A new Argentinean species of Sturmiodexia Townsend (Diptera: Tachinidae), with an updated species key

Sturmiodexia Townsend, 1919 is a Neotropical genus within the tachinid tribe Dexiini. Recently, Platyrrhinodexia Townsend, 1927 was put in synonymy with Sturmiodexia with four species, ranging from Peru to Brazil. Here, as part of a comprehensive examination of the fauna of Dexiini inhabiting Argentina, led to the discovery of a new species, Sturmiodexia brethesi sp. nov. described from both male and female specimens. In addition, a diagnosis of Sturmiodexia moyobambensis Townsend, 1929 is included. This study includes detailed photographs and an updated key to all known Sturmiodexia species.