Male or female?
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The easiest way to tell male from female is to look at the anal appendages. These are wide apart in your image which means a female. If they are close together and even converging then you have a male.
There are other way of course to separate the sexes, see the link below.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Great Picture, it is very clear.
Lat/Lng: 51.44, -0.02
OS grid ref: TQ377730