small tortoiseshell butterfly caterpillar on nettle a closeup of a european insect in its natural habitat schwelm

aglais urticae small tortoiseshell raupe nettle urtica dioica insect germany nrw schwelm macro wildlife nature german european plant detail closeup invertebrate lepidoptera larva herbivore meadow environment ecology flora natural habitat caterpillar summer ecological balance life host butterfly plantinsect relationship landscape