Leaves reduced to lacework by caterpillars - country diary archive, 4 June 1918

4 June 1918 Most of these foliage-devourers are the larvae of geometer moths of various kinds, sometimes called loopersCaterpillars are doing their best to eat up the woods. On some of the sycamores, elms, and other trees the leaves are already reduced to lacework; on others, oaks in particular, many of the leaves have vanished. Most of these foliage-devourers are the larvae of geometer moths of various kinds; they are sometimes called loopers, on account of their habit of humping up their backs