original illustration and description (description by indication, i.e. image and a name, no text),
"Rocky Mountains, North America" [specimen likely lost] Image from: Westwood, John Obadiah (1850-1852)
In: Doubleday, E., "The genera of diurnal Lepidoptera, comprising their generic characters, a notice of their habits and transformations, and a catalogue of the species of each genus."
London; Longman, Green & Longmans: xii + ii + 534 pp., 86 pls., pl. 64, f. 1