For example, glyphosate is an inhibitor of the tryptophan biosynthesis pathway. Insecta is the largest class of the Phylum Arthropoda, but insects are not the only arthropods which infest plants. Arthropods have segmented bodies. Characteristically, insects have a cephalic area, a thorax and an abdomen, with three pairs of legs originating from the thorax. The cephalic region contains oversized, compound eyes.
Many insects undergo a complex metamorphosis during their life cycle.
Insects are damaging to a plant in one or more of their life cycle phases. Larval form of moths and butterflies. They are voracious, they consume several times their weight in leaves per day. Beetles are both chewing and sucking insects. Adult Japanese beetle, weevils.