Black-tailed Skimmer

Orthetrum cancellatum

Common & widespread in Southern England.

There's a limited population in Ireland, but they are expanding their range northwards in Britain.

Adult Males develop extensive blue pruinescence on their abdomen, offset by yellow lateral patches. 

The Females and Immature Males are a deep yellow colour, with wavy black lines dorsally on their abdomen.

Males and Females have the costal vein (the leading edge of the wing) yellow or black.

 Females retain their colour and markings though they become quite greyish brown with age.

This species could be confused with Keeled Skimmer or Scarce Chaser.

Flies from June-August.