oak processionary moth

English

A swarm of oak processionary moth caterpillars.

Noun

oak processionary moth (plural oak processionary moths)

1. Thaumetopoea processionea, a processionary native to oak forests across southern Europe, also occurring as an invasive species in northern Europe.
   • 2018 April 28, Robin McKie, The Observer‎^[1]:

     The oak processionary moth is a native of southern Europe but its range has been expanding northwards over the past 20 years and it has become established as far north as the Netherlands and northern Germany.