Southern Green Shieldbug Nezara viridula

Southern Green Shieldbug
Southern Green Shieldbugs coupled
The Southern Green Shieldbug is a recent immigrant to the southern UK from continental Europe.
The adult looks similar to adult native Green Shieldbugs, but with clear wing membranes and three small, light spots at the top of the "scutellum."
Southern Green Shieldbug
The underside is green in the summer.
Southern Green Shieldbug nymph
Southern Green Shieldbug nymph
The nymphs, however, are entirely different in appearance to those of the UK native Green Shieldbug nymphs.
The nymphs are also quite variable. Shown above is the final "instar" before adulthood.
Southern Green Shieldbug nymphs
Southern Green Shieldbug nymphs
Southern Green Shieldbug nymph
First or second "instar" (stage) nymphs of the Southern Green Shieldbug -- a dark damson and black background with white spots, plus orange spots on the side of the thorax.
Southern Green Shieldbugs, first instar First or second instar, dark plum background
Southern Green Shieldbug nymphs Shedding the exoskeleton to the next instar (bottom)
Southern Green Shieldbug nymph Early instar nymphs
Southern Green Shieldbug second instar nymph
Southern Green Shieldbug nymphs
Second or third instar, half plum background with white spots and half yellow background with black spots; pink edging.
Southern Green Shieldbug nymphs
First/second and second/third stages.
Southern Green Shieldbug final instar nymph
Southern Green Shieldbug nymph
Southern Green Shieldbug nymph
Final nymph instar before adulthood.