New records are provided for thirteen species of Isotes Weise, 1922: I. atriventris (Jacoby, 1880), I. bertonii(Bowditch, 1912), I. borrei (Baly, 1889), I. brasiliensis (Jacoby, 1888), I. cribrata (Gahan, 1891), I. dilatata (Jacoby, 1887), I. figurata (Jacoby, 1887), I. multipunctata (Jacoby, 1878), I. puella (Baly, 1886), I. sanguineipennis (Baly, 1891), I. uniformis (Jacoby, 1887), I. varipes (Boheman, 1859), and I. vittula (Bowditch, 1911). Updates in relation to the latest catalogue are presented for nine species, and new information at state, province, or region level is provided for 35 species.