Tussock Moth (Caterpillar/Moth)
Scientific Name: Orgyia leucostigma (likely White-marked Tussock Moth based on appearance)
Order & Family: Lepidoptera: Erebidae
Size: Caterpillars reach approximately 35 mm (1.4 in); adult wingspans range from 25-35 mm.
Natural Habitat
Found in deciduous and coniferous forests, orchards, parks, and suburban gardens across North America.
Diet & Feeding
Larvae are generalist feeders on foliage of many trees including oak, birch, maple, and apple; adults do not feed.
Behavior Patterns
Caterpillars are active during the day; females are wingless and stay on their cocoons to lay egg masses covered in a protective white foam.
Risks & Benefits
The larval hairs can cause skin irritation (urticating) or allergic reactions in humans; they can be occasional pests of ornamental trees by defoliating them.
Identified on: 5/30/2026