ardesiaca, Gila Cope [E. D.] in Cope & Yarrow 1875:660, Pl. 30 (figs. 1, 1a-b) [Engineer Department, United States Army, Report upon the Geographical and Geological Explorations and Surveys west of the one hundredth Meridian v. 5 (Zoology) Chapter 6; ref. 968] Locality unknown [= probably Nevada or Arizona, U.S.A.]. Holotype (unique): USNM 16974. •Synonym of Richardsonius egregius (Girard 1858) -- (La Rivers 1994:399 [ref. 23389], Gilbert 1998:42 [ref. 23395]). Current status: Synonym of Richardsonius egregius (Girard 1858). Leuciscidae: Pogonichthyinae. Habitat: freshwater.