://bugguide.net/node/view/598

CoralAvery
Spotted by
CoralAvery

San Diego, California, USA

Spotted on Aug 12, 2012
Submitted on Nov 24, 2013

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