Cobra Clubtail dragonflies (females)

Male and female Cobra Clubtail dragonflies (Gomphurus vastus) are nearly identical in appearance except for their terminal appendages: females have two terminal appendages (cerci); males have three (claspers). Also notice the subtle difference in the shape of their hind wings: female hind wings are rounded; male hind wings are “indented.”

Several female Cobra Clubtails were photographed during the annual mass emergence along the Potomac River at Riverbend Park, Fairfax County, Virginia USA.

The first female, shown above, has a malformed wing.

Notice part of an insect leg on the wooden beam, underneath the female’s abdomen. Is it a leftover from a late-morning snack?

Copyright © 2017 Walter Sanford. All rights reserved.

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One Response to “Cobra Clubtail dragonflies (females)”

  1. Top 10 Photos of 2017 | walter sanford's photoblog Says:

    […] 09 MAY 2017 | Riverbend Park | Cobra Clubtail (female) […]

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