A greenish-brown leafhopper with darker markings on vertex.  Examination of internal male genitalia is need for identification; females cannot be verified.

Other Macrosteles

males

Males only: photographs of specimen and internal genitalia

marsh, wet grassland

Local (ref.: UK Auchenorrhyncha checklist 2021)

Rarely recorded

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