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Taxonomic Status of the Percid Fish Etheostoma nigrum susanae
Wayne C. Starnes and Lynn B. Starnes
Vol. 1979, No. 3 (Aug. 1, 1979), pp. 426-430
Stable URL: http://www.jstor.org/stable/1443217
Page Count: 5
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The taxonomic status of Etheostoma nigrum susanae, a form endemic to the upper Cumberland River drainage in Kentucky and Tennessee, has been in question in recent years, but lack of specimens has prevented attempts at clarification. Recently acquired material has facilitated an investigation; the results indicate consistent differences between E. n. susanae (Jordan and Swain) and E. n. nigrum Rafinesque, as well as evidence of intergradation, which suggest that susanae should continue to be accorded subspecific status. This subspecies of johnny darter is rare and apparently threatened.