SIEWERT, R. R.; LEMES, J. R. A.; MIELKE, O. H. H.; CASAGRANDE, M. M. Viuria Grishin, 2019 (Lepidoptera: Hesperiidae): taxonomy, description of two new species, and remarks on the morphology of secondary sexual organs of males. European Journal of Taxonomy, v. 908, n. 1, p. 183–203, 27 Nov. 2023.