Large Milkweed Bug (nymphs)

Natural Habitat

Commonly found in fields, meadows, gardens, and any area where milkweed plants grow, especially in North and Central America.

Diet & Feeding

Primarily feed on the seeds of milkweed plants (Asclepias species), using their piercing-sucking mouthparts to extract fluids. They may occasionally feed on other seeds if milkweed is scarce.

Behavior Patterns

Milkweed bugs undergo incomplete metamorphosis. Nymphs, like those pictured, usually congregate in groups, especially on milkweed plants, feeding on seeds. Adults can fly. They often overwinter as adults in sheltered locations.

Risks & Benefits

Generally considered harmless to humans and pets. Their primary ecological role is as seed predators of milkweed, which can marginally influence milkweed populations. They are not typically considered agricultural pests.

Identified on: 8/24/2025