Step-by-step explanation:
A xylophagous insect feeds the wood and decaying parts of the woods.
In their digestive system symbiotic bacteria is present which helps in the breakdown of the cellulose.
Examples of xylophagous insects are furniture beetles, Beavers, deathwatch beetle, Shipworms.
Whereas a phyllophagous insect feeds plants and leaves.
Examples of phyllophagous insects are giraffe, insects, bears, elephants, koala, and deer.