(H. Milne Edwards, 1837)
Zoea [Aratus pisonii 1]
¥ Number of stages in the zoeal phase: 4.
¥ Morphological characters of first zoea [Table 9 First zoeae of Grapsidae]:
Antennal endopod half the length of antennal protopod.
Carapace without lateral spines.
Maxilla (mx2) endopod setation: 2, 3.
First maxilliped (mxp1) basipod setation: 2, 2, 3, 3.
First maxilliped (mxp1) endopod setation: 2, 2, 1, 2, 5.
Megalopa [Aratus pisonii]
¥ Number of stages in the megalopal phase: 1.
¥ Morphological characters of megalopa [Table 19 Mgp Pinnotheridae Grapsidae Gecarcinidae Ocypodidae]:
Rostrum absent.
Carapace with dorsal spine.
Maxillule (mx1) endopod setation: 1, 5.
Maxilla (mx2) endopod setation: 5.
No information about the setation of the First maxilliped (mxp1) epipod.
No information about the setation of the third maxilliped (mxp3) epipod.
Larval stages described by Warner, 1968; Díaz and Bevilacqua, 1987.
Geographical distribution of adult
Occidental Atlantic: Florida, Gulf of Mexico, The West Indies, northern South America, Guianas and Brazil (Piauí to So Paulo)
Oriental Pacific: Nicaragua to Peru, Chile.
Depth range of adult
Salt marshes and mangrove.