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Photo#304532
Black/Blue Dragonfly (side) - Rhionaeschna multicolor

Black/Blue Dragonfly (side) - Rhionaeschna multicolor
Centennial, Arapahoe County, Colorado, USA
July 15, 2009
Side view. I'm assuming this is a mosaic darner (genus Aeshna). It is the largest dragonfly I've ever seen around here in Colorado. Normally I see dragonflies out and about during the day, but this one ran into our screen door late last night, drawn to our porch light.

Images of this individual: tag all
Black/Blue Dragonfly - Rhionaeschna multicolor Black/Blue Dragonfly (side) - Rhionaeschna multicolor

Moved
Moved from Darners.

Blue-eyed Darner
As Jason said, this should be a Blue-eyed Darner (Rhionaeschna multicolor). Spatterdock does not occur in Colorado.

Moved
Moved from Dragonflies.

Moved
Moved from ID Request.

Blue-eyed or Spatterdock Darner?
I'm not sure the range of the Spatterdock Darner but this sure looks like one. The Blue-eyed darner is common in western USA and is almost identical to Spatterdock. You might want to check on both species. The blue face and eyes along with fairly narrow and straight thoracic stripes are key ID features.

 
Blue-eyed
by range

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