Status: Not threatened, but may have declined outside southern England.
Habitat: Various open habitats
Host plant: Bedstraws (Galium), crosswort (Cruciata laevipes) and woodruffs (Asperula)
Overwintering: Adults may be buried in winter; they may be active during mild winter periods.
Food: Adults and larvae feed on leaves and stems of bedstraws
Other notes: Random, dense, moderately-sized punctures. After rounded side angles, pronotum constricts less sharply than in T. tenebricosa. Superficially similar to Chrysolina violacea, but this has orange-brown tarsi and palpi (with tarsi usually much paler than the rest of the legs - femora and tibiae are metallic purple).