skeletonizer

from The Century Dictionary.

• noun In entomology, an insect which eats the parenchyma of leaves, leaving the skeleton: as, the apple-leaf skeletonizer, Pempelia hammondi.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) Any small moth whose larva eats the parenchyma of leaves, leaving the skeleton.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun zoology Any moth whose larva eats the parenchyma of leaves, leaving the skeleton behind.