Inchworm (Geometer moth caterpillar)

Scientific Name: Family Geometridae

Order & Family: Order: Lepidoptera, Family: Geometridae

Size: Typically 1 to 2 inches (2.5 to 5 cm) in length.

Inchworm (Geometer moth caterpillar)

Natural Habitat

Found globally in forests, gardens, and woodlands on various host plants and trees.

Diet & Feeding

Herbivorous; they feed on the leaves of trees, shrubs, and other plants, often having specific host-plant preferences.

Behavior Patterns

They exhibit a distinctive 'looping' movement because they lack middle prolegs; many species are masters of camouflage, mimicking twigs or stems to avoid predators.

Risks & Benefits

Generally harmless to humans; while most species pose no ecosystem threat, some can become agricultural or forestry pests if populations erupt and cause significant defoliation.

Identified on: 2/27/2026