2. 1. BY CHEWING
Insects feed by chewing some portions of
the plants like leaves, stems, flowers and fruits.
They have horn-like jaws, which they use for
biting and chewing. Grasshoppers, caterpillars,
grubs and beetles are examples of theses
5. 2. BY SUCKING
Insects also nourish themselves by sucking
plant juices and nectar. These are characterized
by sharp, slender, hollow beaks, which they insert
under the surface of plants to suck their juices.
This mouth part is called the proboscis. San Jose
scales, aphids, plant lice, squash bugs and other
tree bugs are sucking insects
11. 3. BY LAPPING
Mouthparts of these insects enable them
to lap or lick liquids from the outer surfaces of
objects on what they feed. Apple maggots and
cherry fruit flies are example of lapping insects.