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Not to be confused with Trapezidae.
Trapezia tigrina - Red Spotted Guard Crab.jpg
Trapezia tigrina
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Superfamily: Trapezioidea
Family: Trapeziidae
Miers, 1886 [1]
Type genus
Latreille, 1825

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[edit]

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

Calocarcininae Stevcic, 2005

Quadrellinae Stevcic, 2005

Trapeziinae Miers, 1886


  1. ^ a b Davie, Peter (2015). "Trapeziidae Miers, 1886". World Register of Marine Species. Retrieved 2015-07-04. 
  2. ^ Peter Castro. "Trapeziid crabs (Brachyura : Xanthoidea : Trapeziidae) of New Caledonia, eastern Australia, and the Coral Sea". In B. Richer de Forges. 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. 
  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. 

External links[edit]