There are currently over 1,400 species of primary freshwater crabs assigned to five families: Trichodactylidae
(48 species), Pseudothelphusidae (271 species), Potamo-nautidae (152 species), Potamidae (551 species), and Gecarcinucidae (372 species) (Cumberlidge, 2016).
They are composed of five families; Pseudothelphusidae Ortmann, 1893 (Neotropics; Wehrtmann et al., 2010) and Trichodactylidae
The smallest brachyuran species reported was Trichodactylus borellianus (Nobili, 1896) from the family Trichodactylidae
, with a [CW.sub.max] of 10.4 mm in males (n = 155) and 12.4 mm in females (n = 182).
Freshwater crabs are represented in Brazil by two families (Pseudothelphusidae and Trichodactylidae
) comprising at least 50 species, most of them belonging to Trichodactylidae
(Cumberlidge et al., 2014).
Behavioral repertory of Trichodactylus panoplus (Crustacea: Trichodactylidae
) under laboratory conditions.
Analise comparativa entre a fecundidade de Dilocarcinus pagei Stimpsone Sylviocarcinus australis Magalhaes & Turkay (Crustacea, Decapoda, Trichodactylidae
) no Pantanal do Rio Paraguai, Porto Murtinho, Mato Groso do Sul.
Taxonomy of the neotropical freshwater crab family Trichodactylidae
. The generic system with description of some new genera (Crustacea: Decapoda: Brachyura); Senckenbergiana Biologica, 75(1/2): 63-95.
Probably, only large terrestrial ctenid and theraphosid spiders present in the cave prey on adult Belostoma (Horstkotte et al., 2010); however, small nymphs are small enough to be eaten by larger cavefish and freshwater crabs (Avotrichodactylus bidens Bott 1969, Trichodactylidae
. Office de la Recherche Scientifique d'Outre Mer (ORSTOM).