genus

Mangrove Ghost Crabs

Ucides

Field notes

Ucides is a genus of mangrove crabs in the monotypic family Ucididae, containing two species:

Ucides cordatus (Linnaeus, 1763) – Atlantic coast from Florida to Uruguay

Ucides occidentalis (Ortmann, 1897) – Pacific coast from Mexico to Peru

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided