arx (Fluke), 1936:60 (Baccha). Type locality: Brazil, "Cois Parma Cos". HT F (AMNH). Distr.: Colombia ((Alejandria, Fredonia, Medellín, San Roque), Quindio (Filandia) Risaralda (Pereira)), Brazil, Costa Rica. Refs.: 1936:60, fig. 2 (abdomen), 3 (wing); Hull, 1949c:248, figs. 259–261 (abdomens); 274, fig. 361 (wing); Thompson et al. 1976:13 (cat.). Material examined. COLOMBIA: Antioquia: Alejandria, 6.401714°, -75.058838°, 1200m, 1male, 8.xi.07, Leg. A.L. Montoya, Vsr. Fish (CEUA); Fredonia, 5.916573°, -75.683347°, 1010m, 1male, Leg. Entomology Group, Net (CEUA); Medellín, Universidad Nacional de Colombia, 6.267404°, -75.585789°, 1570m, 2males, 10.i.2009, Leg. A.L. Montoya, larvae preying nymphs of Antianthe expansa Germar 1835 (Membracidae) (CEUA); San Roque, San Jose del Nus, 6.503175°, -74.926885°, 830m, 1male, 5.i.2007, Leg. N. Uribe, Vsr. Liver (CEUA); Quindio: Filandia, Hacienda Bengala, 4.685291°, -75.617533°, 2000m, 1male, 1female, 10.ix.2008, Leg. A.L. Montoya, Net (CEUA); Risaralda: Pereira, Wildlife Sanctuary Otún Quimbaya, 4.728880°, - 75.577850°, 1890m, 1female, v.2001, Leg. H. Vargas, Vsr. Fish (CEUA).

Published as part of Montoya, Augusto L., 2016, FAMILY SYRPHIDAE, pp. 457-537 in Zootaxa 4122 (1) on page 469, DOI: 10.11646/zootaxa.4122.1.39, http://zenodo.org/record/259323