
Thaumetopoea processionea - Leader of the pack
Image used on various news sites, after I contacted these for having a photo of a different species with their article about the Oak processionary.
https://www.omroepwest.nl/nieuws/3893913/Nieuwe-stap-in-het-offensief-tegen-de-eikenprocessierups
https://www.bd.nl/oss-e-o/600-nestkasten-in-den-bosch-in-strijd-tegen-processierups-in-vinkel-alleen-al-100-geplaatst~a41771bb/
https://www.destentor.nl/veluwe/zitten-ze-wel-in-een-eik-niet-iedere-rups-is-een-eikenprocessierups~a3f61853/

The Oak Processionary is a moth whose caterpillars are pests in oak forests and pose a health hazard because of their poisonous setae, which may cause skin irritation and asthma.