Asian Lady Beetle

Scientific Name: Harmonia axyridis

Order & Family: Order Coleoptera, Family Coccinellidae

Size: 5 mm to 8 mm (approximately 0.2 to 0.3 inches)

Asian Lady Beetle

Natural Habitat

Found in agricultural fields, gardens, and woodlands; famously invades homes and buildings during the autumn months to seek warmth for overwintering.

Diet & Feeding

Primarily predatory, consuming large quantities of aphids, scale insects, and other soft-bodied crop pests. They may sometimes feed on ripe fruit.

Behavior Patterns

Known for having a wide variety of colors and spot patterns. They exhibit 'reflex bleeding,' where they excrete a foul-smelling yellow liquid from their leg joints when threatened. They are highly active during the day and are strong fliers.

Risks & Benefits

Benefits: Highly effective at controlling agricultural pests like aphids. Risks: They can become an indoor nuisance pest in winter, may cause allergic reactions in some humans, can bite (though not venomous), and the yellow fluid they secrete can stain surfaces and clothing.

Identified on: 3/21/2026