The following list was compiled by Chris Phillips . 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). 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.
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
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
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 exile H.C. Lea, 1842 – Ice Thorn
Clade Stylommatophora (contains subclades Elasmognatha, Orthurethra & Informal group Sigmurethra)
Clade Elasmognatha
Superfamily Succineoidea
Family Succineidae (12 species)
Clade Orthurethra
Superfamily Cochlicopoidea
Family Cochlicopidae (=Cionellidae in Turgeon et al., 19983) (4 species)
Superfamily Pupilloidea
Family Strobilopsidae (3 species)
Family Valloniidae (7 species)
Family Vertiginidae (= Pupillidae in Turgeon et al., 1998) (28 species)
Informal Group Sigmurethra
Superfamily Arionoidea
Family Arionidae (2 species)
Family Philomycidae (6 species)
Superfamily Gastrodontoidea
Family Euconulidae (=Helicarionidae in Turgeon et al., 1998) (6 species)
Family Gastrodontidae (= Zonitidae in Turgeon et al., 1998) (8 species)
Family Oxychilidae (= Zonitidae in Turgeon et al) (12 species)
Family Pristilomatidae (= Zonitidae in Turgeon et al) (2 species)
Superfamily Helicoidea
Family Polygyridae (28 species)
Superfamily Limacoidea
Family Agriolimacidae (2 species)
Family Limacidae (2 species)
Superfamily Orthalicoidea
Family Orthalicidae (=Bulimulidae in Turgeon et al., 1998) (1 species)
Rhabdotus dealbatus (Say, 1821) – Whitewashed Rabdotus
Superfamily Punctoidea
Family Discidae (7 species)
Family Helicodiscidae (5 species)
Family Punctidae (3 species)
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
Hubricht, L. 1985. The distributions of the native land mollusks of the eastern United States. Fieldiana, Zoology, N.S. 24: 1-191.
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.