Calappa (crab)

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Temporal range: Paleogene - Recent
Calappa hepatica
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Calappidae
Genus: Calappa
Weber, 1795 [1]

41 extant species: see text

Calappa is a genus of crabs known commonly as box crabs or shame-faced crabs. The name box crab comes from their distinctly bulky carapace, and the name shame-faced is from anthropomorphising the way the crab's chelae (claws) fold up and cover its face, as if it were hiding its face in shame.[2]


There are 43 extant species in the genus:[3]

Extinct species[edit]

A further 18 species are known only from fossils.[4][5]

Fossil of Calappa species

Fossils of within this genus can be found in sediment of Europe, United States, Mexico, Central America, Australia and Japan from Paleogene to recent (age range: 33.9 to 0.0 Ma).


  1. ^ "Calappa Weber, 1795". Integrated Taxonomic Information System. Retrieved August 21, 2011.
  2. ^ "The Japanese Shame-Faced Crab". Creature Feature. Western Australian Museum. Retrieved 5 July 2020.
  3. ^ P. K. L. Ng; D. Guinot; P. 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. Archived from the original (PDF) on 2011-06-06.
  4. ^ 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.
  5. ^ Fossilworks

External links[edit]

  • Media related to Calappa at Wikimedia Commons