Bug Identifier
Luna moth caterpillar
Community identification

Luna moth caterpillar

Actias luna

Order & Family
Lepidoptera; Saturniidae
Size
Usually 55–75 mm (2.2–3 in) long when fully grown.
See this bug in the Encyclopedia

Natural Habitat

Deciduous forests, woodland edges, gardens, and shrublands across eastern North America. Larvae feed on trees such as walnut, hickory, birch, and persimmon.

Diet & Feeding

The caterpillar chews leaves from several hardwood species. Adults do not feed; they rely on stored energy and live only about a week.

Behavior Patterns

Solitary and mostly foliage-dwelling, with a green body, yellow stripes, and sparse spines. When mature, it leaves the host plant to spin a cocoon among leaf litter; adults are nocturnal.

Risks & Benefits

Harmless to people and plants at ordinary densities; its spines do not deliver a significant sting. It is an important food source for predators and contributes to forest nutrient cycling.