Gecarcinus quadratus

"Halloween crab" and "Halloween moon crab" redirect here. For the species of hermit crab, see Halloween hermit crab.

Gecarcinus quadratus
On Parida Island, Panama
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Gecarcinidae
Genus: Gecarcinus
Species:
G. quadratus
Binomial name
Gecarcinus quadratus

Gecarcinus quadratus, known as the red land crab,[1] whitespot crab,[1] Halloween crab,[2] moon crab, Halloween moon crab, mouthless crab,[2] or harlequin land crab,[2] is a colourful land crab from the family Gecarcinidae.

Distribution

Gecarcinus quadratus is found in mangroves, sand dunes, and rainforests along the Pacific coast from Mexico south to Panama.[3][4] Previously it has also been reported from the Pacific coast of northwestern South America,[3] but in 2014 this population was recognized as a separate species, G. nobili.[4]

The taxonomy in relation to the Atlantic G. lateralis is disputed, with many considering G. quadratus and G. lateralis to be conspecific.[4][5]

Description

Gecarcinus quadratus in Panama

The carapace of G. quadratus may reach a length of 5 cm (2.0 in). It has a pair of largely purple claws, red-orange legs, and an almost entirely black carapace with a pair of yellow, orange, purple or reddish spots behind the eyes, and an additional pair of whitish spots on the central-lower carapace.[2][4]

Behaviour

This nocturnal crab digs burrows—sometimes as long as 1.5 m (4.9 ft)[5]—in the coastal rainforests of Mexico and Central America, and is common along the coasts of Mexico, Costa Rica, Panama, and Nicaragua. It lives in the forest for at least some of its adult life, but needs to return to the ocean to breed.[2] It is largely herbivorous and consumes leaf litter and seedlings.[5]

References

  1. ^ a b Donald B. Bright & Charles L. Hogue (1972). "A synopsis of burrowing land crabs of the World and list of their arthropod symbionts and burrow associates" (PDF). Contributions in Science. 220. Archived from the original (PDF) on 2010-10-09.
  2. ^ a b c d e T. Beth Kinsey. "Halloween Crab". The Firefly Forest. Retrieved July 28, 2011.
  3. ^ a b Lawrence G. Abele, Michael H. Robinson & Barbara Robinson (1973). "Observations on sound productions by two species of crabs from Panama (Decapoda, Gecarcinidae and Pseudothelphusidae)" (PDF). Crustaceana. 25 (2): 147–152. doi:10.1163/156854073X00795.
  4. ^ a b c d Robert Perger & Adam Wall (2014). "The description of a new species of the Neotropical land crab genus Gecarcinus Leach, 1814 (Crustacea, Decapoda, Brachyura, Gecarcinidae)". ZooKeys (435): 93–109. Bibcode:2014ZooK..435...93P. doi:10.3897/zookeys.435.7271. PMC 4141188. PMID 25152688.
  5. ^ a b c Peter M. Sherman (2006). "Influence of land crabs Gecarcinus quadratus (Gecarcinidae) on distributions of organic carbon and roots in a Costa Rican rain forest". Revista de Biología Tropical. 54 (1): 149–161. PMID 18457184.

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