Dirt-colored Seed Bug (specifically Ragwort Seed Bug)

Scientific Name: Neolethaeus dallasi (likely) or Rhyparochromus vulgaris

Order & Family: Hemiptera: Rhyparochromidae

Size: 7 to 8 mm (approximately 0.3 inches)

Dirt-colored Seed Bug (specifically Ragwort Seed Bug)

Natural Habitat

Found in leaf litter, under stones, or inside homes during colder months searching for shelter.

Diet & Feeding

Primarily feeds on seeds of various plants using piercing-sucking mouthparts.

Behavior Patterns

Often seen overwintering in structures or under bark; they are terrestrial and crawl along the ground searching for fallen seeds.

Risks & Benefits

Harmless to humans and pets; they do not bite or sting. They are considered nuisance pests when they enter buildings in large numbers.

Identified on: 6/8/2026