Cordulegaster boltonii - Gold-ringed Dragonfly

Phylum: Arthropoda - Class: Insecta - Order: Odonata - Family: Cordulegastridae

Gold-ringed Dragonfly, Cordulegaster boltonii (male)

The Gold-ringed Dragonfly is a beautiful insect with a black body patterned with gold rings and a pair of bright green eyes that just meet at the top of the head. This is a very large dragonfly and quite noisy when in flight, so that some people find it rather intimidating and fear that it might sting. (It will not, of course!)

The male and female are similar in appearance and colouring, but the claspers near the end of the abdomen of the male readily distinguish it from the female.

This is a very large dragonfly with a wingspan sometimes exceeding 10cm. Body length is typically 7.5cm in males and 8.5cm in females, making it the largest British dragonfly by body length.

A dragonfly of acidic rivers and streams, in Britain this species is widely distributed and common in southern England, throughout Wales, and mainly on the western side of northern England and Scotland. (This species is not conclusively confirmed as occurring in Ireland.) On mainland Europe the Gold-ringed Dragonfly is distributed across central and southern countries, and its range extends across the Middle East and in to Asia and parts of India.

In the south Gold-ringed Dragonflies can be seen on the wing from late May or (most years) early June right through to the end of September. These fast-flying dragonflies sometimes foray well away from their natal river or stream in search of food. While in flight they use their legs as a 'net' to capture other insects, including large butterflies and even bees, which they take to a perch and then eat, discarding the wings.

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