Pachygrapsus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Crustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Eucarida
Ordo: Decapoda
Subordo: Pleocyemata
Infraordo: Brachyura
Sectio: Eubrachyura
Subsectio: Thoracotremata
Superfamilia: Grapsoidea

Familia: Grapsidae
Genus: Pachygrapsus
Species: P. corrugatus – P. crassipes – P. fakaravensis – P. gracilis – P. laevimanus – P. loveridgei – P. marmoratus – P. maurus – P. minutus – P. planifrons – P. plicatus – P. socius – P. transversus
Name

Pachygrapsus Randall, 1840
Type species: P. crassipes
Randall, 1840

References

Pachygrapsus – Taxon details on Integrated Taxonomic Information System (ITIS).
Ng, P.K.L.; Guinot, D.; Davie, P.J.F. 2008 Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world. Raffles Bulletin of Zoology 17: 1–286. Full paper

Vernacular names
English: shore crab
italiano: Granchio corridore

Pachygrapsus is a genus of small shore crabs. Recent genetic data suggest this genus to be possibly polyphyletic.[3]

It comprises the following species:[2]

Pachygrapsus corrugatus (von Martens, 1872)
Pachygrapsus crassipes Randall, 1840
Pachygrapsus fakaravensis Rathbun, 1907
Pachygrapsus gracilis (Saussure, 1858)
Pachygrapsus laevimanus Stimpson, 1858
Pachygrapsus loveridgei Chace, 1966
Pachygrapsus marmoratus (Fabricius, 1787)
Pachygrapsus maurus (Lucas, 1846)
Pachygrapsus minutus A. Milne-Edwards, 1873
Pachygrapsus planifrons De Man, 1888
Pachygrapsus plicatus (H. Milne-Edwards, 1837)
Pachygrapsus propinquus De Man, 1908
Pachygrapsus socius Stimpson, 1871
Pachygrapsus transversus (Gibbes, 1850)

References

"Pachygrapsus Randall 1839 (crab)". Fossilworks.org.
Peter K. L. Ng; Danièle Guinot & Peter J. F. Davie (2008). "Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world" (PDF). Raffles Bulletin of Zoology. 17: 1–286.
Christoph D. Schubart (2011). "Reconstruction of phylogenetic relationships within Grapsidae (Crustacea: Brachyura) and comparison of trans-isthmian versus amphi-atlantic gene flow based on mtDNA". Zoologischer Anzeiger. 250 (4): 472–478. doi:10.1016/j.jcz.2011.06.003.