Genus Cosmopterix Hübner, [1825] Cosmopterix Hübner, [1825]: 424. Type species: Tinea zieglerella Hübner, [1810], by subsequent designation by the International Commission on Zoological Nomenclature, 1969. Cosmopteryx Zeller, 1839: 210. Unjustified emendation of Cosmopterix Hübner, [1825]. Lienigia Spuler, 1910: 389. Type species: Cosmopteryx lienigiella Zeller, 1846, by monotypy. The genus is small-sized moths (forewing length 2.9–6.9 mm), with the characteristic wing shape, narrowing toward the apex. The main characteristics of the genus are bright, metallic forewings, colorful and shiny wings generally (Koster 2015).