1) Caterpillar 1) Destroyer 
• (n.) The larva of two species of geometrid moths which are very injurious to fruit and shade trees by eating, and often entirely destroying, the foliage. Other similar larvae are also called cankerworms.
Can'ker·worm` noun (Zoology) The larva of two species of geometrid moths which are very injurious to fruit and shade trees by eating, and often entirely destroying, the foliage. Other similar larvæ are also called cankerworms. » The autumnal species ( Anisopteryx pometaria ) becomes ...
The cankerworm are two destructive caterpillars - the spring cankerworm (Paleacrita vernata) and the autumn cankerworm (Also phila pometaria) - found in the USA from Maine to Texas. The eggs are laid on fruit and shade trees, and the larvae frequently destroy the foliage of whole orchards in a few days. The larvae feed on most broad-leaved trees an...
[n] - green caterpillar of a geometrid moth
noun green caterpillar of a geometrid moth; pest of various fruit and shade trees