Brimstone Butterfly caterillar

Brimstone Butterfly caterillar

Observation - Brimstone Butterfly caterillar - UK and Ireland. Description: caterpillar of the Brimstone Butterfly feeeding on its favourite foodplant, the shrub Alder Buckthorn

caterpillar of the Brimstone Butterfly feeeding on its favourite foodplant, the shrub Alder Buckthorn