Wandering spiders (Ctenidae) are a family of spiders that includes the Brazilian wandering spiders. These spiders have a distinctive longitudinal groove on the top-rear of their oval carapace similar to those of the Amaurobiidae. They are highly defensive and venomous nocturnal hunters. Wandering spiders are known to hunt large prey, for example hylid species Dendropsophus branneri. Despite their notoriety for being dangerous, only a few members of Phoneutria have venom known to be hazardous to humans, but the venoms of this family are poorly known, so all larger ctenids should be treated with caution. Genera , the World Spider Catalog accepts the following genera: Acantheis Thorell, 1891 — Asia Acanthoctenus Keyserling, 1877 — South America, Central America, Jamaica, Mexico Africactenus Hyatt, 1954 — Africa, India Afroneutria Polotow & Jocqué, 2015 — Africa Amauropelma Raven, Stumkat & Gray, 2001 — Asia, Australia Amicactenus Henrard & Jocqué, 2017 — Africa Anahita Karsch, 1879 — Africa, Asia, United States Ancylometes Bertkau, 1880 — South America, Honduras Apolania Simon, 1898 — Seychelles Arctenus Polotow & Jocqué, 2014 — Kenya Asthenoctenus Simon, 1897 — South America Bengalla Gray & Thompson, 2001 — Australia Bulboctenus Pereira, Labarque & Polotow, 2020 — Brazil Califorctenus Jiménez, Berrian, Polotow & Palacios-Cardiel, 2017 Caloctenus Keyserling, 1877 — Ethiopia, South America Celaetycheus Simon, 1897 — Brazil Centroctenus Mello-Leitão, 1929 — South America Chococtenus Dupérré, 2015 — Ecuador, Colombia Ciba Bloom, Binford, Esposito, Alayón, Peterson, Nishida, Loubet-Senear & Agnarsson, 2014 — Cuba, Dominican Republic Ctenus Walckenaer, 1805 — Africa, South America, Oceania, Central America, Asia, North America, Caribbean Diallomus Simon, 1897 — Sri Lanka Enoploctenus Simon, 1897 — South America, Saint Vincent and the Grenadines Gephyroctenus Mello-Leitão, 1936 — Brazil, Peru Isoctenus Bertkau, 1880 — Brazil, Argentina Janusia Gray, 1973 — Australia Kiekie Polotow & Brescovit, 2018 — Colombia, Central America, Mexico Leptoctenus L. Koch, 1878 — Australia, North America, Panama Macroctenus Henrard & Jocqué, 2017 — Guinea Mahafalytenus Silva-Dávila, 2007 — Madagascar Montescueia Carcavallo & Martínez, 1961 — Argentina Nimbanahita Henrard & Jocqué, 2017 — Guinea Nothroctenus Badcock, 1932 — Brazil, Bolivia, Paraguay Ohvida Polotow & Brescovit, 2009 — Cuba Parabatinga Polotow & Brescovit, 2009 — South America Perictenus Henrard & Jocqué, 2017 — Guinea Petaloctenus Jocqué & Steyn, 1997 — Africa Phoneutria Perty, 1833 — South America Phymatoctenus Simon, 1897 — Brazil, Guyana, Costa Rica Piloctenus Henrard & Jocqué, 2017 — Guinea, Togo, Ivory Coast Sinoctenus Marusik, Zhang & Omelko,