Developmental Cycle

The complex biological process through which all living organisms go in order to complete their life cycle. Macro invertebrates complete their transformation from egg to adult employing two separate strategies; namely incomplete (egg - nymph - adult = mayflies and stone flies) or complete metamorphosis (egg - larva - pupa - adult = caddis flies and all diptera).

Links
  http://www.epa.gov/bioindicators/html/lifecycle.html