Brown Marmorated Stink Bug (Nymph)
Scientific Name: Halyomorpha halys
Order & Family: Order Hemiptera; Family Pentatomidae
Size: Nymphs range from 2.4 mm to 12 mm; adults reach up to 17 mm.

Natural Habitat
Agricultural fields, gardens, and orchards; often seeks shelter in human structures during colder months.
Diet & Feeding
Highly polyphagous, feeding on over 170 species of plants including fruits (apples, peaches, berries), vegetables, and ornamental trees.
Behavior Patterns
Goes through five nymphal stages before adulthood. Known for congregating in large numbers and emitting a pungent odor from scent glands when disturbed or crushed.
Risks & Benefits
Considered a major agricultural pest that causes significant crop damage. They do not bite or sting humans, but they are a nuisance pest in homes and can cause allergic reactions in some individuals.
Identified on: 4/10/2026