Common Clubtail (Gomphus vulgatissimus)
STATUS: NOT IN SOMERSET
This species is not found in Somerset and is unlikely to occur here. It is a very striking dragonfly and well worth seeing if you get the chance.
Males have a black abdomen with yellow markings; the thorax is black and pale green. When immature, the thorax is black and yellow. They have a clubbed tail.
Females have a black-and-yellow abdomen and thorax. The abdomen is much thicker and more uniform.
It is not easily confused with any other species.

Male (Immature)
Male (Immature)
Male (Immature)
Male (Immature)
Male (Immature)
Male (Immature)
Male (Immature)
Male (Immature)
Male (Adult)
Male (Adult)
Male (Adult)
Male (Adult)
Male (Adult)
Male (Adult)
Female (Immature)
Female (Immature)
Female (Immature)
Female (Immature)
Female (Immature)
Female (Immature)
Female (Immature) being buzzed by a common damselfly
Female (Immature) being buzzed by a common damselfly
Female (Teneral)
Female (Teneral)
Want to See 
Quite rare in Britain, this species is found mainly in the southern half of the UK.
It favours slow-moving, meandering rivers.
It appears to have good and bad years at specific locations. 

Especially Good
River Severn - North of Tewksbury up to Birmingham.
River Thames - Around Goring.
River Wye.
Best to check iRecord for more specific locations.

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