- Free-swimming larval stage, after nauplius, characteristic of penaeidean and some caridean shrimps [Butler, T.H.].Larval stage in ontogeny of some decapods preceding zoea stage [Moore and McCormick, 1969].The second in a series of free-swimming larval stages of a penaeid shrimp [Bliss, 1982].(Order Decapoda):Third of basically five larval stages (nauplius, metanauplius, protozoea, zoea, postlarva). Applied to shrimp-like (natantian) decapod and characterized by antennal locomotion. May be subdivided into several substages. Protozoea of certain forms termed elaphocaris [Stachowitsch, 1992].(Order Euphausiacea):First two or three postnaupliar substages in development of Penaeiodea and Euphausiacea [McLaughlin, 1980].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.