Tussock Moths

Identification

Size: Caterpillars up to 30–40 mm long

Color: Varied, often grey, brown, or black with distinctive tufts

Description: Tussock moth caterpillars are hairy larvae with distinctive tufts along their bodies. They are commonly found on trees and shrubs, where they feed on foliage and may cause visible plant damage.

Tussock moths are primarily outdoor pests that are most noticeable during their larval stage. The caterpillars feed on a wide range of trees and ornamental plants, sometimes causing defoliation when present in large numbers. While they are part of the natural ecosystem, their activity can become problematic in residential and commercial settings.

These pests are typically active in spring and summer when caterpillars emerge and begin feeding. As they mature, they may wander away from host plants in search of sheltered places to pupate, occasionally bringing them into contact with buildings and outdoor areas.

Tussock moth caterpillars are covered in fine hairs and distinctive tufts, which can cause mild skin irritation or allergic reactions in some individuals. For this reason, they should not be handled directly.

Tussock moth caterpillars are easily recognized by their hairy appearance and unique tufts along their backs. They are most often seen on trees, shrubs, fences, and exterior walls.

Look for visible feeding damage on leaves, along with the presence of caterpillars clustered on plants or crawling on outdoor surfaces.

Hairy caterpillars with distinct tufts or “tussocks”
Visible leaf damage or defoliation on trees and shrubs
Caterpillars found on exterior walls, fences, or outdoor furniture
Increased activity during spring and summer
Presence of cocoons attached to surfaces

Tussock moth caterpillars are usually found outdoors on host plants such as trees, hedges, and ornamental shrubs. They may also appear on the exterior of buildings as they move to find sheltered areas for pupation.

In some cases, they can be found around entry points like doors and windows, especially if nearby vegetation is heavily infested. Outdoor areas such as gardens, patios, and walkways are common places to encounter them.

Managing vegetation and limiting exposure to infested plants is key to reducing tussock moth activity around your property. Regular inspection of trees and shrubs can help identify early signs of infestation.

Avoid direct contact with caterpillars, and consider trimming back heavily affected branches where practical. Maintaining a tidy outdoor space can reduce suitable habitats for larvae and cocoons.

For larger infestations or ongoing issues, professional pest control services can safely manage populations and help protect your property from further damage.