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(Dana, 1852)

Zoea [Armases angustipes 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 [Armases angustipes]
¥ Number of stages in the megalopal phase: 1.
¥ Morphological characters of megalopa [Table 19 Mgp Pinnotheridae Grapsidae Gecarcinidae Ocypodidae]:
Rostrum short.
Carapace smooth.
Maxillule (mx1) endopod setation: 3, 4.
Maxilla (mx2) endopod setation: 0.
First maxilliped (mxp1) epipod setation: 7.
Third maxilliped (mxp3) epipod setation: 16.

Larval stages described by Kowalczuk, 1994.

Geographical distribution of adult
Occidental Atlantic: Mexico, The West Indies and Brazil (Ceará to Santa Catarina).

Depth range of adult
Salt marshes and mangrove.

Armases angustipes