Three new species of Dexosarcophaga Townsend, 1917 are described based on male specimens collected in Brazil, Dexosarcophaga sinoi sp. nov., Dexosarcophaga autisfera sp. nov., and Dexosarcophaga clavis sp. nov. Male morphology is represented by photographs and detailed illustrations of terminalia. Dexosarcophaga carvalhoi (Lopes, 1980), Dexosarcophaga globulosa Lopes, 1946, Dexosarcophaga limitata (Lopes, 1975), Dexosarcophaga paulistana (Lopes, 1982b), and Dexosarcophaga petra Santos, Pape and Mello-Patiu 2022 are recorded for the first time in Argentina. Also, Dexosarcophaga lenkoi Lopes, 1968, Dexosarcophaga montana (Lopes, 1975), and Dexosarcophaga transita Townsend, 1917 have their distribution expanded with new records. Dexosarcophaga transita is considered a senior synonym of Dexosarcophaga chaetosa Blanchard, 1939 syn. nov., Dexosarcophaga itaqua Dodge, 1966 syn. nov., and Dexosarcophaga lopesi Dodge, 1968 syn. nov. With the addition of the new species and the new synonymies proposed, Dexosarcophaga now contains 58 species, of which 10 are recorded in Argentina and 35 in Brazil.

Graphical Abstract