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Length: male-74mm, female-84mm
A striking, black insect with yellow rings along the length of the abdomen. The female is the UKs longest dragonfly because of her long ovipositor. The bright green eyes meet only at a point on the top of the head.
The male has a waisted appearance around S2-3 and a slight club shape to the abdomen.
The female is more parallel sided and has a very long ovipositor.
Breeds in acidic rivers and streams of all sizes. May be found away from its breeding habitat over heathland.