Alidus signatus Pic, 1926 is transferred from Mispila to Souvanna , and Souvanna signata (Pic, 1926), comb. nov. is proposed. The lectotype of Alidus signatus is designated. The following synonyms are proposed: Souvanna signata = Athylia ( s. str.) quadristigma (Gressitt, 1940), syn. nov. = Souvanna phoumai Breuning, 1963, syn. nov. = Mispila ( Dryusa) coomani Breuning, 1968, syn. nov., Mispila ( s. str.) tenuevittata (Pic, 1930) = Mispila ( s. str.) assamensis Breuning, 1938, syn. nov. The gender of the holotype of Alidus multilineatus Pic, 1925 is determined. New distributional records for Souvanna signata , Mispila curvilinea Pascoe, 1869, M. subtonkinea Breuning, 1968 and M. tenuevittata are provided.