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AH_Cotesia glomerata Pieris brassicae_7261.jpg
Cabbage / Large White (Pieris brassicae) caterpillar parsitised by the parasitic wasp Cotesia glomerata, the cocoons of which sit in a silken mass next to the caterpillar's withered body. The caterpillar is still alive and wrigglign slowly. Peak District National Park, Derbyshire, UK. August.