What type of metamorphosis do Chinch bugs undergo?

Chinch bugs undergo incomplete metamorphosis, which involves three life stages: egg, nymph, and adult. Incomplete metamorphosis means that the insects do not have a pupal stage; instead, the nymphs resemble smaller versions of adults and gradually develop into their mature form through a series of molts. This type of metamorphosis allows for a more continuous development and feeding throughout their life cycle, as the nymphs are active and can feed on plants from an early stage.

The other options refer to different types of life cycles found in insects. Complete metamorphosis includes four distinct life stages: egg, larva, pupa, and adult. This is characterized by a significant transformation between stages, such as caterpillars turning into butterflies. Gradual metamorphosis is similar to incomplete metamorphosis but often refers to insects that experience fewer molts and a more linear development without the distinct stages seen in complete metamorphosis. Therefore, the type of metamorphosis characteristic of chinch bugs aligns with the definition of incomplete metamorphosis.