Pachygrapsus is a genus of small shore crabs. Recent genetic data suggest this genus to be possibly polyphyletic.It comprises the following species:Pachygrapsus corrugatus (von Martens, 1872)Pachygrapsus crassipes Randall, 1840Pachygrapsus fakaravensis Rathbun, 1907Pachygrapsus gracilis (Saussure, 1858)Pachygrapsus laevimanus Stimpson, 1858Pachygrapsus loveridgei Chace, 1966Pachygrapsus marmoratus (Fabricius, 1787)Pachygrapsus maurus (Lucas, 1846)Pachygrapsus minutus A.