calda (Walker), 1852:232 (Syrphus). Type locality: " Brazil ". HT M (BMNH).

Distr.: Colombia (Valle del Cauca), Argentina, Brazil, Colombia (Valle del Cauca), Paraguay.

Refs.: Fluke, 1937:4, fig. 6 (abdomen); Vockeroth, 1969:163, fig. 75 (M genitalia); Thompson et al. 1976:14 (cat.).