Brown Marmorated Stink Bug
Scientific Name: Halyomorpha halys
Order & Family: Order: Hemiptera, Family: Pentatomidae
Size: Approximately 12 to 17 mm (0.5 to 0.7 inches) in length

Natural Habitat
Typically found on host plants such as fruit trees and ornamental shrubs during the spring/summer; frequently enters homes, garages, and attics to overwinter in fall.
Diet & Feeding
Herbivorous. It uses piercing-sucking mouthparts to feed on a wide variety of plants, including fruits (apples, peaches), vegetables (tomatoes, corn), and ornamentals.
Behavior Patterns
Known for the 'stink' it emits from scent glands when disturbed or crushed. In the autumn, they exhibit aggregating behavior, gathering in large numbers on the sides of buildings to seek warmth indoors.
Risks & Benefits
An invasive agricultural pest that causes significant damage to crops. They do not bite or sting humans, but they are a major nuisance pest in homes. They pose no direct medical risk but can cause allergic reactions in some individuals.
Identified on: 3/18/2026