False Chinch Bug

Scientific Name: Nysius raphanus

Order & Family: Hemiptera: Lygaeidae

Size: 3 to 4 mm in length

False Chinch Bug

Natural Habitat

Found widely across North America in grasslands, weed patches, and agricultural fields; often migrates to residential walls and gardens when host weeds dry up.

Diet & Feeding

Feeds on a variety of plants by sucking juices, primarily targeting mustard family (Brassicaceae) plants, but can damage lettuce, potatoes, and sunflowers.

Behavior Patterns

They are known for massive aggregations, often numbering in the thousands, during hot, dry spells. They undergo simple metamorphosis (egg, nymph, adult).

Risks & Benefits

Generally considered a nuisance pest rather than a threat; they do not bite humans or pets and do not damage structures, though they can damage young garden plants through feeding.

Identified on: 3/21/2026