Xanthidae is a family of crabs known as gorilla crabs, mud crabs, pebble crabs or rubble crabs. 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.
- Actaeinae
- Actaea
- Actaeodes
- Actaeops †
- Allactaea
- Eoxanthops †
- Epiactaea
- Epiactaeodes
- Forestiana
- Gaillardiellus
- Heteractaea
- Lambropsis †
- Lobiactaea
- Meractaea
- Novactaea
- Odhnea
- Paractaea
- Paractaeopsis
- Phlyctenodes †
- Platyactaea
- Pseudoliomera
- Pseudophlyctenodes †
- Rata
- Serenius
- Banareiinae
- Banareia
- Calvactaea
- Pseudactaea
- Trichia
- Chlorodiellinae
- Chlorodiella
- Cyclodius
- Liocarpilodes
- Luniella
- Pilodius
- Ratha
- Soliella
- Sulcodius
- Tweedieia
- Vellodius
- Cymoinae
- Cymo
- Etisinae
- Etisus
- Paraetisus
- Euxanthinae
- Alainodaeus
- Batodaeus
- Carpoporus
- Cranaothus
- Crosnierius
- Danielea
- Edwardsium
- Epistocavea
- Euxanthus
- Gothus
- Guinotellus
- Hepatoporus
- Hypocolpus
- Jacforus
- Ladomedaeus
- Lipaesthesius
- Lipkemedaeus
- Medaeops
- Medaeus
- Miersiella
- Monodaeus
- Olenothus
- Palatigum
- Paramedaeus
- Paraxanthodes
- Pilomedaeus
- Pleurocolpus
- Psaumis
- Rizalthus
- Takedax
- Visayax
- Glyptoxanthinae
- Glyptoxanthus
- Kraussiinae
- Garthasia
- Kraussia
- Palapedia
- Liomerinae
- Actiomera
- Bruciana
- Liomera
- Lipkemera
- Neoliomera
- Neomeria †
- Paraliomera
- Polydectinae
- Lybia
- Polydectus
- Tunebia
- Xanthinae
- Aldrovandiopanope
- Aristotelopanope
- Bottoxanthodes
- Camilohelleria
- Cataleptodius
- Coralliope
- Cycloxanthops
- Demania
- Epixanthops
- Eurycassiope
- Euryxanthops
- Gaudichaudia
- Guitonia
- Juxtaxanthias
- Lachnopodus
- Leptodius
- Liagore
- Lioxanthodes
- Macromedaeus
- Marratha
- Megametope
- Megamia †
- Metaxanthops
- Metopoxantho †
- Neolioxantho
- Neoxanthias
- Neoxanthops
- Orphnoxanthus
- Ovatis
- Palaeoxanthops †
- Paraxanthias
- Paraxanthus
- Pestoxanthodes
- Pseudomedaeus
- Wardoxanthops
- Williamstimpsonia
- Xanthias
- Xantho
- Xanthodius
- Zosiminae
- Atergatis
- Atergatopsis
- Lophozozymus
- Paratergatis
- Platypodia
- Platypodiella
- Pulcratis
- Zosimus
- Zozymodes
- Incertae sedis
- Haydnella †
- Nogarolia †
- Sculptoplax †