Twelve oriental mesosine species which had been belonged to the nominotypical subgenus of the genus Mesosa Latreille, 1829, are transferred to the subgenus Dissosira Pascoe, 1865 of the genus Agelasta Newman, 1842, as follows: A. (D.) perplexa (Pascoe, 1858); A. (D.) columba (Pascoe, 1859); A. (D.) rufa (Breuning, 1935); A. (D.) catenatoides Yamasako and N. Ohbayashi, nom. nov. [replacement name for A. (D.) laosensis (Breuning, 1935) already occupied by Pic (1925)]; A. (D.) gardneri (Breuning, 1938); A. (D.) nigropunctata (Breuning, 1938); A. (D.) konoi (Hayashi, 1956); A. (D.) yonaguni (Hayashi, 1962); A. (D.) nigrostictica (Breuning, 1967); A. (D.) siamana (Breuning, 1974); A. (D.) praelongipes (Kusama and Irie, 1976); A. (D.) kumei (Takakuwa, 1991).