Ischnomesus Richardson, 1908

Ischnosoma Sars, 1866: 115 (type species: Ischnosoma bispinosum Sars, 1866) (preoccupied). Ischnomesus Richardson, 1908: 81 (replacement name).

Bactromesus Wolff, 1962: 83 (type species: Stylomesus gracilis Birstein, 1960).