Xanthidae is a family of crabs known as gorilla crabs, mud crabs, pebble crabs or rubble crabs. Xanthid crabs are often brightly coloured and are highly poisonous, containing toxins which are not destroyed by cooking and for which no antidote is known. The toxins are similar to the tetrodotoxin and saxitoxin produced by puffer fish, and may be produced by bacteria in the genus Vibrio living in symbiosis with the crabs, mostly V. alginolyticus and V. parahaemolyticus.
Lybia is a genus of small crabs in the family Xanthidae. Their common names include boxer crabs, boxing crabs and pom-pom crabs. They are notable for their mutualism with sea anemones, which they hold in their claws for defense. In return, the anemones get carried around, which may enable them to capture more food particles with their tentacles. Boxer crabs use at least three species of anemones, including Bundeopsis spp. and Triactis producta. The bonding with the anemone is not needed for survival, however, and boxer crabs have frequently been known to live without them, sometimes substituting other organisms such as sponges and corals for the sea anemones.
Epiactaea is a genus of crabs in the family Xanthidae, containing the following species:
Paractaea is a genus of crabs in the family Xanthidae, containing the following species:
Euxanthus is a genus of crabs in the family Xanthidae.
Goatman is a genus of crabs in the family Xanthidae, containing the following species:
Liomera is a genus of crabs in the family Xanthidae, containing the following species:
Heteractaea is a genus of crabs in the family Xanthidae, containing the following species:
Odhneria is a genus of crabs in the family Xanthidae, containing the following species:
Pseudactaea is a genus of crabs in the family Xanthidae, containing the following species:
Serenius is a genus of crabs in the family Xanthidae, containing the following species:
Crosnierius is a genus of crabs in the family Xanthidae, containing the following species:
Glyptoxanthus is a genus of crabs in the family Xanthidae, containing eight species. It was originally erected by Alphonse Milne-Edwards in 1879 for six species previously placed in the genus Actaea and elsewhere. Although previously included in subfamily Euxanthinae, the genus has a quite distinct morphology from other genera in that group, and was placed in 2011 in the new, monotypic subfamily, Glyptoxanthinae by Jose Christopher Mendoza and Danièle Guinot.
Actiomera is a genus of crabs in the family Xanthidae, containing the following species:
Euryxanthops is a genus of crabs in the family Xanthidae. It was originally established in 1983 by Garth & Kim to contain three species of deep-water crabs from Japan and the Philippines - Euryxanthops dorsiconvexus, Euryxanthops flexidentatus and Euryxanthops orientalis. Since then, several more species of this genus have been identified and described, and Euryxanthops currently contains:
Marratha angusta is a species of crabs in the family Xanthidae, the only species in the genus Marratha. It was originally described as Cycloxanthops angustus by Mary J. Rathbun in 1906, but was moved to a new genus in 2003; the name of the genus, Marratha, is an "arbitrary abbreviation" of Rathbun's name. It has been recorded from the Amirante Islands (Seychelles), Hawaii and the South China Sea.
Micropanope is a genus of crabs in the family Xanthidae, containing one exclusively fossil species and the following species:
Neoxanthias is a genus of crabs in the family Xanthidae, containing the following species:
Lophozozymus is a genus of crabs in the family Xanthidae, containing the following species:
Mathildellidae is family of crabs belonging to the superfamily Goneplacoidea, containing the following genera:
