Southern Green Shield Bug

Nezara viridula

Southern Green Shield Bug, Green Shield Bug, Green Stink Bug, Tomato and Bean Bug, Green Vegetable Bug

Nezara viridula MHNT verte by Didier Descouens (CC BY-SA 3.0)
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A close up of a Nezara viridula southern green shield bug on a plant
Nezara viridula MHNT verte by Didier Descouens (CC BY-SA 3.0)
1 of 6
Nezara viridula is not a fussy eater; they'll readily eat over 200 species of plant. Likewise, they will suck the sap from the fruits, seeds, leaves and stems of the plants they attack. The Southern Green Shield bug is strikingly similar to our native Common Green Shield Bug. The Southern Green was first found breeding in the London area back in 2003. You can tell these two bugs apart from a few simple tricks. Firstly, the Southern Green Shield bug is slightly larger than that of our native. Also, these bugs lack the darkened brown area near the tip of the abdomen, as seen on the Common Green. Luckily these bugs aren't too much trouble as they tend to be most abundant towards the end of the harvesting season.
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Traits

A major pest of agricultural crops.
These insects have an array of natural enemies that can help keep them under control.

Appearance

Nezara viridula can be identified by their shield-shaped body, which brightens during the breeding season. They are camouflaged to look like a small leaf and can reach up to 1.5cm in length. The nymphs (young, juvenile insects) look like small, black beetles. Depending on the age, markings can vary. They generally possess black, red, yellow and green dots on the wingcases.

Symptoms

Leaf yellowing, browning and wilting. They can cause early leaf fall and fruit fall. Mealy textures on fruits and leaves. Their feeding sometimes leaves brown/black lesions on the fruits. Heavy infestations can lead to malformed growth.

Activity

Diurnal

Personality

Order

Hemiptera

Family

Pentatomidae

Metamorphosis

Incomplete

Distribution

Europe, Asia, Africa and America
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