Green potato bug

Adults are bright green, range in length from 8.25 to 10.4 mm (0.325 to 0.409 in), and have pointed humeri (shoulders). The first and second instar nymphs are much smaller, primarily black and white, with some patches of red or brown. Later nymph stages are pale green with black patches on the abdomen.

Adults usually lay 14 eggs together in a mass on the undersides of leaves. Bugs emerge and stay near the egg mass until shedding their skins. Similar to other pentatomids, Cuspicona simplex progresses through five juvenile stages called nymphs, and finally to adult. Adults overwinter on the base of plants or in loose soil until late spring, when they aggregate to mate and lay eggs. The total development time from egg to adult depends on temperature, but takes between 28 and 30 days at a constant temperature of 21 °C (70 °F).