Number of larval stages in each phase for different groups of decapod Crustacea (modified from Wil-
liamson, 1982).
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Group Nauplius Proto- Mysis Zoea Phyllo- “Eryo- Decapodid
zoea soma neicus”
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DENDRO-
BRANCHIATA
Penaeoidea 5, 6 (8) 3 2-5 - - - few
Sergestoidea 2 3 2 - - - many

PLEOCYEMATA
Stenopodidea - - - 1-9 - - 1
Caridea - - - many - - 1 (2, 3)
Scyllaridae &
Palinuridae - - - - 6-15 - 1 (puerulus)
Nephropidae &
Polychelidae - - - - - 3 1
Thalassinidea - - 2-many - - 1
Anomura - - - 2-many - - 1 (glaucothöe)
Brachyura - - - 2-many - - 1-2 (megalopa),
mostly 1
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