Udara aristinus is a butterfly in the family Lycaenidae. It was described by Hans Fruhstorfer in 1917. It is found in the Indomalayan realm, where it has been recorded from Malaysia and Java.
^ Fruhstorfer, H., 1917. Revision der Lycaenidengattung Lycaenopsis. Archiv für Naturgeschichte. 82 (A) (1) (1916): 1–42, 2 pls.
^ Seitz, A., 1912-1927. Die Indo-Australien Tagfalter. Theclinae, Poritiinae, Hesperiidae. Grossschmetterlinge Erde 9: 799-1107, pls. 138-175.