Length: male-74mm, female-84mm
Flight period: May to September (occasionally in October)
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.
Male: has a waisted appearance around S2-3 and a slight club shape to the abdomen.
Female: more parallel sided and has a very long ovipositor.