A planthopper associated with Common Reed, Phragmites australis.  Males are macropterous (long-winged) and paler then the bright green females; females are mostly brachypterous.  The pygofer (genital segmen of the abdomen) is dark coloured in males and oval in shape from behind (broader than high);  the styles have a simple pointed tip. 

Other Chloriona

males

Photograph underside to show pygofer as well as from top down and/or in side view; detailed examination of the male genitalia is needed.  Females are very difficult to identify and it may not be possible to do so.  Always note the habitat and plant on which it was found.

Reedbeds, on Common Reed

Common

Rarely recorded