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The oak processionary (OPM) (Thaumetopoea processionea) is a moth whose caterpillars can be found in oak forests, where they feed on oak leaves, causing significant damage. They travel in nose-to-tail processions (hence their name), often arrow-headed, with a leader followed by rows of several caterpillars abreast. [ 1 ]
Thaumetopoea is a genus of moths belonging to the family Notodontidae. It was first described by Jacob Hübner in 1820. In their caterpillar form, they bear the vernacular name of processionary because their gregarious larvae conspicuously move in single file. The adults live a few days without feeding.
The family Thaumetopoeidae—the "processionary moths"—comprises about 100 species, of which three have been recorded in Great Britain: Oak processionary caterpillar. Thaumetopoea pityocampa, pine processionary — probably rare immigrant (otherwise imported) Thaumetopoea processionea, oak processionary — immigrant
The oak processionary moth—a species endemic to Southern Europe, which damages forests and releases hairs that can irritate skin, eyes and airways—established a foothold in the U.K. in the ...
The larval stage of some Thaumetopoeinae are known as processionary caterpillars, so named because they move in columns in search of food, resembling a procession. [5] Some of the species, like the pine and oak processionaries, can constitute a health hazard due to their urticating hairs. Caterpillars of the pine processionary (Thaumetopoea ...
The adult is a stout furry moth which holds its wings like a tent over the body, in the manner of the eggar moths (Lasiocampidae).The adult is larger than the oak processionary, Thaumetopoea processionea, has a crescent marking on the wings (unlike the pale eggar moth; the oak processionary has an indistinct marking), and is found in coniferous rather than broad-leaved forests.
Oak processionary moth (Thaumetopoea processionea) [37] Musotima nitidalis , from Australia and New Zealand and first found in Dorset in 2009. It has since spread across southern England to Essex and is thought to have been originally imported with tree ferns .
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