Platynopus Amyot & Serville, 1843: xx, 79. Type species by monotypy: Platynopus varius Amyot & Serville, 1843 (= Aelia melanoleuca Westwood, 1837).
Platypus Marshall, 1868: 281 (junior homonym of Platypus Herbst, 1793, Coleoptera). Unjustified emendation.