''Chrysolina grossa'' is a species of ''broad-shouldered leaf beetles'' belonging to the family Chrysomelidae, subfamily Chrysomelinae.
Head and pronotum show metallic blue-green colours, while elytra are bright red. It can be distinguished from Chrysomela populi for its longer antennae and wider pronotum.
It feeds on wild plants of the Lamiaceae species.
It is mainly found in France, Italy, Spain and former Yugoslavia.