
Community identification
Asian Lady Beetle (or Harlequin Ladybird)
Harmonia axyridis
- Order & Family
- Order: Coleoptera; Family: Coccinellidae
- Size
- 5.5 mm to 8.5 mm in length
Natural Habitat
Found in gardens, orchards, and agricultural fields; frequently invades homes and buildings during autumn to overwinter.
Diet & Feeding
Primarily predatory, feeding on aphids, scale insects, and other soft-bodied agricultural pests.
Behavior Patterns
Notable for their high variability in color and spots. They exhibit 'reflex bleeding' (releasing a foul-smelling yellow fluid from leg joints) when threatened and aggregate in large numbers on sun-facing walls in late fall.
Risks & Benefits
Benefits: Highly effective biological control for plant pests. Risks: Can be a domestic nuisance, may cause allergic reactions or 'bites' in humans, and can stain surfaces with their defensive secretions.