Terrestrial Mollusca of Illinois – INHS Mollusk Collection

The following list was compiled by Chris Phillips (now retired). 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). We have indicated membership of all clades above the superfamily level. Note that the membership contains only those clades with Illinois species.

Special Status Legend

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

Class Gastropoda (contains clades Neritomorpha & Apogastropoda)

Clade Neritomorpha (contains the clade Cycloneritimorpha)
Clade Cycloneritimorpha
- Family Helcinidae (1 species)
  - Hendersonia occulta (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
  - Pomatiopsis lapidaria (Say, 1817) – Slender Walker
Clade Heterobranchia (contains clades Lower Heterobranchia [see 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.
    
    Cochliocopanitens (Gallenstein, 1848) – Robust Pillar
- Superfamily Pupilloidea
  - Family Strobilopsidae (3 species)
    
    Strobilops aeneus Pilsbry, 1926 – Bronze Pinecone
    
    Strobilopsaffinis Pilsbry, 1893 – Eightfold Pinecone, SGNC
    
    Strobilops labyrinthicus (Say, 1817) – Maze Pinecone
  - Family Valloniidae (7 species)
    
    Planogyra asteriscus (E.S. Morse, 1857) – Eastern Flat-whorl
    
    Valloniacostata (Muller, 1774) – Costate Vallonia
    
    Valloniaexcentrica Sterki, 1893 – Iroquois Vallonia
    
    Vallonia gracilicosta Reinhardt, 1883 – Multirib Vallonia SGNC
    
    Valloniaparvula Sterki, 1893 – Trumpet Vallonia
    
    Vallonia perspectiva Sterki, 1893 – Thin-lip Vallonia
    
    Valloniapulchella (Muller, 1774) – Lovely Vallonia
  - Family Vertiginidae (= Pupillidae in Turgeon et al., 1998) (28 species)
    
    Columella columella (Martens, 1830) † – Mellow Column
    
    Columellaedentula (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)†
    
    Vertigoelatior 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
    
    Vertigomorsei (Sterki, 1894) – Six-whorl Vertigo
    
    Vertigo occulta (Leonard, 1972) †
    
    Vertigo ovata (Say, 1822) – Ovate Vertigo
    
    Vertigo tridentata (Wolf, 1870) – Honey Vertigo
    
    Vertigoventricosa (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
  - Palliferadorsalis (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
    
    Zonitoideslimatulus (A. Binney, 1940) – Dull Gloss SGNC
    
    Zonitoidesnitidus (Muller, 1774) – Black Gloss
  - Family Oxychilidae (= Zonitidae in Turgeon et al) (12 species)
    
    Glyphyalinia indentata (Say, 1823) – Carved Glyph
    
    Glyphyaliniarhoadsi (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 vulgatus (H.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
    
    Neohelixalbolabris (Say, 1816) – Whitelip
    
    Neohelix alleni (Weatherby & Sampson, 1883) – Western Whitelip
    
    Neohelix divesta (Gould, 1851) – Ozark Whitelip
    
    Pateraappressa (Say, 1821) – Flat Bladetooth
    
    Patera pennsylvanica (Green, 1827) – Proud Globelet
    
    Stenotrema barbatum (G.H. Clapp, 1904) – Bristled Slitmouth
    
    Stenotremahirsutum (Say, 1817) – Hairy Slitmouth
    
    Stenotremastenotrema (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
    
    Xolotremaobstrictum (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
    
    Anguispirastrongyloides (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

^IIntroduced.

† 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.

³Turgeon 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 P, Rocroi JP. 2005. Classification and Nomenclature of Gastropod Families. Malacologia 47:1-397

Hubricht, L. 1985. The distributions of the native land mollusks of the eastern United States. Fieldiana, Zoology, N.S. 24: 1-191. https://doi.org/10.5962/bhl.title.3329.

Perez, K.E. and J.R. Cordeiro, Eds. 2008. A Guide for Terrestrial Gastropod Identification. Marla L. Coppolino, Illus. American Malacological Society. Carbondale, IL.

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. https://doi.org/10.47886/9781888569018.