description Oak processionary moth Overview
The oak processionary moth (Thaumetopoea processionea) is a European moth whose caterpillars feed on oak leaves and can defoliate trees during outbreaks. The larvae are named for their habit of moving in nose-to-tail processions and for the communal silk nests they build on trunks and branches. They also carry thousands of urticating hairs containing an irritant that can cause skin rashes, eye inflammation, and breathing difficulties in humans and animals, so nests remain hazardous even after the caterpillars have left.
help Oak processionary moth FAQ
Why is the oak processionary moth called processionary?
Its caterpillars move in nose-to-tail lines, forming processions as they travel. The larvae also build communal silk nests on oak trunks and branches.
What trees does the oak processionary moth attack?
The caterpillars feed mainly on oak leaves. During outbreaks, their feeding can defoliate trees and weaken them, especially when repeated damage occurs.
What is the scientific name of the oak processionary moth?
Its scientific name is Thaumetopoea processionea. It is a European moth whose caterpillars are associated with oak forests, parks, and roadside trees.
Why should people avoid oak processionary moth caterpillars?
The caterpillars have irritating hairs that can cause skin and respiratory problems when disturbed. Their communal nests on oak trunks are therefore treated as a public-health concern in affected areas.
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