is the type genus
of the land crab
. They are found in warmer coastal regions of the Americas
, and islands in the East Pacific
and Atlantic Ocean
. It has been suggested that Johngarthia
, which are restricted to small islands, should be considered a distinct genus
rather than a subgenus. Additionally, it has been suggested that G. lateralis
and G. quadratus
should be considered conspecific
, while G. lagostoma
and G. weileri
were considered conspecific until 1973. While all members of this genus are largely terrestrial
, they have to return to the ocean to breed (the larvae
are released into the sea). They are often colourful, with reddish, orange, purple, yellowish, whitish or blackish being the dominating hues. This has resulted in some species, notably G. quadratus
and G. lateralis
, gaining a level of popularity in the pet-trade.
- Subgenus Gecarcinus:
- Subgenus Johngarthia (sometimes considered a genus):
- Bright, D., & C. Hogue. 1972. A synopsis of burrowing land crabs of the World and list of their arthropod symbionts and burrow associates. Contributions in Science. No. 220. Available online (PDF)
- Ng, P., & D. Guinot, 2001. On the land crabs of the genus Discoplax A. Milne Edwards, 1867 (Crustacea: Decapoda: Brachyura: Gecarcinidae), with description of a new cavernicolous species from the Philippines. Raffles Bull. Zool. 49: 311-338.
- Türkay, M. 1970. Die Gercarcinidae Amerikas. Mit einem Anhang uber Ucides Rathbun (Crustacea: Decapoda). Senckenberg. biol. 51: 333-354.
- Türkay, M. 1973. Die Gercarcinidae Afrikas. Senckenberg. biol. 54: 81-103.
- Türkay, M. 1987. Landkrabben. Natur Mus. 117: 143-150.