2793 Erimystax x-punctatus (Hubbs & Crowe, 1956) Leuciscidae Minnows Pogonichthyinae Cypriniformes Teleostei Gravel chub North America: Thames River system in southern Ontario, Canada; Ohio River basin from New York and Pennsylvania to Wabash River in Illinois, USA (absent south of Ohio River except 1 record in upper Green River, Kentuky, USA; Mississippi River basin from southern Wisconsin and southern Minnesota south to northern Arkansas and eastern Oklahoma, USA; Ouachita River drainage in Arkansas.