Pachygrapsus is a genus of small shore crabs. Recent genetic data suggest this genus to be possibly polyphyletic. It comprises the following species: \n* Pachygrapsus corrugatus (von Martens, 1872) \n* Pachygrapsus crassipes Randall, 1840 \n* Pachygrapsus fakaravensis Rathbun, 1907 \n* Pachygrapsus gracilis (Saussure, 1858) \n* Pachygrapsus laevimanus Stimpson, 1858 \n* Pachygrapsus loveridgei Chace, 1966 \n* Pachygrapsus marmoratus (Fabricius, 1787) \n* Pachygrapsus maurus (Lucas, 1846) \n* Pachygrapsus minutus A. Milne-Edwards, 1873 \n* Pachygrapsus planifrons De Man, 1888 \n* Pachygrapsus plicatus (H. Milne-Edwards, 1837) \n* Pachygrapsus propinquus De Man, 1908 \n* Pachygrapsus socius Stimpson, 1871 \n* Pachygrapsus transversus (Gibbes, 1850)