Pine processionary moth: a dangerous pest that threatens forests, people and pets

The pine processionary moth (Thaumetopoea pityocampa) poses a significant threat as a destructive forest pest across southern Europe. These insects are recognized by their distinctive behavior – caterpillars moving in lengthy, organized columns, often referred to as “processions.” Despite their initial appearance, these creatures represent a serious hazard to trees, animals, and humans alike. The moth’s caterpillars exhibit peak activity during bright winter days and particularly in March and April, as detailed on the NIJZ website.

This particular species, known as the pine processionary moth, is a type of butterfly whose larval stage causes substantial damage. Prevalently found in southern Europe, North Africa, and the Middle East, the pine processionary moth has recently expanded its range northward. Warming temperatures have facilitated its spread into countries like France, Switzerland, and Hungary.

Ongoing monitoring indicates that the caterpillars remain most active during sunny winter periods and again in March and April, according to the NIJZ website.

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