The period of activity may come on earlier or later in life; but whenever it comes on, the adaptation of the larva to its conditions of life is just as perfect and as beautiful as in the adult animal.
Aktibotasun-aldi hori goizago edo beranduxeago has daiteke, baina behin hasiz gero, animalia helduarengan bezain zehatz eta ederra gertatzen da larbak bere bizi-baldintzekiko duen egokitzapena.