- First larval stage following the nauplius stage in euphausids, corresponding roughly to the the protozoea stage [Brusca and Brusca, 2002].Larval stage of euphausiids. There are three successive calyptopes, distinguished by the increasing degree of development of the abdomen [Mauchline, 1984].Third larval stage in euphausiaceans, characterized by differentiation of abdomen and appearance of compound eyes [Moore and McCormick, 1969].Third larval stage, characterized by differentiation of abdomen and appearance of compound eyes (Euphausiacea); see also zoea [McLaughlin, 1980].(Order Euphausiacea):
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.