Alabama Pebblesnails
Family Hydrobiidae
Mud Amnicola Amnicola limosa. Common and widespread. Found in tailwaters of Tennessee River dams and possibly in the Mobile Basin. Lowest Conservation Concern.
Manitou Cavesnail Antrorbis breweri. Poorly known. Known only from its type locality, Manitou Cave, Fort Payne, DeKalb County. Moderate Conservation Concern.
Globe Siltsnail Birgella subglobosa. Poorly known. Widespread, but distribution within state unknown. Found in muddy sand. Moderate Conservation Concern.
Cahaba Pebblesnail Clappia cahabensis. Believed extinct until recently rediscovered in the Cahaba River.HIGHEST CONSERVATION CONCERN.No species account because listed as extinct in Alabama Wildlife.
Umbilicate Pebblesnail Clappia umbilicata. Extinct. Endemic to Coosa River. Not reported since the river was impounded. Was restricted to shoal habitats. EXTINCT.
Flat Pebblesnail Lepyrium showalteri. Rare. Historically widespread in Coosa, Cahaba, and Little Cahaba rivers. Known to be extant at one site each in Cahaba and Little Cahaba Rivers. Restricted to shoal habitats. Listed as endangered by the U.S. Fish and Wildlife Service.HIGHEST CONSERVATION CONCERN.
Alligator Siltsnail Notogillia wetherbyi. Poorly known. Distribution within the state unknown. Moderate Conservation Concern.
Ghost Marstonia Marstonia arga. Common. Widespread in Tennessee River and tributaries across northern Alabama. Found primarily in streams in submerged clumps of bryophytes and tree roots, usually adjacent to current. Found in submerged macrophytes in reservoirs. Lowest Conservation Concern.
Coosa Pyrg Marstonia hershleri. Poorly known. Known only from Coosa River. Moderate Conservation Concern.
Olive Marstonia Marstonia olivacea. Extinct. Known only from Big Spring Creek, Madison County. EXTINCT.
Armored Marstonia Marstonia pachyta. Rare, but locally common. Endemic to Limestone Creek system, Limestone County. Found primarily in submerged clumps of tree roots and bryophytes.Listed as endangered by the U.S. Fish and Wildlife Service. HIGHEST CONSERVATION CONCERN.
Species account page 122. Change genus.
Moss Pyrg Pyrgulopsis scalariformis. Rare, but locally common. Once widespread, but apparently reduced to a single extant population in Flint River, Madison County. Found primarily in submerged clumps of tree roots and bryophytes. Usually adjacent to current. HIGHEST CONSERVATION CONCERN.
Rhapinema dacryon. Poorly known. Endemic to the Chipola River system. Moderate Conservation Concern.
Golden Pebblesnail Somatogyrus aureus. Poorly known. Endemic to Tennessee River. Not reported since the river was impounded. Moderate Conservation Concern.
Angular Pebblesnail Somatogyrus biangulatus. Poorly known. Endemic to Tennessee River. Known only from Muscle Shoals. Not reported since the river was impounded. Moderate Conservation Concern.
Knotty Pebblesnail Somatogyrus constrictus. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Coosa Pebblesnail Somatogyrus coosaensis. Poorly known. Endemic to Coosa River. Moderate Conservation Concern.
Stocky Pebblesnail Somatogyrus crassus. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Tennessee Pebblesnail Somatogyrus currierianus. Poorly known. Endemic to Tennessee River drainage. Known only from Madison County. Moderate Conservation Concern.
Hidden Pebblesnail Somatogyrus decipens. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Ovate Pebblesnail Somatogyrus excavatus. Poorly known. Endemic to Tennessee River drainage. Known only from Shoal Creek, Lauderdale County. Moderate Conservation Concern.
Cherokee Pebblesnail Somatogyrus georgianus. Poorly known, but widespread. Known from Alabama, Cahaba, and Tennessee rivers. Not reported recently. Moderate Conservation Concern.
Fluted Pebblesnail Somatogyrus hendersoni. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Granite Pebblesnail Somatogyrus hinkleyi. Poorly known. Endemic to Coosa and Tallapoosa rivers. Not reported since those rivers were impounded. Moderate Conservation Concern.
Atlas Pebblesnail Somatogyrus humerosus. Poorly known. Endemic to Tennessee River. Known only from Muscle Shoals. Moderate Conservation Concern.
Dwarf Pebblesnail Somatogyrus nanus. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Moon Pebblesnail Somatogyrus obtusus. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Tallapoosa Pebblesnail Somatogyrus pilsbryanus. Poorly known. Endemic to Tallapoosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Compact Pebblesnail Somatogyrus pumilus. Poorly known. Reported from Black Warrior River and at least one Coosa River tributary. Moderate Conservation Concern.
Pygmy Pebblesnail Somatogyrus pygmaeus. Poorly known. Endemic to Coosa River. Not reported since the river was impounded. Moderate Conservation Concern.
Quadrate Pebblesnail Somatogyrus quadratus. Poorly known. Endemic to Tennessee River system. Known only from Muscle Shoals and adjacent Shoal Creek, Lauderdale County. Not reported since the river was impounded. Moderate Conservation Concern.
Mud Pebblesnail Somatogyrus sargenti. Poorly known. Endemic to Tennessee River tributaries. Moderate Conservation Concern.
Rolling Pebblesnail Somatogyrus strengi. Poorly known. Endemic to, and formerly widespread in, Tennessee River system. Not reported since the river was impounded. Moderate Conservation Concern.
Choctaw Pebblesnail Somatogyrus substriatus. Poorly known. Reported from widespread localities throughout Alabama. Moderate Conservation Concern.
Opaque Pebblesnail Somatogyrus tennesseensis. Poorly known. Endemic to Tennessee River system. Reported only from Shoal Creek, Lauderdale County. Moderate Conservation Concern.
Gulf Coast Pebblesnail Somatogyrus walkerianus. Poorly known. Endemic to Conecuh River, Escambia County. Moderate Conservation Concern.
Sculpin Snail Stiobia nana. Poorly known. Endemic to Coldwater Spring Run, Calhoun County. Moderate Conservation Concern.
