American white moths conquerors--

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American white moths (Hyphantria cunea) of lepidoptera, DengE families, also called autumn screen caterpillar. It is the world's quarantine pests. From North America, widely distributed in North America, Canada and Mexico south.

A, harm: American white moths to pupa way under the ground dead branches in the bark or leaves in place, after hatching larvae are "nets, clustered nets eat leaves, leaf blade feeding after all, moved to the branches column and larvae shoots another part of" nets. 1 ~ 4 3-instar larva many "nets harm, nets screen for yellow, can reach up to 10 cm; 5 the larvae began after age from nets act, spread harm to overeating stage. For larvae social harm, but only up to hundreds of bunches of the tree