Alabama Snails in the Genus Pleurocera
Family Pleuroceridae
Rugged Hornsnail Pleurocera alveare. Uncommon. Restricted to Tennessee River in the tailwaters of Wilson, Wheeler, and possibly Guntersville dams. Found primarily in lotic habitats. HIGH CONSERVATION CONCERN.
Ringed Hornsnail Pleurocera annulifera. Common. Endemic to, and widespread in, Black Warrior River system. Found in both lotic and lentic habitats. Low Conservation Concern.
Spiral Hornsnail Pleurocera brumbyi. Special concern. Endemic to tributaries of Tennessee River in northern Alabama. Found in both lentic and lotic habitats. Moderate Conservation Concern.
Silty Hornsnail Pleurocera canaliculatum. Abundant. Restricted to Tennessee River system. Found throughout. High variability with regard to shell morphology may indicate a species complex. Found in a variety of habitats. Lowest Conservation Concern.
Corpulent Hornsnail Pleurocera corpulenta. Rare. Endemic to Tennessee River. Historically found across northern Alabama. Only remnant populations found in the upper Guntersville Reservoir, Jackson County. Found only in lotic habitats. HIGHEST CONSERVATION CONCERN.
Shortspire Hornsnail Pleurocera curta. Poorly known. Endemic to Tennessee River system. Historically reported from across northern Alabama. Not reported in several years. Moderate Conservation Concern.
Rough Hornsnail Pleurocera foremani. Rare. Endemic to Mobile Basin. Known from Cahaba and Coosa rivers; Only remnant populations found in lower Yellowleaf Creek and Coosa River at Wetumpka. Usually found in areas with at least some current. HIGHEST CONSERVATION CONCERN.
Noble Hornsnail Pleurocera nobilis. Poorly known. Endemic to Tennessee River system. Known from Jackson County possibly downstream to Madison County. Found in a variety of habitats. Appears to intergrade with P. canaliculatum. Moderate Conservation Concern.
Broken Hornsnail Pleurocera postelli. Poorly known. Endemic to Tennessee River system in northwestern Alabama. Found in small streams. Taxonomic status uncertain. Moderate Conservation Concern.
Smooth Hornsnail Pleurocera prasinata. Common. Endemic to Mobile Basin. Found in Alabama River, and in lower Coosa and Cahaba rivers. Found in a variety of habitats. Low Conservation Concern.
Skirted Hornsnail Pleurocera pyrenella. Special concern. Endemic to a small area of Tennessee River drainage in north-central Alabama. Found in both lentic and lotic habitats. HIGH CONSERVATION CONCERN.
Upland Hornsnail Pleurocera showalteri. Special concern. Endemic to upper Coosa River. Usually found in areas with at least some current. Moderate Conservation Concern.
Sulcate Hornsnail Pleurocera trochiformis. Poorly known. Endemic to Tennessee River system and reported from across northern Alabama. Found in a variety of habi-tats.Taxonomic status uncertain. Moderate Conservation Concern.
Brook Hornsnail Pleurocera vestita. Special concern. Endemic to Mobile Basin. Known from tributaries of Coosa and Alabama rivers. Usually found in lotic habitats. Moderate Conservation Concern.
Telescope Hornsnail Pleurocera walkeri. Special concern. Endemic to Tennessee River system. Still found in several tributaries of Tennessee River in northwestern Alabama. Usually found in lotic habitats. Moderate Conservation Concern.
