Catalogue and illustrated key of Achelous De Haan, 1833 and Portunus Weber, 1795 (Brachyura: Portunidae: Portuninae) species occurring in Brazilian waters

Abstract The subfamily Portuninae includes about 130 species organized in 11 genera. The genera Portunus (Weber, 1795) and Achelous (De Haan, 1833) include about 80 species altogether. In Brazilian waters there are five known species of Achelous and four of Portunus. In the present contribution, a catalogue and illustrated key are provided for all Brazilian Achelous and Portunus species known to date.