The genus Altica Geoffroy, 1762, is revised for Australia, the west Pacific region and the Indomalayan Archipelago, with 6 valid species: A. aenea (Olivier, 1808); A. birmanensis (Jacoby, 1896); A. caerulea (Olivier, 1791); A. corrusca (Erichson, 1842); A. cyanea Weber, 1801; A. gravida (Blackburn, 1896). The following new synonymy is recognised, in original combinations, senior synonym first: Galeruca aenea Olivier = Haltica ignea Blackburn, 1889, syn. nov., = Haltica bicolora Jacoby, 1904, syn. nov., = Altica jussiaeae Gressitt, 1955, syn. nov.; Galeruca caerulea Olivier = Haltica elongata Jacoby, 1884, syn. nov., = Altica brevicosta Weise, 1922; Haltica corrusca Erichson = Haltica pagana Blackburn, 1896, syn. nov.; Haltica birmanensis Jacoby = Haltica indica Shukla,