larval stage nauplius caterpillar DpseDv:0000003 ammocoete stage larva stage nymph stage grub wriggler stage bipinnaria stage veliger stage maggot stage planula stage EFO:0001303 tornaria naiad, nymph A distinct juvenile stage many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. naiad, nymph stage BTO:0000954 Wikipedia:Larva glochidium DsimDv:0000003 ZFS:0000048 BTO:0000915 zoea stage maggot leptocephalus stage planula wriggler glochidium stage veliger trochophore nauplius stage metacestode zoea OGES:000008 ammocoete grub stage MIAA:0000400 bipinnaria trochophore stage nymph leptocephalus caterpillar stage SsalDv:0000039 life cycle stage