Bug Identifier
Wheel bug nymph (assassin bug)
Community identification

Wheel bug nymph (assassin bug)

Arilus cristatus

Order & Family
Hemiptera; Reduviidae
Size
Nymphs are about 6–15 mm long; adults reach roughly 25–36 mm.
See this bug in the Encyclopedia

Natural Habitat

Gardens, woodland edges, orchards, and other vegetation across much of North America. It commonly rests on leaves and trunks while hunting.

Diet & Feeding

A predatory true bug that pierces caterpillars, beetles, aphids, and other insects with its rostrum, then sucks out their fluids.

Behavior Patterns

Nymphs pass through several wingless stages before becoming adults; the pictured individual is likely a late nymph. They ambush prey and may defend themselves with a painful bite if handled.

Risks & Benefits

Highly beneficial as a natural pest-control predator, though it can bite people when restrained; the bite is painful but not medically dangerous for most individuals.