Grass is covered with caterpillar webs in Hanover, Germany, May 25, 2011. Little caterpillars eat up vegetation and leave it covered with webs. According to butterfly expert Carsten Heinecke, the Ermine moth (Yponomeutidae) covers trees and bushes in soft cotton-like wool.

Wooden playground houses are covered with caterpillar webs in Hanover, Germany, May 25, 2011.