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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: Heterotremata
Superfamilia: Xanthoidea

Familia: Trapeziidae
Subfamiliae: Calocarcininae - Quadrellinae - Trapeziinae
Overview of genera

Calocarcinus - Hexagonalia - Hexagonaloides - Philippicarcinus - Quadrella - Sphenomerides - Trapezia

Castro, P.; Ng, P.K.L.; Ahyong, S.T. 2004: Phylogeny and systematics of the Trapeziidae Miers, 1886 (Crustacea: Brachyura), with the description of a new family. Zootaxa, 643: 1–70. Abstract & excerpt
Komai, T.; Higashiji, T.; Castro, P. 2010: A new genus and new species of deep-water trapeziid crab (Crustacea: Decapoda: Brachyura: Trapezioidea) from the Ryukyu Islands, Japan. Zootaxa, 2555: 62–68. Preview
Ng, P.K.L.; Low, M.E.Y. 2010: On the generic nomenclature of nine brachyuran names, with four replacement names and two nomina protecta (Crustacea: Decapoda). Zootaxa, 2489: 34–46. Preview


Davie, P.; Türkay, M. (2009). Trapeziidae. Accessed through: World Register of Marine Species at on 2010-08-21

Trapeziidae is a family of crabs, commonly known as coral crabs. All the species in the family are found in a close symbiosis with cnidarians. They are found across the Indo-Pacific, and can best be identified to the species level by the colour patterns they display.[2] Members of the family Tetraliidae were previously included in the Trapeziidae, but the similarities between the taxa is the result of convergent evolution.[3]
Subfamilies and genera

The World Register of Marine Species lists the following subfamilies and genera:[1]

Calocarcininae Stevcic, 2005

Calocarcinus Calman, 1909
Philippicarcinus Garth & Kim, 1983
Sphenomerides Rathbun, 1897

Quadrellinae Stevcic, 2005

Hexagonalia Galil, 1986
Hexagonaloides Komai, Higashiji & Castro, 2010
Quadrella Dana, 1851

Trapeziinae Miers, 1886

Trapezia Latreille, 1828


Davie, Peter (2015). "Trapeziidae Miers, 1886". WoRMS. World Register of Marine Species. Retrieved 2015-07-04.
Peter Castro. "Trapeziid crabs (Brachyura : Xanthoidea : Trapeziidae) of New Caledonia, eastern Australia, and the Coral Sea". In B. Richer de Forges (ed.). Les fonds meubles des lagons de Nouvelle-CalMonie (Sédimentologie, Benthos) (PDF). Études & Thèses, volume 3. Paris: ORSTOM. pp. 59–107. ISBN 2-7099-1376-3.
Peter Castro, Peter K. L. Ng & Shane T. Ahyong (2004). "Phylogeny and systematics of the Trapeziidae Miers, 1886 (Crustacea: Brachyura), with the description of a new family" (PDF excerpt). Zootaxa. 643: 1–70. ISBN 1-877354-55-4.


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