willistoni Thompson (nom. nov. for dolosa Williston). Type locality: Peru, Chanchamayo. HT M (BMNH). Distr.: Colombia (Antioquia (Caldas), Risaralda (Pereira)), Costa Rica, Mexico. Refs.: Williston, 1891: 37, pi. 1: 7 (habitus), 7 a–b (head) (name preocc. by Walker, 1857 (Baccha)); Hull, 1949 c: 234, fig. 202 (abdomen); Thompson et al. 1976: 30 (cat.); Zumbado & Thompson, 2000: 784, fig. 18–19 (M genitalia complex), 790 (desc.).

Material examined. COLOMBIA: Antioquia: Caldas, 6.090000°, -75.638000°, 1560m, 28.xi. 2007 (MEFLG). Risaralda: Pereira, Wildlife Sanctuary Otún Quimbaya, 4.728880 °, - 75.577850 °, 1890m, 1 female, 13- 14 -iv. 11, Leg. N. Uribe, Vsr. Chiken (CEUA).