''Closterotomus norvegicus'' is a species of bugs belonging to the family Miridae, subfamily Mirinae. It can be found feeding on nettle, clover, and cannabis, as well as Compositae, potatoes, carrots and chrysanthemums. They prefer to feed on the flowers, buds and unripe fruit. The species occurs in Great Britain and continental Europe. In 1997 it was moved from the genus ''Calocoris'' to its current name.