(Dana, 1851)
Zoea [Acanthonyx scutiformis 1]
¥ Number of stages in the zoeal phase: 2.
¥ Morphological characters of first zoea [Table 6 First zoeae of Majidae]:
Carapace with one rostral and one dorsal spine.
Abdominal somite 2 with, and somite 3 without, dorsolateral projections.
Abdominal somites without postero-lateral processes.
Number of marginal and apical setae on scaphognathite: 11 and 1.
Megalopa [Acanthonyx scutiformis]
¥ Number of stages in the megalopal phase: 1.
¥ Morphological characters of megalopa [Table 17 Mgp Majidae Parthenopidae]:
Rostrum deflected ventrally.
Carapace smooth.
Maxillule (mx1) endopod setation: 1, 1.
Maxilla (mx2) endopod setation: 0.
First maxilliped (mxp1) epipod setation: 6.
Third maxilliped (mxp3) epipod setation: 3.
Larval stages described by Hiyodo et al., 1994.
Geographical distribution of adult
Occidental Atlantic: Brazil (Espírito Santo to So Paulo).
Depth range of adult
Intertidal zone.