Calappa (crab) explained

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.^[1]

Species

There are 43 extant species in the genus:^[2]

Extinct species

A further 18 species are known only from fossils.^{[3] [4]}

Fossils of species 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).

Notes and References

1. Web site: The Japanese Shame-Faced Crab . Creature Feature . . 5 July 2020.
2. . 2008 . 17 . 1–286 . Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world . P. K. L. Ng . D. Guinot . P. J. F. Davie . dead . https://web.archive.org/web/20110606061453/http://rmbr.nus.edu.sg/rbz/biblio/s17/s17rbz.pdf . 2011-06-06 .
3. . 2009 . Suppl. 21 . 1–109 . A classification of living and fossil genera of decapod crustaceans . Sammy De Grave . N. Dean Pentcheff . Shane T. Ahyong . etal . dead . https://web.archive.org/web/20110606064728/http://rmbr.nus.edu.sg/rbz/biblio/s21/s21rbz1-109.pdf . 2011-06-06 .
4. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=22346 Fossilworks