word-forming element meaning "eating, feeding on," from Latin -phagus, from Greek -phagos "eater of," from phagein "to eat," literally "to have a share of food," from PIE root *bhag- "to share out, apportion; to get a share."
<a href="https://www.etymonline.com/word/phyllophagous">Etymology of phyllophagous by etymonline</a>
Harper, D. (n.d.). Etymology of phyllophagous. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/phyllophagous