Born in Lecce in 1914.
Exponent of the second wave of Futurism, he made his debut on the art scene in 1932 with a solo exhibition at the Roman Bragaglia gallery out of commerce, presented by Enrico Prampolini.
Particularly attentive to the themes of aeropainting for all the Thirties Delle Site exhibited with the group of futurists, and participated in the mainnational art exhibitions (II Quadriennale d'Arte of Rome, 1935; XX International Biennale of Venice, 1936; XXI International Biennale of Venice, 1938; III Quadrennial of Art in Rome, 1939).
He collaborates with the world of cinema creating illustrations and set works for numerous films. During the 1950s and 1960s, while the futurist language of the early years was reworked in terms of the breakdown of lights and colors, the exhibition activity continued intense.
From the seventies onwards Delle Site once again approached the themes that had characterized his painting of the thirties, the themes of aeropainting, with particular attention to pure form and geometric rigor.
He died in Rome in 1996.