chalybea Hendel, 1930: 138 .

Type locality, Argentina, Lapango, Pilcomayo. ST M/F (NMW), (SMN).

Distr.: Nearctic: United States (Alabama, Arkansas, District of Columbia, Iowa, Louisiana, Missouri, Nevada, Tennessee, Texas, Virginia, West Virginia). Neotropical: Argentina, Bolivia, Colombia, Ecuador (Puerto Orellana), Mexico (Veracruz, Sonora), Paraguay, Trinidad and Tobago, West Indies (Dominican Republic, Jamaica, Puerto Rico). Refs.: Zatwarnicki & Mathis, 2001: 22 (obscurella group).