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Do Oak Eggar caterpillars eat oak leaves? There were no trees within half a mile.
Mark. North Wales.
the Oak Eggar, despite its name, does not feed on Oak, but is so-called because the shape of its cocoon is acorn-like. The foodplants are mainly heather (Calluna) and bilberry (Vaccinium myrtillus), but also include bramble (Rubus), Sallows (Salix), broom (Cytisus scoparius), sloe (Prunus spinosa), hawthorn (Crataegus), hazel (Corylus) and Sea-buckthorn (Hippophae rhamnoides).
Hope this helps
Thats good, plenty of heather and bilberry around.
Lat/Lng: 53.0109, -4.0889
OS grid ref: SH599479