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Issue: Vol. 5653 No. 3: 27 Jun. 2025
Type: Article
Published: 2025-06-27
DOI: 10.11646/zootaxa.5653.3.8
Page range: 429-439
Abstract views: 223
PDF downloaded: 61

Catostomus murivallis, a new species of sucker (Cypriniformes: Catostomidae) from Wall Canyon Creek, Surprise Valley, in Northwestern Nevada, U.S.A.

Department of Biological Sciences; Box 870345; The University of Alabama; Tuscaloosa; AL 35487; USA
Department of Fisheries; Wildlife and Conservation Sciences; Oregon State University; Nash Hall; 2820 SW Campus Way; Corvallis; OR 97331; USA
University of Alaska Museum of the North; 1962 Yukon Drive; Fairbanks; AK 99775; USA; Department of Animal Science; Meyer Hall; University of California Davis; 1 Shields Avenue; Davis; CA 95616; USA; Present Address: Centre for Carbon Water and Food; The University of Sydney; 380 Werombi Road; Brownlow Hill; NSW 2570; Australia
Pisces Catostomini Conservation Desert Fishes Endangered Species Great Basin

Abstract


Since 1934 when it was originally collected by C. L. Hubbs and R. R. Miller, a Catostomus from Wall Canyon Creek has been considered a putative species. Occurring in a limited range in Surprise Valley, Washoe Co., Nevada, USA, this undescribed Wall Canyon Sucker exhibits an overall similarity to other Catostomus species that are naturally distributed in close geographic proximity. Molecular phylogenetic and population genetic studies have included the Wall Canyon Sucker and refined its relationships such that it is the sister taxon of the Warner Sucker Ca. warnerensis endemic to the Warner Basin of Oregon and closely related to the Owens Sucker Ca. fumeiventris of the Owens Valley in California. All three lineages occupy drainages just east of the Cascade Range and the Sierra Nevada mountains in western North America. Multiple genetic data sources support the separation of the Wall Canyon Sucker from Ca. murivallis and Ca. warnerensis with at least a Pleistocene division without recent gene flow. Here, we formally describe Catostomus murivallis sp. nov. from Wall Canyon Creek in Surprise Valley. Catostomus murivallis is statistically significantly different from Ca. fumeiventris and Ca. warnerensis at 16 of 34 and 17 of 34 morphometric characters investigated. Three of four and two of four meristic characters respectively were found to be significant different as well between Ca. murivallis and the two valid and closely related Catostomus species.

 

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How to Cite

Harris, P.M., Markle, D.F. & Campbell, M.A. (2025) Catostomus murivallis, a new species of sucker (Cypriniformes: Catostomidae) from Wall Canyon Creek, Surprise Valley, in Northwestern Nevada, U.S.A. Zootaxa, 5653 (3), 429–439. https://doi.org/10.11646/zootaxa.5653.3.8