Junk Bug (also known as Trash Bug or Aphid Lion)
Scientific Name: Chrysopidae (larva)
Order & Family: Order: Neuroptera, Family: Chrysopidae
Size: Typically 1–10 mm (excluding the debris pile)
Natural Habitat
Gardens, agricultural fields, forests, and occasionally indoors on plants; generally wherever aphids are present.
Diet & Feeding
Carnivorous; feeds primarily on aphids, mealybugs, thrips, mites, whiteflies, and insect eggs.
Behavior Patterns
The 'Junk Bug' is actually the larval stage of the Green Lacewing. It exhibits a unique camouflage behavior where it collects debris—such as the hollowed-out exoskeletons of its prey, moss, or bark—and piles it onto its back using specialized bristles. This disguises it from predators (like birds) and allows it to ambush prey without being detected.
Risks & Benefits
Benefits: Highly beneficial to biological pest control; a single larva can consume hundreds of aphids per week. Risks: Generally harmless to humans, though they may nip if handled roughly (feels like a tiny pinprick).
Identified on: 3/7/2026