Abstract
Nasusina vallis, new speices, is described from Mesa Co., Colorado and compared with its apparent closest relative Nasusina inferior Hulst. The adults and male and female genitalia of both species are illustrated, along with pertinent head and leg structures.References
Barnes, W. & McDunnough J. (1918) Contributions to the Natural History of the Lepidoptera of North America. Vol. 4, no. 2. The Review Press, Decatur, Illinois, 273 pp.
Hulst, G.D. (1896) A classification of the Geometrina of North America, with descriptions of new genera and species. Transactions of the American Entomological Society, 23, 245–386, plates X–XI.
McDunnough, J. (1949) Revision of the North American species of the genus Eupithecia (Lepidoptera, Geometridae). Bulletin of the American Museum of Natural History, 93, 533–728, plates 26–32.
Scoble, M.J. (Ed) (1999) Geometrid Moths of the World: a Catalogue. CSIRO, Collingwood, Australia, 2 vol. 1,016 pp. + 129 pp. + 129 pp.