EN
Taiwanocryphaeus erberi sp. nov. (Tenebrionidae: Toxicini), Tonkinius triplehorni sp. nov. (Tenebrionidae: Coelometopini) and Derosphaerus matthewsi sp. nov. (Tenebrionidae: Coelometopini), all from Sumatra, are described. It is discussed, why these taxa are not described as new genera, in spite of quite outstanding characters within the corresponding genera.