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Insects and other arthropods

Green stink bug

Chinavia hilaris

Tabs group


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.

Life cycle

After mating, the females lay a dozen barrel-like eggs on the underside of a leaf. They are greenish yellow at first and become greyish pink before they hatch, after about one week. The young nymphs that emerge have distinctive white marks on the abdomen. They moult five times before reaching adulthood and reproducing.

The life cycle of the green stink bug varies from 30 to 45 days, depending on temperatures. Populations living in the north, e.g. here in Quebec, have only one generation, whereas those living in the south have two. An adult can live about two months if temperatures are warm enough. Many immature individuals overwinter buried in leaf litter or hidden under bark. They can be seen starting in the following May.

Geographic distribution

Green stink bugs are the most common shield bugs in North America. They are found in southern Canada, including Quebec, and in many US states from one end of the country to the other.


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