Darren Bast (at Granta Park) identified it as a female Common darter, explaining:
- Key diagnostic to this species is a pale coloured leg stripe which you can see in the photo.
- The red T shaped mark at section S2 is clearly visible, as are dark pterastigma or wing spots.
- The only 2 darters seen in this area really are ruddy and common darters. Ruddy darters have jet black legs with no leg stripe.
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