First records of the genus Aristosyrphus Curran, 1941 (Diptera, Syrphidae) from Ecuador

We record Aristosyrphus carpenteri (Hull, 1945) for the first time from South America. This species was previously known from Panama and Costa Rica. New specimens, collected in Pichincha Province of Ecuador, represent the first reported occurrence of this flower fly genus from the country. Images, diagnosis, and DNA barcodes are provided to help with the identification of this species.