The Grapsidae are a family of crabs known variously as marsh crabs, shore crabs, or talon crabs. The family has not been confirmed to form a monophyletic group and some taxa may belong in other families. They are found along the shore among rocks, in estuaries, marshes, and in some cases pelagic among drifting seaweeds and flotsam.
A number of taxa, formerly treated as subfamilies of the family Grapsidae are now considered families in their own right, including the Varunidae and Plagusiidae. Ten genera remain in the family, two of them known only from fossils:
- Geograpsus Stimpson, 1858
- Goniopsis De Haan, 1833
- Grapsus Lamarck, 1801
- Leptograpsodes Montgomery, 1931
- Leptograpsus H. Milne Edwards, 1853
- Litograpsus † Schweitzer & Karasawa, 2004
- Metopograpsus H. Milne Edwards, 1853
- Miograpsus † Fleming, 1981
- Pachygrapsus Randall, 1840
- Planes Bowdich, 1825
- "Grapsidae". Integrated Taxonomic Information System. Retrieved November 1, 2010.
- C. D. Schubart; S. Cannicci; M. Vannini; S. Fratini (2006). "Molecular phylogeny of grapsoid crabs (Decapoda, Brachyura) and allies based on two mitochondrial genes and a proposal for refraining from current superfamily classification" (PDF). Journal of Zoological Systematics and Evolutionary Research. 44 (3): 193–199. doi:10.1111/j.1439-0469.2006.00354.x. Archived from the original (PDF) on 2011-07-19.
- Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. (2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on 2011-06-06.
- Media related to Grapsidae at Wikimedia Commons