Table 1 in A review of primary freshwater crab mandible morphology: terminology and systematic importance (Crustacea: Decapoda: Brachyura)

Table 1. Current descriptions of the characters of the mandible of the seven freshwater crab families.
Freshwater crab familyBiting jaw of mandibleNumber of parts of mandibular palpMandibular palp terminal segment/articlePotamidaeCoxa‘3-segments’/articlesSimple (all but one species)/bilobed (one species)TrichodactylidaeCoxa‘3-segments’/articlesSimple (all species)PseudothelphusidaeCoxa‘2-segments’/articlesBilobed (all species)GecarcinucidaeCoxa‘2-segments’/articlesBilobed (all species)PotamonautidaeCoxa‘2-segments’/articlesSimple/ridgedDeckeniidaeCoxa‘2-segments’/articlesBilobed/ridged/simpleEpiloboceridaeCoxa‘2-segments’/articlesBilobed (all species)