Brown Marmorated Stink Bug Nymph
Scientific Name: Halyomorpha halys
Order & Family: Order: Hemiptera, Family: Pentatomidae
Size: 2.4 mm to 12 mm depending on the nymphal stage (instar)
Natural Habitat
Agricultural fields, gardens, and fruit orchards; often found on exterior walls or inside homes during colder months
Diet & Feeding
Herbivorous; uses piercing-sucking mouthparts to feed on various fruits, vegetables, and ornamental plants
Behavior Patterns
Goes through five nymphal stages before reaching adulthood. They are known for gathering in large numbers and seeking shelter indoors to overwinter.
Risks & Benefits
Non-venomous and no significant health risk to humans, but a major agricultural pest. They release a pungent odor when threatened or crushed.
Identified on: 3/12/2026