Jewel-box Pea Crab
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''Gemmotheres'' also known as the jewel-box pea crab, is a
monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...
genus of
pea crab The pea crab, ''Pinnotheres pisum'', is a small crab in the family Pinnotheridae that lives as a parasite in oysters, clams, mussels, and other species of bivalves. Etymology ''Pinnotheres'' is Greek for "guard of '' Pinna''" and ''pisum'' i ...
, which was erected in 1996 to hold the species ''Gemmotheres chamae'' (formerly ''Pinnotheres chamae''). The species lives as a
commensal Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism, in which both organisms benefit f ...
of the corrugate jewelbox, '' Chama congregata''.


References

Pinnotheroidea Crabs of the Atlantic Ocean Monotypic decapod genera {{Eubrachyura-stub