Length 4 to 5 mm.  A brownish or greenish leafhopper associated with pine trees.  Coloration is quite variable, and a form with a blue suffusion may be found.   The dark wavy line on the vertex and the scutellar markings are diagnostic. 

Good quality field photos or photos of a specimen, showing vertex and scutellum

Usually found on pines or nearby trees.

Adult: July to October.

Local (ref.: UK Auchenorrhyncha checklist 2021)

Occasional on host plant, Scots Pine

https://www.britishbugs.org.uk/homoptera/Cicadellidae/Grypotes_puncticollis.html