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Mollusca of Illinois The following lists were compiled by Kevin Cummings, Jeremy Tiemann, Alison Stodola, and Rachel Vinsel (aquatic Mollusca) and Chris Phillips (terrestrial Mollusca). References are cited at the beginning of each list. Because of our poor HTML skills, we have made no effort to show taxonomy using differential tabs, but we have indicated membership of all clades above the superfamily level. Note that the membership contains only those clades with Illinois species. For information on taxonomy of Mollusca, see our Phylogenetics of Mollusca page. Special status includes S - state threatened, SE - state endangered, FT - federally threatened, FE - federally endangered, X - extirpated, (†) - extinct, SGNC - Species in Greatest Need of Conservation (IL Wildlife Action Plan), I- introduced/non-native Aquatic MolluscaDistributional data taken from Cummings (1991), Cummings and Mayer (1992), Tiemann and Cummings (2010), Tiemann et al. (2013), Johnson et al. (2013), and Stodola et al. (2014). Taxonomy and common names for mussels follows Williams et al. (2017). Scientific and common names for aquatic snails follows Johnson et al. (2013). Class BivalviaOrder Unionoida - Freshwater Mussels (82 species) Family Margaritiferidae (1 species) Margaritifera monodonta (Say, 1829) - Spectaclecase SE, FE
Family Unionidae Subfamily Anodontinae (12 species) Alasmidonta marginata Say, 1818 - Elktoe
Alasmidonta viridis (Rafinesque, 1820) - Slippershell ST Anodontoides ferussacianus (Lea, 1834) - Cylindrical Papershell Arcidens confragosus (Say, 1829) - Rock Pocketbook SGNC Lasmigona complanata (Barnes, 1823) - White Heelsplitter Lasmigona compressa (Lea, 1829) - Creek Heelsplitter SGNC Lasmigona costata (Rafinesque, 1820) - Flutedshell SGNC Pyganodon grandis (Say, 1829) - Giant Floater
Utterbackia imbecillis (Say, 1829) - Paper Pondshell
Utterbackiana suborbiculata (Say, 1831) - Flat Floater Subfamily Ambleminae (69 species) Actinonaias ligamentina (Lamarck, 1819) - Mucket
Amblema plicata (Say, 1817) - Threeridge
Cyclonaias nodulata (Rafinesque, 1820) - Wartyback
Cyclonaias pustulosa (Lea, 1831) - Pimpleback Cyclonaias tuberculata (Rafinesque, 1820) - Purple Wartyback ST
Ellipsaria lineolata (Rafinesque, 1820) - Butterfly ST
Elliptio crassidens (Lamarck, 1819) - Elephantear SE Epioblasma cincinnatiensis (Lea, 1840) - Ohio Riffleshell(†), X
Epioblasma flexuosa (Rafinesque, 1820) - Leafshell (†), X
Epioblasma obliquata (Rafinesque, 1820) - White Catspaw FE, X
Epioblasma personata (Say, 1829) - Combshell (†), X Epioblasma propinqua (Lea 1857) - Tennessee Riffleshell (†), X Epioblasma rangiana (Lea, 1838) - Northern Riffleshell SE, FE Epioblasma sampsonii (Lea, 1861) - Wabash Riffleshell (†), X Epioblasma torulosa (Rafinesque, 1820) - Tubercled Blossom FE, X Epioblasma triquetra (Rafinesque, 1820) - Snuffbox SE, FE Eurynia dilatata (Rafinesque, 1820) - Spike ST Fusconaia flava (Rafinesque, 1820) - Wabash Pigtoe Fusconaia subrotunda (Lea, 1831) - Longsolid X Hemistena lata (Rafinesque, 1820) - Cracking Pearlymussel FE, X Lampsilis abrupta (Say, 1831) - Pink Mucket SE, FE
Lampsilis cardium Rafinesque, 1820 - Plain Pocketbook Lampsilis fasciola Rafinesque, 1820 - Wavyrayed Lampmussel SE Lampsilis higginsii (Lea, 1857) - Higgin's Eye SE, FE Lampsilis hydiana (Lea, 1838) - Louisiana Fatmucket
Lampsilis ovata (Say, 1817) - Pocketbook
Lampsilis siliquoidea (Barnes, 1823) - Fatmucket Lampsilis teres (Rafinesque, 1820) - Yellow Sandshell Leptodea fragilis (Rafinesque, 1820) - Fragile Papershell Leptodea leptodon (Rafinesque, 1820) - Scaleshell SE FE Ligumia recta (Lamarck, 1819) - Black Sandshell ST Ligumia subrostrata (Say, 1831) - Pondmussel Megalonaias nervosa (Rafinesque, 1820) - Washboard
Obliquaria reflexa Rafinesque, 1820 - Threehorn Wartyback
Obovaria olivaria (Rafinesque, 1820) - Hickorynut Obovaria retusa (Lamarck, 1819) - Ring Pink FE, X Obovaria subrotunda (Rafinesque, 1820) - Round Hickorynut X Plectomerous dombeyanus (Valenciennes, 1827) - Bankclimber
Plethobasus cicatricosus (Say, 1829) - White Wartyback FE, X
Plethobasus cooperianus (Lea, 1834) - Orangefoot Pimpleback SE, FE Plethobasus cyphyus (Rafinesque, 1820) - Sheepnose SE, FE Pleurobema clava (Lamarck, 1819) - Clubshell SE, FE Pleurobema cordatum (Rafinesque, 1820) - Ohio Pigtoe SE Pleurobema plenum (Lea, 1840) - Rough Pigtoe FE, X
Pleurobema rubrum (Rafinesque, 1820) - Pyramid Pigtoe X Pleurobema sintoxia (Rafinesque, 1820) - Round Pigtoe Potamilus alatus (Say, 1817) - Pink Heelsplitter
Potamilus capax (Green, 1832) - Fat Pocketbook SE, FE Potamilus ohiensis (Rafinesque, 1820) - Pink Papershell Potamilus purpuratus (Lamarck, 1819) - Bleufer Ptychobranchus fasciolaris (Rafinesque, 1820) - Kidneyshell SE Quadrula nobilis (Contrad, 1854) - Gulf Mapleleaf
Quadrula quadrula (Rafinesque, 1820) - Mapleleaf
Reginaia ebenus (Lea, 1831) - Ebonyshell SE
Theliderma cylindrica (Say, 1817) - Rabbitsfoot FT, SE
Theliderma metanevra (Rafinesque, 1820) - Monkeyface SGNC
Tritogonia verrucosa (Rafinesque, 1820) - Pistolgrip Toxolasma lividium (Rafinesque, 1831) - Purple Lilliput SE
Toxolasma parvum (Barnes, 1823) - Lilliput Toxolasma texasiense (Lea, 1857) - Texas Lilliput Truncilla donaciformis (Lea, 1828) - Fawnsfoot Truncilla truncata Rafinesque, 1820 - Deertoe Uniomerus tetralasmus (Say, 1831) - Pondhorn Venustaconcha ellipsiformis (Conrad, 1836) - Ellipse SGNC
Villosa fabalis (Lea, 1831) - Rayed Bean FE, X Villosa iris (Lea, 1829) - Rainbow SE Villosa lienosa (Conrad, 1834) - Little Spectaclecase ST Order Venerioda Family Sphaeriidae - Fingernail Clams (26 species) Musculium lacustre (Müller, 1774) - Lake Fingernailclam Family Corbiculidae (2 species) Corbicula sp. - purple Asian clam I
Corbicula fluminea (Müller, 1774) - Asian clam I
Family Dreissenidae (2 species) Dreissena bugensis (Andrusov, 1897) - Quagga Mussel
Dreissena polymorpha (Pallas, 1771) - Zebra mussel I
Class Gastropoda - Freshwater Snails (76 species) - see below for terrestrial snails Clade Apogastropoda (contains clades Caeonogastropoda & Heterobranchia) Clade Caenogastropoda (contains Informal Group Architaenoglossa and clades Sorbeoconcha & Hypogastropoda) Informal Group Architaenoglossa Family Viviparidae (8 species) Campeloma crassulum Rafinesque, 1819 - Ponderous Campeloma
Campeloma decisum (Say, 1816) - Pointed Campeloma Campeloma rufum (Haldeman, 1841) - [uncertain classification]
Lioplax sulculosa (Menke, 1827) - Furowed Lioplax
Viviparus georgianus (Lea, 1834) - Banded Mysteryshell Viviparus intertextus (Say, 1829) - Rotund Mysteryshell SGNC Viviparus subpurpureus (Say, 1829) - Olive Mysteryshell SGNC Cipangopaludina chinensis (Reeve, 1863) - Chinese Mysteryshell I Clade Sorbeoconcha Family Pleuroceridae (12 species) Elimia costifera (Reeve, 1861) - Corded Elimia
Elimia livesens (Menke, 1830) - Liver Elimia Elimia semicarinata (Say, 1829) - Fine-ridged Elimia Leptoxis praerosa (Say, 1821) - Onyx Rocksnail SE Leptoxis trilineata (Say, 1829) - Broad Mudalia Lithasia armigera (Say, 1821) - Armored Rocksnail SGNC Lithasia geniculata Haldeman 1840 - Ornate Rocksnail SGNC
Lithasia obovata (Say, 1829) - Shawnee Rocksnail SE Lithasia verrucosa (Rafinesque, 1820) - Vericose Rocksnail Pleurocera acuta Rafinesque, 1831 - Sharp Hornsnail Pleurocera alveare (Conrad, 1834) - Rugged Hornsnail SGNC Pleurocera canaliculata (Say, 1821) - Silty Hornsnail Clade Hypogastropoda (contains clade Littorinimorpha) Clade Littorinimorpha Family Bithyniidae (1 species) Bithynia tentaculata (Linnaeus, 1758) - Mud Bithynia I Family Amnicolidae (3 species) Amnicola limosa (Say, 1817) - Mud Amnicola
Lyogyrus pilsbryi Walker, 1906 - Lake Duskysnail
Lyogyrus walkeri Pilsbry, 1898 - Canadian Duskysnail Family Hydrobiidae (12 species) Birgella subglobosus (Say, 1825) - Globe Siltsnail
Cincinnatia integra (Say, 1821) - Midland Siltnail SGNC Fontigens aldrichi (Call & Beecher, 1886) - Hoosier Amnicola SGNC Fontigens antroecetes (Hubricht, 1940) - Enigmatic Cavesnail SE
Fontigens nickliniana (Lea, 1839) - Watercress Snail Hoyia sheldoni (Pilsbry, 1890) - Storm Hydrobe Marstonia lustrica (Pilsbry, 1890) - Boreal Marstonia
Marstonia scalariformis (Wolf, 1870) - Moss Pyrg SGNC
Probythinella emarginata (Kuster, 1852) - Delta Hydrobe
Somatogyrus depressus (Tryon, 1862) - Sandbar Pebblesnail SGNC Somatogyrus integra (Say, 1829) - Ohio Pebblesnail
Somatogyrus tryoni Pilsbry & Baker, 1927 - Coldwater Pebblesnail
Family Pomatiopsidae (2 species) Pomatiopsis cincinnatiensis (Lea, 1840) - Brown Walker Clade Heterobranchia (contains clades Lower Heterobranchia & Pulmonata) Clade Lower Heterobranchia [=Allogastropoda, Heterostropha] Valvata bicarinata Lea, 1841 - Two-ridge Valvata Informal Group Pulmonata (contains clades Basommatophora & Eupulmonata) Clade Basommatophora (contains clade Hygrophila) Clade HygrophilaFamily Lymnaeidae (18 species) Acella haldemani (Binney, 1867) - Spindle Lymnaea
Galba dalli (Baker, 1907) - Dusky Fossaria Galba exigua (Lea, 1841) - Graceful Fossaria
Galba humilis (Say, 1822) - Marsh Fossaria
Galba modicella (Say, 1825) - Rock Fossaria
Galba obrussa (Say, 1825) - Golden Fossaria
Galba parva (Lea, 1841) - Pygmy Fossaria Galba rustica (Lea, 1841) - Rusty Fossaria
Galba tazewelliana (Wolf, 1870) - Tazewell Fossaria
Lymnaea stagnalis Linnaeus, 1758 - Swamp Lymnaea Pseudosuccinea columella (Say, 1817) - Mimic Lymnaea Radix auricularia (Linnaeus, 1758) - Big-ear Radix I Stagnicola caperatus (Say, 1829) - Wrinkled Marshsnail Stagnicola catascopium (Say, 1817) - Woodland Pondsnail Stagnicola elodes (Say, 1821) - Marsh Pondsnail Stagnicola exilis (Lea, 1834) - Flat-Whorled Pondsnail Stagnicola walkeriana Baker, 1926 - Calabash Pondsnail
Stagnicola woodruffi (Baker 1901) - Coldwater Pondsnail SGNC
Family Physidae (6 species) Aplexa elongata (Say, 1821) - Lance Aplexa
Physa skinneri Taylor, 1954 - Glass Physa
Physella gyrina (Say, 1821) - Tadpole Physa
Physella heterostropha (Say, 1817) - Pewter Physa Physella integra (Haldeman, 1841) - Ashy Physa Physella virgata (Gould, 1855) - Protean Physa Family Planorbidae (16 species) Biomphalaria glabrata (Say, 1818) - Bloodfluke Planorb I
Gyraulus deflectus (Say, 1824) - Flexed Gyro Gyraulus parvus (Say, 1817) - Ash Gyro Helisoma anceps (Menke, 1830) - Two-ridge Rams-horn Micromenetus dilatatus (Gould, 1841) - Bugle Sprite Micromenetus sampsoni (Ancey, 1885) SGNC Planorbella campanulata (Say, 1821) - Bellmouth Rams-horn Planorbella trivolvis (Say, 1817) - Marsh Rams-horn Planorbella truncata (Miles, 1861) - Druid Rams-horn Planorbula armigera (Say, 1821) - Thicklip Rams-horn
Promenetus exacuous (Say, 1821) - Sharp Sprite Promenetus umbilicatellus (Cockerell, 1887) - Umbilicate Sprite
These four species were formerly in Family Ancylidae, which was sunk into Planorbidae by Bouchet & Rocroi (2005) Ferrissia fragilis (Tryon, 1863) - Fragile Ancylid
Ferrissia rivularis (Say, 1817) - Creeping Ancylid Laevapex fuscus (C.B. Adams, 1841) - Dusky Ancyliid Rhodacmea hinkleyi (Walker, 1908) - Knobby Ancylid
Terrestrial Mollusca of Illinois Distributional data taken from range maps of Hubricht (1985) and state lists of Perez and Cordeiro (2008). Nomenclature to family level according to Bouchet & Rocroi (2005). Common names according to Turgeon et al. (1998). Class Gastropoda (contains clades Neritomorpha & Apogastropoda) Clade Neritomorpha (contains the clade Cycloneritimorpha) Clade Cycloneritimorpha Family Helcinidae (1 species) Hendersoniaocculta (Say, 1831) - Cherrystone Drop Clade Apogastropoda (contains clades Caenogastropoda & Heterobranchia) Clade Caenogastropoda (contains Informal Group Architaenoglossa and clades Sorbeoconcha & Hypogastropoda) Clade Hypogastropoda Family Pomatiopsidae (2 species) Pomatiopsis cincinnatiensis (Lea, 1840) - Brown Walker Clade Heterobranchia (contains clades Lower Heterobranchia [see above in aquatic section] & Pulmonata) Informal Group Pulmonata (contains clades Basommatophora [see above in aquatic section] & Eupulmonata) Clade Eupulmonata (Contains three groups of uncertain position & clade Stylommatophora) Clade Ellobioidea Family Ellobiidae (2 species) Carychium exiguum (Say, 1822) - Obese Thorn
Carychium exile H.C. Lea, 1842 - Ice Thorn
Clade Stylommatophora (contains subclades Elasmognatha, Orthurethra & Informal group Sigmurethra) Clade Elasmognatha Superfamily Succineoidea Family Succineidae (12 species) Catinella exile (Leonard, 1972) - not listed in Turgeon et al., 19981
Catinella gelida (F.C. Baker, 1927)†
Catinella parallela Franzen, 1979 - listed in Turgeon et al., 1998 as “classification uncertain”1,2
Catinella vermeta (Say, 1829)2 - Suboval Ambersnail
Novisuccinea chittenangoensis (Pilsbry, 1908) - Chittenango Ambersnail
Novisuccinea ovalis (Say, 1817) - Oval Ambersnail
Oxyloma deprimidum Franzen, 1973 - listed in Turgeon et al., 1998 as “classification uncertain”
Oxyloma peoriense (Wolf, in Walker, 1894) - Depressed Ambersnail
Oxyloma retusum (Lea, 1834) - Blunt Ambersnail
Oxyloma salleanum (Pfeiffer, 1849) - Louisiana Ambersnail SGNC
Succinea bakeri Hubricht, 1963 †
Succinea forsheyi I. Lea, 1864 - Spotted Ambersnail SGNC
Clade Orthurethra Superfamily Cochlicopoidea Family Cochlicopidae (=Cionellidae in Turgeon et al., 19983) (4 species) Cochlicopa lubrica (Muller, 1774) - Glossy Pillar
Cochlicopa lubricella (Porro, 1838) - Thin Pillar
Cochlicopa morseana (Doherty, 1878) - Appalachian Pillar; not known from IL, but extreme SW IN Re: Hubricht, 1985.
Cochliocopa nitens (Gallenstein, 1848) - Robust Pillar
Superfamily Pupilloidea Family Strobilopsidae (3 species) Strobilops aeneus Pilsbry, 1926 - Bronze Pinecone
Strobilops affinis Pilsbry, 1893 - Eightfold Pinecone, SGNC
Strobilops labyrinthicus (Say, 1817) - Maze Pinecone
Family Valloniidae (7 species) Planogyra asteriscus (E.S. Morse, 1857) - Eastern Flat-whorl
Vallonia costata (Muller, 1774) - Costate Vallonia
Vallonia excentrica Sterki, 1893 - Iroquois Vallonia
Vallonia gracilicosta Reinhardt, 1883 - Multirib Vallonia SGNC
Vallonia parvula Sterki, 1893 - Trumpet Vallonia
Vallonia perspectiva Sterki, 1893 - Thin-lip Vallonia
Vallonia pulchella (Muller, 1774) - Lovely Vallonia
Family Vertiginidae (= Pupillidae in Turgeon et al., 1998) (28 species) Columella columella (Martens, 1830) † - Mellow Column
Columella edentula (Draparnaud, 1805) - Toothless Column
Columella simplex (Gould, 1841)4 - listed in Turgeon et al., 1998 as “classification uncertain”
Gastrocopta abbreviata (Sterki, 1909) - Plains Snaggletooth
Gastrocopta armifera (Say, 1821) - Armed Snaggletooth
Gastrocopta contracta (Say, 1822) - Bottleneck Snaggletooth
Gastrocopta corticaria (Say, 1816) - Bark Snaggletooth
Gastrocopta holzingeri (Sterki, 1889) - Lamda Snaggletooth
Gastrocopta pentodon (Say, 1822) - Comb Snaggletooth
Gastrocopta procera (Gould, 1840) - Wing Snaggletooth
Gastrocopta rogersensis Nekola & Coles, 2001 - no common name given by authors SGNC
Gastrocopta similis (Sterki, 1909) - Great Lakes Snaggletooth
Gastrocopta tappaniana (C.B. Adams, 1842) - White Snaggletooth
Pupilla muscorum (Linnaeus, 1758) - Widespread Column
Pupoides albilabris (C.B. Adams, 1841) - White-lip Dagger
Vertigo brierensis (Leonard, 1972)†
Vertigo elatior Sterki, 1894 - Tapered Vertigo
Vertigo gouldi (A. Binney, 1843) - Variable Vertigo
Vertigo hannai Pilsbry, 1919†
Vertigo hubrichti Pilsbry, 1934†
Vertigo meramecensis Van Devender, 1979 - Bluff Vertigo
Vertigo milium (Gould, 1840) - Blade Vertigo
Vertigo modesta (Say, 1824) - Cross Vertigo
Vertigo morsei Sterki, 1894 - Six-whorl Vertigo
Vertigo occulta Leonard, 1972 †
Vertigo ovata Say, 1822 - Ovate Vertigo
Vertigo tridentata Wolf, 1870 - Honey Vertigo
Vertigo ventricosa (E.S. Morse, 1865) - Five-tooth Vertigo
Informal Group Sigmurethra Superfamily Arionoidea Family Arionidae (2 species) Arion intermedius (Normand, 1852) I - Hedgehog Arion
Arion subfuscus (Draparnaud, 1805) I - Dusky Arion
Family Philomycidae (6 species) Megapallifera mutabilis (Hubricht, 1951) - Changeable Mantleslug
Megapallifera ragsdalei (Webb, 1950) - Ozark Mantleslug SGNC
Pallifera dorsalis (A. Binney, 1842) - Pale Mantleslug
Pallifera fosteri F.C. Baker, 1939 - Foster Mantleslug
Pallifera marmorea Pilsbry, 1948 - Marbled Mantleslug
Philomycus carolinianus (Bosc, 1802) - Carolina Mantleslug
Superfamily Gastrodontoidea Family Euconulidae (=Helicarionidae in Turgeon et al., 1998) (6 species) Euconulus chersinus (Say, 1821) - Wild Hive
Euconulus dentatus (Sterki, 1893) -Toothed Hive
Euconulus fulvus (Muller, 1774) - Brown Hive
Euconulus polygyratus (Pilsbry, 1899) - Fat Hive
Euconulus trochulus (Reinhardt, 1883) -Silk Hive
Guppya sterkii (Dall, 1888) - Sterki’s Granule
Family Gastrodontidae (= Zonitidae in Turgeon et al., 1998) (8 species) Striatura meridionalis (Pilsbry and Ferriss, 1906) - Median Striate
Striatura milium (E.S. Morse, 1859) - Fine-ribbed Striate
Ventridens demissus (A. Binney, 1843) - Perforate Dome
Ventridens ligera (Say, 1821) - Globose Dome
Ventridens virginicus (Vanatta, 1936) - Split-tooth Dome
Zonitoides arboreus (Say, 1816) - Quick Gloss
Zonitoides limatulus (A. Binney, 1940) - Dull Gloss SGNC
Zonitoides nitidus (Muller, 1774) - Black Gloss
Family Oxychilidae (= Zonitidae in Turgeon et al) (12 species) Glyphyalinia indentata(Say, 1823) -Carved Glyph
Glyphyalinia rhoadsi (Pilsbry, 1899) - Sculpted Glyph
Glyphyalinia solida (H.B. Baker, 1930) †
Glyphyalinia wheatleyi(Bland, 1883) - Bright Glyph
Mesomphix cupreus (Rafinesque, 1831) - Copper Button
Mesomphix friabilis(W.G. Binney, 1857) - Brittle Button
Mesomphix globosus (MacMillan, 1940) - Globose Button
Mesomphix perlaevis (Pilsbry, 1900) - Smooth Button
Mesomphix vulgatusH.B. Baker, 1933 - Common Button
Nesovitrea electrina(Gould, 1841)- Amber Glass
Paravitrea capsella (Gould, 1851)- Dimple Supercoil
Paravitrea significans(Bland, 1866)- Domed Supercoil SGNC
Family Pristilomatidae (= Zonitidae in Turgeon et al) (2 species) Hawaiia alachuana (Dall, 1885)- Southeastern Gem
Hawaiia minuscula (A. Binney, 1841) - Minute Gem
Superfamily Helicoidea Family Polygyridae (28 species) Allogona profunda (Say, 1821) - Broad-banded Forestsnail
Daedalochila leporina (Gould, 1848) - Gulf Coast Liptooth
Euchemotrema fraternum (Say, 1824) - Upland Pillsnail
Euchemotrema hubrichti (Pilsbry, 1940) - Carinate Pillsnail SGNC
Euchemotrema leai (A. Binney, 1841) - Lowland Pillsnail
Inflectarius edentatus (Sampson, 1889) - Smooth-lip Shagreen
Inflectarius inflectus (Say, 1821) - Shagreen
Mesodon clausus (Say, 1821) - Yellow Globelet
Mesodon elevatus (Say, 1821) - Proud Globe
Mesodon thyroidus (Say, 1816) - White-lip Globe
Mesodon zaletus (A. Binney, 1837) - Toothed Globe
Millerelix dorfeuilliana (I. Lea, 1838) - Oakwood Liptooth
Neohelix albolabris (Say, 1816) - Whitelip
Neohelix alleni (Weatherby & Sampson, 1883) - Western Whitelip
Neohelix divesta (Gould, 1851) - Ozark Whitelip
Patera appressa (Say, 1821) - Flat Bladetooth
Patera pennsylvanica (Green, 1827) - Proud Globelet
Stenotrema barbatum (G.H. Clapp, 1904) - Bristled Slitmouth
Stenotrema hirsutum (Say, 1817) - Hairy Slitmouth
Stenotrema stenotrema (Pfeiffer, 1842) - Inland Slitmouth
Triodopsis discoidea (Pilsbry, 1904) - Rivercliff Threetooth SGNC
Triodopsis fradulentata (Pilsbry, 1894) - Baffled Threetooth SGNC
Triodopsis tridentata (Say, 1816) - Northern Threetooth
Triodopsis vulgata Pilsbry, 1940 - Dished Threetooth
Webbhelix multilineata (Say, 1821) - Striped Whitelip
Xolotrema denotatum (Ferussac, 1821) - Velvet Wedge
Xolotrema fosteri (F.C. Baker, 1921) - Bladetooth Wedge
Xolotrema obstrictum (Say, 1821) - Sharp Wedge SGNC
Superfamily Limacoidea Family Agriolimacidae (2 species) Deroceras laeve (Muller, 1774) - Meadow Slug
Deroceras reticulatum (Muller, 1774) I - Grey Fieldslug
Family Limacidae (2 species) Lehmannia valentiana (Ferussac, 1821)I - Threeband Gardenslug
Limax maximus Linnaeaus, 1758 I - Giant Gardenslug
Superfamily Orthalicoidea Family Orthalicidae (=Bulimulidae in Turgeon et al., 1998) (1 species) Rhabdotus dealbatus (Say, 1821) - Whitewashed Rabdotus Superfamily Punctoidea Family Discidae (7 species) Anguispira alternata (Say, 1816) - Flamed Tigersnail
Anguispira kochi (L. Pfeiffer, 1845) - Banded Tigersnail
Anguispira strongyloides ((Pfeiffer, 1854) -Southern Tigersnail
Discus macclintocki (F.C. Baker, 1928) - Pleistocene Disc FE, SE
Discus patulus (Deshayes, 1830) - Domed Disc
Discus shimekii (Pilsbry, 1890) - Striate Disc
Discus whitneyi (Newcomb, 1864) - Forest Disc
Family Helicodiscidae (5 species) Helicodiscus inermis H.B. Baker, 1929 - Oldfield Coil
Helicodiscus notius Hubricht, 1962 - Tight Coil
Helicodiscus parallelus (Say, 1821) - Compound Coil – date incorrect in Turgeon et al., 1998
Helicodiscus shimeki Hubricht, 1962 - temperate Coil
Helicodiscus singleyanus (Pilsbry, 1880) - smooth Coil– date incorrect in Turgeon et al., 1998
Family Punctidae (3 species) Punctum minutissimum (I. Lea, 1841) - Small Spot
Punctum smithi Morrison, 1935 - Lamellate Spot
Punctum vitreum (H.B. Baker, 1830) - Glass Spot
Superfamily Rhytidoidea Family Haplotrematidae (1 species) Haplotrema concavum (Say, 1821) - Gray-foot Lancetooth
Footnotes I Introduced. † Known as a Pleistocene fossil only. 1 Perez and Cordeiro (2008) listed this species as occurring in Illinois. 2 Listed in Hubricht (1985) as a synonym of Catinella avara, but Turgeon et al. (1998) listed C. avara as a species dubium being based on a juvenile shell and most specimens referred to as C. avara are actually referable to C. vermeta. 3 Turgeon et al. (1998) cited A.S. Kennard (1942. Proc. Malac. Soc. London 25:111-118) to justify the use of Cionellidae and Cionella instead of Cochlicopidae and Cochlicopa. 4 Listed in Hubricht (1985) as a valid species citing Hubricht (1971. Sterkiana 42:45).
Literature Cited Bouchet & Rocroi, 2005. Classification and Nomenclature of Gastropod Families. Malacologia 47:1-397 Cummings, K.S. 1991. The aquatic Mollusca of Illinois. Pp. 429-439 in L.M. Page and M.R. Jeffords, eds. Our living heritage: The biological resources of Illinois. Illinois Natural History Survey Bulletin 34(4):357–477. Cummings, K.S. and C.A. Mayer. 1992. Field guide to freshwater mussels of the Midwest. Illinois Natural History Survey, Manual 5. 194 pp. Hubricht, L. 1985. The distributions of the native land mollusks of the eastern United States. Fieldiana, Zoology, N.S. 24: 1-191. Johnson, P.D., A.E. Bogan, K.M. Brown, N.M. Burkhead, J.R. Cordeiro, J.T. Garner, P.D. Hartfield, D.A.W. Lepitzki, G.L. Mackie, E. Pip, T.A. Tarpley, J.S. Tiemann, N.V. Whelan, and E.E. Strong. 2013. Conservation Status of Freshwater Gastropods of Canada and the United States. Fisheries 38:247-282. Perez, K.E. and J.R. Cordeiro, Eds. 2008. A Guide for Terrestrial Gastropod Identification. Marla L. Coppolino, Illus. American Malacological Society. Carbondale, IL. Stodola, A.P., S.A. Douglass, and D.K. Shasteen. 2014. Historical and current distributions of freshwater mussels in Illinois. Illinois Natural History Survey Technical Report 2014(37). 82 pp. Tiemann, J.S. and K.S. Cummings. 2010. New record for the freshwater snail Lithasia geniculata (Gastropoda: Pleuroceridae) in the Ohio River, Illinois, with comments on potential threats to the population. Southeastern Naturalist 9:171-176. Tiemann, J.S., K.S. Cummings, and J.E. Schwegman. 2013. First occurrence of the bankclimber Plectomerus dombeyanus (Valenciennes, 1827) (Mollusca: Unionidae) in Illinois. Transactions of the Illinois State Academy of Science 106:1-2. Turgeon, D.D. et al. 1998. Common and Scientific Names of Aquatic Invertebrates from the United States and Canada: Mollusks. Second Edition. American Fisheries Society Special Publication 26. Pp. 526. Williams, J.D., A.E. Bogan, R.E. Butler, K.S. Cummings, J.T. Garner, J.L. Harris, N.A. Johnson, and G.T. Watters. 2017. A revised list of the freshwater mussels (Mollusca: Bivalvia: Unionida) of the United States and Canada. Freshwater Mollusk Biology and Conservation 20:33-58. |