AQUATIC MOLLUSCA OF ILLINOIS

Class Bivalvia

Order Unionoida - Freshwater Mussels (79 species) Family Margaritiferidae Cumberlandia monodonta (Say, 1829) - Spectaclecase SE Family Unionidae Subfamily Anodontinae (12 species) Alasmidonta marginata Say, 1818 - Elktoe
Alasmidonta viridis (Rafinesque, 1820) - Slippershell ST
Pyganodon grandis (Say, 1829) - Giant Floater
Utterbackia imbecillis (Say, 1829) - Paper Pondshell
Anodonta suborbiculata Say, 1831 - Flat Floater
Anodontoides ferussacianus (Lea, 1834) - Cylindrical Papershell
Arcidens confragosus (Say, 1829) - Rock Pocketbook
Lasmigona complanata (Barnes, 1823) - White Heelsplitter
Lasmigona compressa (Lea, 1829) - Creek Heelsplitter
Lasmigona costata (Rafinesque, 1820) - Flutedshell
Simpsonaias ambigua (Say, 1825) - Salamander Mussel SE
Strophitus undulatus (Say, 1817) - Creeper Subfamily Ambleminae (25 species) Amblema plicata (Say, 1817) - Threeridge
Cyclonaias tuberculata (Rafinesque, 1820) - Purple Wartyback ST
Elliptio crassidens (Lamarck, 1819) - Elephantear ST
Elliptio dilatata (Rafinesque, 1820) - Spike ST
Fusconaia ebena (Lea, 1831) - Ebonyshell ST
Fusconaia flava (Rafinesque, 1820) - Wabash Pigtoe
Fusconaia subrotunda (Lea, 1831) - Longsolid X
Hemistena lata (Rafinesque, 1820) - Cracking Pearlymussel FE, X
Megalonaias nervosa (Rafinesque, 1820) - Washboard
Plethobasus cicatricosus (Say, 1829) - White Wartyback FE, X
Plethobasus cooperianus (Lea, 1834) - Orangefoot Pimpleback SE, FE
Plethobasus cyphyus (Rafinesque, 1820) - Sheepnose SE
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 SE
Pleurobema sintoxia (Rafinesque, 1820) - Round Pigtoe
Quadrula cylindrica (Say, 1817) - Rabbitsfoot SE
Quadrula fragosa (Conrad, 1835) - Winged Mapleleaf FE, X
Quadrula metanevra (Rafinesque, 1820) - Monkeyface
Quadrula nodulata (Rafinesque, 1820) - Wartyback
Quadrula pustulosa (Lea, 1831) - Pimpleback
Quadrula quadrula (Rafinesque, 1820) - Mapleleaf
Tritogonia verrucosa (Rafinesque, 1820) - Pistolgrip
Uniomerus tetralasmus (Say, 1831) - Pondhorn Subfamily Lampsilinae (41 species) Actinonaias ligamentina (Lamarck, 1819) - Mucket
Cyprogenia stegaria (Rafinesque, 1820) - Fanshell SE, FE
Ellipsaria lineolata (Rafinesque, 1820) - Butterfly ST
Epioblasma flexuosa (Rafinesque, 1820) - Leafshell (†), X
Epioblasma obliquata (Rafinesque, 1820) - White Catspaw FE, X
Epioblasma personata (Say, 1829) - Combshell (†), X
Epioblasma phillipsii (Conrad, 1835) - Conrad's Riffleshell (†), X
Epioblasma propinqua (Lea 1857) - Tennessee Riffleshell (†), X
Epioblasma rangiana (Lea, 1838) - Northern Riffleshell FE, X
Epioblasma sampsonii (Lea, 1861) - Wabash Riffleshell (†), X
Epioblasma torulosa (Rafinesque, 1820) - Tubercled Blossom FE, X
Epioblasma triquetra (Rafinesque, 1820) - Snuffbox SE
Lampsilis abrupta (Say, 1831) - Pink Mucket SE, FE, X
Lampsilis cardium Rafinesque, 1820 - Plain Pocketbook
Lampsilis fasciola Rafinesque, 1820 - Wavyrayed Lampmussel SE
Lampsilis higginsii (Lea, 1857) - Higgin's Eye SE, FE
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 X
Ligumia recta (Lamarck, 1819) - Black Sandshell ST
Ligumia subrostrata (Say, 1831) - Pondmussel
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 SE
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
Toxolasma lividis (Rafinesque, 1831) - Purple Lilliput SE
Toxolasma parvus (Barnes, 1823) - Lilliput
Toxolasma texasiensis (Lea, 1857) - Texas Lilliput
Truncilla donaciformis (Lea, 1828) - Fawnsfoot
Truncilla truncata Rafinesque, 1820 - Deertoe
Venustaconcha ellipsiformis (Conrad, 1836) - Ellipse
Villosa fabalis (Lea, 1831) - Rayed Bean SE, X
Villosa iris (Lea, 1829) - Rainbow SE
Villosa lienosa (Conrad, 1834) - Little Spectaclecase SE

Order Venerioda Family Sphaeriidae - Fingernail Clams (26 species) Musculium lacustre (Müller, 1774) - Lake Fingernailclam
Musculium partumeium (Say, 1822) - Swamp Fingernailclam
Musculium securis (Prime, 1852) - Pond Fingernailclam
Musculium transversum (Say, 1829) - Long Fingernailclam
Pisidium adamsi Prime, 1852 - Adam Peaclam
Pisidium casertanum (Poli, 1791) - Ubiquitous Peaclam
Pisidium compressum Prime, 1852 - Ridged-beak Peaclam
Pisidium conventus Clessin, 1877 - Alpine Peaclam
Pisidium cruciatum Sterki, 1895 - Ornamented Peaclam
Pisidium dubium (Say, 1817) - Greater Eastern Peaclam
Pisidium equilaterale Prime, 1852 - Round Peaclam
Pisidium fallax Sterki, 1896 - River Peaclam
Pisidium ferrugineum Prime, 1852 - Rusty Peaclam
Pisidium idahoense Roper, 1890 - Giant Northern Peaclam
Pisidium lilljeborgi (Clessin, 1886) - Lilljeborg Peaclam
Pisidium nitidum Jenyns, 1832 - Shiny Peaclam
Pisidium punctatum Sterki, 1895 - Perforated Peaclam
Pisidium punctiferum (Guppy, 1867) - Striate Peaclam
Pisidium rotundatum Prime, 1852 - Fat Peaclam
Pisidium variabile Prime, 1852 - Triangular Peaclam
Pisidium walkeri Sterki, 1895 - Walker Peaclam
Sphaerium fabale (Prime, 1852) - River Fingernailclam
Sphaerium occidentale (Lewis, 1856) - Herrington Fingernailclam
Sphaerium rhomboideum (Say, 1822) - Rhomboid Fingernailclam
Sphaerium simile (Say, 1817) - Grooved Fingernailclam
Sphaerium striatinum (Lamarck, 1818) - Striated Fingernailclam Family Corbiculidae Corbicula fluminea (Müller, 1774) - Asian clam I Family Dreissenidae Dreissena polymorpha (Pallas, 1771) - Zebra mussel I

Class Gastropoda - Freshwater Snails (76 species)

Subclass Prosobranchia

Order Mesogastropoda Family Valvatidae (5 species) Valvata bicarinata Lea, 1841 - Two-ridge Valvata
Valvata lewisi Currier, 1868 - Fringed Valvata
Valvata perdepressa Walker, 1906 - Purplecap Valvata
Valvata sincera Say, 1824 - Mossy Valvata
Valvata tricarinata (Say, 1817) - Threeridge Valvata Family Vivparidae (7 species) Campeloma crassulum Rafinesque, 1819 - Ponderous Campeloma
Campeloma decisum (Say, 1816) - Pointed Campeloma
Lioplax sulculosa (Menke, 1827) - Furowed Lioplax
Viviparus georgianus (Lea, 1834) - Banded Mysteryshell
Viviparus intertextus (Say, 1829) - Rotund Mysteryshell
Viviparus subpurpureus (Say, 1829) - Olive Mysteryshell
Cipangopaludina chinensis (Reeve, 1863) - Chinese Mysteryshell I Family Bithyniidae Bithynia tentaculata (Linnaeus, 1758) - Mud Bithynia I Family Hydrobiidae (12 species) Amnicola limosa (Say, 1817) - Mud Amnicola
Amnicola pilsbryi Walker, 1906 - Lake Duskysnail
Amnicola walkeri Pilsbry, 1898 - Canadian Duskysnail
Birgella subglobosus (Say, 1825) - Globe Siltsnail
Cincinnatia cincinnatiensis (Anthony, 1840)
Fontigens aldrichi (Call & Beecher, 1886) - Hoosier Amnicola
Fontigens nickliniana (Lea, 1839) - Watercress Snail
Hoyia sheldoni (Pilsbry, 1890) - Storm Hydrobe
Probythinella lacustris (Baker, 1928) - Delta Hydrobe
Pyrgulopsis lustrica (Pilsbry, 1890) - Boreal Marstonia
Pyrgulopsis scalariformis (Wolf, 1870) - Moss Pyrg
Stomatogyrus depressus (Tryon, 1862) - Sandbar Pebblesnail Family Pomatiopsidae (2 species) Pomatiopsis cincinnatiensis (Lea, 1840) - Brown Walker
Pomatiopsis lapidaria (Say, 1817) - Slender Walker Family Pleuroceridae (11 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
Leptoxis trilineata (Say, 1829) - Broad Mudalia
Lithasia armigera (Say, 1821) - Armored Rocksnail
Lithasia obovata (Say, 1829) - Shawnee Rocksnail
Lithasia verrucosa (Rafinesque, 1820) - Vericose Rocksnail
Pleurocera acuta Rafinesque, 1831 - Sharp Hornsnail
Pleurocera alveare (Conrad, 1834) - Rugged Hornsnail
Pleurocera canaliculata (Say, 1821) - Silty Hornsnail

Subclass Pulmonata

Order Basomamatophora

Family Lymnaeidae (12 species) Acella haldemani (Binney, 1867) - Spindle Lymnaea
Fossaria dalli (Baker, 1907) - Dusky Fossaria
Fossaria humilis (Say, 1822) - Marsh Fossaria
Fossaria obrussa (Say, 1825) - Golden Fossaria
Fossaria parva (Lea, 1841) - Pygmy Fossaria
Fossaria 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 woodruffi (Baker 1901) - Coldwater Pondsnail Family Physidae (5 species) Aplexa elongata (Say, 1821) - Lance Aplexa
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 (12 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) -
Planorbella armigera (Say, 1821) - Thicklip Rams-horn
Planorbella campanulata (Say, 1821) - Bellmouth Rams-horn
Planorbella pseudotrivolvis (Baker 1920)
Planorbella trivolvis (Say, 1817) - Marsh Rams-horn
Planorbella truncata (Miles, 1861) - Druid Rams-horn
Promenetus exacuous (Say, 1821) - Sharp Sprite Family Ancylidae (6 species) Ferrissia fragilis (Tryon, 1863) - Fragile Ancylid
Ferrissia parallela (Haldeman, 1841) - Oblong Ancylid
Ferrissia rivularis (Say, 1817) - Creeping Ancylid
Laevapex diaphanus (Haldeman, 1841) - Cymbal Ancylid
Laevapex fuscus (C.B. Adams, 1841) - Dusky Ancylid
Rhodacmea hinkleyi (Walker, 1908) - Knobby Ancylid

(†) = Extinct (5 mussels)
FE = Federally Endangered (14 mussels)
X = Extirpated from Illinois (17 mussels)
SE = Illinois State Endangered (20 mussels)
ST = Illinois State Threatened (7 mussels)
I = Introduced (2 bivalves & 4 snails)

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