leaf miner

noun

1. any of the larvae of any of numerous insects, as moths of the family Gracilariidae, that live in and feed on the parenchyma of leaves.

noun

1. any of various insect larvae that bore into and feed on leaf tissue, esp the larva of dipterous flies of the genus Philophylla (family Trypetidae) and the caterpillar of moths of the family Gracillariidae
2. the adult insect of any of these larvae