Chrysolina herbacea - Dorsal
Quite hard to distinguish from some other Chrysolina species, such as graminis, fastuosa and especially coerulans. The latter normally being blue and herbacea green, but exceptional green coerulans and blue herbacea do exist(!) Always best to check male genitalia. This one is from a population in arboretum Poortbulten near De Lutte, Netherlands where it coexists on Mentha aquatica together with Ch. coerulans and Ch. polita. At the time it was the most northern population in the Netherlands and it may very well still be.
Other images here:
''Chrysolina herbacea'', also known as the Mint Leaf Beetle, is a species of beetle in the family Chrysomelidae.