The adults in this species are 14 to 19 mm long. They have shield-shaped bodies, like all bugs in the Pentatomidae family. They are green, with orange edges, and a few dark spots on the edges of the abdomen. The base of the forewings is leathery, and the tip is membranous. These insects have piercing-sucking mouthparts.
The young bugs, called nymphs, are black when they hatch and turn green, yellow or orange as they grow. They resemble small adults, but without functional wings or reproductive organs.