•The genus Hermilepidonotus Uschakov, 1974, and type species Lepidonotus robus tus Moore, 1905, are reviewed, and compared with the closely related Lepidonotus helotypus (Grube, 1877), based on examination of types and available new material. Under Lepidonotus helotypus (Grube, 1877), from China, Seidler (1924:56) included Lepidonotus robustus Moore, 1905, from the Gulf of Alaska. This was foll...