Brown Marmorated Stink Bug

What is it?

Brown Marmorated Stink Bug (Halyomorpha halys) is an agricultural pest found in Asia, notably China, Japan, and Korea; it has aggressively invaded the US and could successfully establish in New Zealand.

This insect feeds on more than 300 hosts, primarily fruit trees and woody ornamentals but also field crops. Almost any crop can be at risk, including: citrus; pipfruit; stonefruit; berries and grapes; asparagus; soybeans and maize; honeysuckle; maple; butterfly bush; cypress, hibiscus; and roses.

Adults generally feed on mature and immature fruit, while nymphs feed on leaves and stems as well as fruit. It severely disfigures fruit and renders it unmarketable, which results in control costs and production losses. Brown marmorated stink bug (BMSB) damage to woody ornamentals and forest trees has been reported as cosmetic only.

BMSB is not a risk to human health but is a public nuisance. When disturbed or crushed it emits a characteristic, unpleasant and long-lasting odour.

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What can I do?

Horticulturalists and home gardeners: Report any suspect finds to MPI on 0800 80 99 66. If possible photograph and/or collect samples.

Travellers and those receiving mail from overseas: Please make sure you open luggage and mail from overseas in an enclosed space to contain any hitch-hiking pests.