Macropsis is a very difficult genus of hoppers, mainly becasue of the variation in colour and markings.  Macropsis prasina is usually bright green, with green veins in the forewing.  Males have a black spot at the base of the hind tibia.   Length 4.3mm - 5.1mm; females larger than males. It is associated with sallows.

other Macropsis especially M infuscata, M albae, M marginata

A set of photographs of a specimen showing key features; reference to the key in Le Quesne (1965) is recommended, and dissection of female and male gentialia may be needed to confirm identification.  Note sex, length and associated plant species.

Sallow

Local (ref.: UK Auchenorryncha checklist 2021, on British Bugs website)

rarely recorded