Eupteryx melissae

Length 3 mm, associated with Sage and other labiates.  Identification of Eupteryx species can be difficult and requires careful examination of markings on vertex, pronotum and forewings.   A small pale yellowish-green leafhopper with brown-ringed cells in the forewings and 3 large rounded spots on the vertex. 

Eupteryx decemnotata, also on sage.

Good quality photographs from side, top down and face to show all spots.

On sage, or other labiates - e.g. lemon balm and catmint.

Adult: May to October, this species may overwinter

Common (ref: UK Auchenorrhyncha checklist 2021)

Fairly frequent

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