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The female has an isolated spot on the thorax and a narrow antehumeral stripe. The male has all blue segments 1,2,9 and 10.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Lat/Lng: 54.375277777778, -0.53277777777778
OS grid ref: SE954987
mature mainly pine woodland with broad tracks through with grasses/flowers and a few ponds - also near heather moorland.