Final larval or "preadult" stage; juvenile stage that resembles a miniature adult but is not sexually mature [Brusca and Brusca, 2002].
(Order Decapoda):
Last of basically five larval stages (nauplius, metanauplius, protozoea, zoea, postlarva). Characterized by initial appearance of adult characters and, in shrimplike (natantian) decopod, by pleopodal locomotion. According to group, this stage may be termed glaucothoe, grimothea, mastigopus, megalopa, nisto, parva, or pseudibaccus [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.