Word: larva
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Dates: during 1910-1919
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...leopard moth, which was first noticed in June 1909 is an imported European pest, and is only injurious in its larval stage. The life of the larva is two years. It makes its way into the tree by boring through the bark where it may make great furrows in the growing layer, thus girding the limbs, or it may burrow deeper into the heart of the tree. Its burrows show that it migrates often, from one part of a branch to another or to a different one altogether...