Processionary caterpillars

Apparently the processionally caterpillar has made an appearance in the south of England.  This is one of their nests which should not be touched or disturbed. In winter or spring, anytime from December, (or even November), until May depending on weather conditions the caterpillars leave the trees and go down to the ground, this is when they can be seen forming their long nose to tail processions as they make their way to find a place in the soil to pupate. When hatched, they touch each other to make a long chain, hence the common name of Pine processionary moth. The caterpillars have orange brown backs with bluish grey bands and bluish grey protrusions in pairs at each segment; these protrusions have little bunches of hairs “growing” from them and it is these “hairs” that can be a danger. These irritant hairs contain a highly allergenic protein which in humans can cause reactions ranging from mild itching to anaphylactic shock. All contact with sensitive skin regions, mouth, nose or eyes should be avoided. Caution should be shown with animals; dogs in particular may sniff them and this should be avoided at all cost. Necrosis of the tongue has been observed in some domestic animals and severe swelling may occur causing breathing difficulties.