Taxonomy of the South American species of Artonia (Lepidoptera: Hesperiidae), with descriptions of the final larval instars and pupa of Artonia artona

The two South American species of Artonia Grishin, 2019 are herein revised. A lectotype for Artonia artona (Hewitson, 1868) is designated. Larvae of Artonia artona were found feeding on an unidentified species of Poaceae Barnhart, and the final larval instars and pupa are described and illustrated for the first time. Detailed descriptions and a review of variation of the species are provided based on examination of a large number of specimens. Illustrations of the male and female genitalia and a distribution map for both species are provided.