Inchworm (Spanworm / Geometer Moth Larva)
Scientific Name: Family Geometridae
Order & Family: Order: Lepidoptera, Family: Geometridae
Size: Typically 1 to 2 inches (2.5 to 5 cm) in length.
Natural Habitat
Found worldwide in forests, gardens, and woodlands where host plants are present.
Diet & Feeding
Mostly herbivorous, feeding on the leaves of various trees, shrubs, and garden plants.
Behavior Patterns
Characterized by a looping 'inching' gait due to the lack of middle prolegs. Many species mimic twigs or leaf veins to avoid predation.
Risks & Benefits
Generally harmless to humans; however, large populations can cause significant defoliation of trees and crops. They serve as a vital food source for birds and other predators.
Identified on: 4/12/2026