A new species of Dirphia Hübner, [1819] from Rio Grande do Sul and Santa Catarina, Brazil is described. Closely related to D.sombrero (Le Cerf, 1934), the new species differs by its smaller size and male genitalia (aedeagus bears dorsal vesica and this shows disperse spiculae). The female of DirphiarufescensF. Johnson & Michener, 1948 is described for the first time and its geographical distribution is updated.
Distribution; neotropical; taxonomy