Abstract New records of the mud-dauber wasp Sceliphron fistularium (Dahlbom, 1843) for South America are reported. First record for Upper Demerara-Berbice (Guyana), Miranda (Venezuela), Vaupes (Colombia), Azuay, Orellana, Manabi, and Napo (Ecuador), Ayacucho and Cusco (Peru), Alagoas and Distrito Federal (Brazil), Amambay and Central (Paraguay), Canelones and Cerro Largo (Uruguay), and Santa Fe (Argentina) are given. The detailed distribution for each country of the continent is shown.