larvae of the bird-cherry ermine (yponomeuta evonymella) in their cocoon in a white web on a tree

animal birdcherry ermine host wildlife yponomeuta evonymella botanic botany branch caterpillars closeup cocoon crawl creature entomology fauna flora flying foliage forewings garden green group infestation infested insect larva macro moth nature nest outdoors parasite park pest plant pupate resting rows silk spots summer sunlight tubular web white wild wings young larvae bird-cherry tree developing moths