Cranefly

A female cranefly, probably Tipula vernalis (Diptera: Tipulidae) judging by the venation and dark patches on the wings, and the dark band running down the top of the abdomen.  I usually find craneflies awkward to photograph because their sticking-out legs distract my camera's auto-focus, but in this case the legs are nicely wrapped round the flower head, so there was no problem.

Photo taken in Whiteknights Park, Reading, UK, on 2010-05-26