Brown marmorated stink bugs were first seen in B.C. in Chilliwack in 2016 and have since further spread throughout B.C.

This species is native to several countries in Asia. These bugs are known to hitchhike long distances on vehicles.

These stink bugs are herbivores with a broad diet – they are known to eat fruits, seeds, green plants, and even tree bark! In other parts of North America, these bugs have become a serious pest in many crops, such as apples, peaches, sunflowers, bell peppers, grapes, hazelnuts, and many more.

They have straw-like mouthparts, which they use to inject digestive juices directly into the plant tissue. This causes bruises and blemishes on unripe fruits and a wound that may become infected, making fruits unappealing to eat.

Brown marmorated stink bugs are considered nuisance pests in human homes. During the fall and winter, these bugs like to hibernate in wooden structures, and will come together in large numbers, so that an individual home may host hundreds, or thousands of bugs.

In 2018, scientists working at the Agriculture and Agri-Food Research Center in Agassiz found the parasitoid Samurai wasp (Trissolcus japonicus) attacking Brown marmorated stink bug eggs in Chilliwack. This tiny wasp is also a non-native species, originating from the same parts of Asia where the stink bug is native, and was likely brought over accidentally along the same routes as the stink bug.

This wasp is now helping to control Brown marmorated stink bug populations in BC. Brown marmorated stink bug is designated as a Management species by the BC Provincial Priority Invasive Species List.

East Kootenay Invasive Species Council

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