Suckers of the subgenus Pantosteus from Provo River and "Cottonwood Creek", Utah

Contrary to the reports of several authors, Acomus generosus, a sucker of t he subgenus Pantosteus of Catostomus, may have been collected in Big Cotton wood Creek or Little Cottonwood Creek, Salt Lake County, Utah, and possibly in Provo River, Utah County, Utah. Multiple Pantosteus species may exist i n PI-ovo River. Synonymies of the suckers that have been collected in Provo River and "Cottonwood Creek'' are provided. A comparison of their morpholo gies shows several distinctions. There is a need for further systematic (in cluding up-to-date biochemical) analyses of these catostomids.