Brown Marmorated Stink Bug (nymph stage)
Scientific Name: Halyomorpha halys
Order & Family: Order: Hemiptera, Family: Pentatomidae
Size: 1.7 cm (adult), with nymphs being smaller and more rounded.
Natural Habitat
Agricultural land, gardens, and woodlands; they frequently seek shelter inside human structures and homes during winter.
Diet & Feeding
Polyphagous herbivore that feeds on a wide variety of plants including fruits, vegetables, and ornamental trees.
Behavior Patterns
Known as a hitchhiker pest; they emerge from overwintering in spring to feed and lay eggs. They release a pungent odor from scent glands when threatened.
Risks & Benefits
Benefit: None known for North America or Europe where it is invasive. Risk: Severe agricultural pest causing damage to crops; nuisance pest in homes; can cause minor skin irritation or allergic reactions in sensitive individuals.
Identified on: 6/23/2026