# Grapsoidea
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> Markdown URL: https://mediated.wiki/source/Grapsoidea.md
> Source: https://en.wikipedia.org/wiki/Grapsoidea
> Source revision: 1344886487
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{{Short description|Superfamily of crabs}}
{{Automatic taxobox
| image = Hemigrapsus_nudus_3043.JPG
| image_caption = [Purple shore crab](/source/Purple_shore_crab) (''Hemigrapsus nudus'': [Varunidae](/source/Varunidae))
| display_parents = 4
| taxon = Grapsoidea
| authority = [Macleay](/source/William_Sharp_Macleay), 1838
| subdivision_ranks = Families [{{cite journal|journal=[Raffles Bulletin of Zoology](/source/Raffles_Bulletin_of_Zoology) |date=2009 |volume=Suppl. 21 |pages=1–109 |title=A classification of living and fossil genera of decapod crustaceans |author1=Sammy De Grave |author2=N. Dean Pentcheff |author3=Shane T. Ahyong |url=http://rmbr.nus.edu.sg/rbz/biblio/s21/s21rbz1-109.pdf |display-authors=etal |url-status=dead |archiveurl=https://web.archive.org/web/20110606064728/http://rmbr.nus.edu.sg/rbz/biblio/s21/s21rbz1-109.pdf |archivedate=2011-06-06 }}]
| subdivision =
*[Gecarcinidae](/source/Gecarcinidae)
*[Glyptograpsidae](/source/Glyptograpsidae)
*[Grapsidae](/source/Grapsidae)
*[Percnidae](/source/Percnidae)
*[Plagusiidae](/source/Plagusiidae)
*[Sesarmidae](/source/Sesarmidae)
*[Varunidae](/source/Varunidae)
*[Xenograpsidae](/source/Xenograpsidae)
| synonyms =
See text
}}
The '''Grapsoidea''' are a [superfamily](/source/Taxonomic_rank) of [crab](/source/crab)s; they are well known and contain many [taxa](/source/taxa) which are terrestrial (land-living), semiterrestrial (taking to the sea only for reproduction), or limnic (living in [fresh water](/source/fresh_water)). Another well-known member with a more conventional lifestyle is the [Chinese mitten crab](/source/Chinese_mitten_crab), ''Eriocheir sinensis''.
The delimitation of the [Grapsidae](/source/Grapsidae) and [Plagusiidae](/source/Plagusiidae) is in need of revision; the latter at least is not [monophyletic](/source/monophyletic). The same apparently holds true for several [genera](/source/genera) in the [Sesarmidae](/source/Sesarmidae).[{{cite journal |author1=Christoph D. Schubart |author2=José A. Cuesta |author3=Darryl L. Felder |date=2002 |title=Glyptograpsidae, a new brachyuran family from Central America: larval and adult morphology, and a molecular phylogeny of the Grapsoidea |journal=[Journal of Crustacean Biology](/source/Journal_of_Crustacean_Biology) |volume=22 |issue=1 |pages=28–44 |doi=10.1651/0278-0372(2002)022[0028:GANBFF]2.0.CO;2 |s2cid=53346169 |url=http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1651%2F0278-0372(2002)022%5B0028%3AGANBFF%5D2.0.CO%3B2|url-access=subscription }}][{{cite journal |author1=Christoph D. Schubart |author2=Hung-Chang Liu |author3=José A. Cuesta |date=2003 |title=A new genus and species of tree-climbing crab (Crustacea: Brachyura: Sesarmidae) from Taiwan with notes on its ecology and larval morphology |journal=[Raffles Bulletin of Zoology](/source/Raffles_Bulletin_of_Zoology) |volume=51 |issue=1 |pages=49–59 |url=http://rmbr.nus.edu.sg/rbz/biblio/51/51rbz049-059.pdf |access-date=2008-01-20 |archive-date=2012-02-06 |archive-url=https://web.archive.org/web/20120206205011/http://rmbr.nus.edu.sg/rbz/biblio/51/51rbz049-059.pdf |url-status=dead }}][{{cite journal |author1=Christoph D. Schubart |author2=S. Cannicci |author3=M. Vannini |author4=S. Fratini |date=2006 |title=Molecular phylogeny of grapsoid crabs (Decapoda, Brachyura) and allies based on two mitochondrial genes and a proposal for refraining from current superfamily classification |journal=[Journal of Zoological Systematics and Evolutionary Research](/source/Journal_of_Zoological_Systematics_and_Evolutionary_Research) |volume=44 |issue=3 |pages=193–199 |doi=10.1111/j.1439-0469.2006.00354.x}}]
The closest living relatives of the Grapsoidea are the [Ocypodoidea](/source/Ocypodoidea). In fact, they seem to be [paraphyletic](/source/paraphyletic) with respect to each other and it seems warranted to merge the Ocypodoidea into the Grapsoidea.