Halictus alphenum Cameron 1897, Mem. Manchester Sot., 41 (4): 108 [male, Mussouri, type in Oxford]; Bliithgen, 1930, Mitt. deutsch. entom. Gesell., 73 (= H. ceylonicus Cameron, 1902); 1931, Zool. Jb. Syst., 61: 301.
Halictus ceylonicus Cameron, 1902, Ann. Mag. Nat. Hist., 9 (7): 253 [female, Ceylon, type in Oxford].
Ceylonicola submicans Friese, 19 18, 2001. Jb. Syst., 41: 504 [male, Ceylon, type in Berlin]; Bliithgen, 1926, Zool. Jb. Syst., 51: 546 (= H. ceylonicus, Cameron, 1902, net 1898, cf. L. (S.) bidentatum p. 17.5).