A new trasandean species of the genus Tigridania Kaye, 1918 (Lepidoptera: Erebidae: Arctiinae: Arctiini: Euchromiina) from Colombia.

During curatorial work at the Entomological Collection of the Universidad de Antioquia (Medellín, Colombia), we discovered a recently collected pair of Euchromiina in copula (Fig. 1B) in the department of Antioquia, Colombia (Fig. 1A). It was a large and robust species, with translucent wings and a striking yellow and red abdomen. This species resembled Autochloris thyestes Druce, 1883, described from Ecuador, but certain details and characteristics suggested a more complex situation. After reviewing recent literature, we found the revision of the genus Tigridania Kaye, 1918 by Grados & Ramírez (2021). The genus Tigridania is monotypic, containing only the type species Tigridania quadricincta Kaye, 1918, described from the Rio Ucayali in the upper Amazon. The species Isanthrene flavizonata Gaede, 1926 which is also a large and robust species with translucent wings, was synonymized with T. quadricincta, by Grados & Ramirez (2021). However in T. quadricincta the abdomen is creamy-yellow with broad black bands and a black tip, markedly different from our species. On the other hand, the male genitalia and secondary sexual characteristics are very similar to those of the type species. Therefore, we have decided to describe it below as a new species, under the name Tigridania magdalenae sp. nov.