Somatogyrus

Somatogyrus is a genus of very small freshwater and brackish water snails that have an operculum, aquatic gastropod micromolluscs in the family Lithoglyphidae.

Somatogyrus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Lithoglyphidae
Subfamily:	Lithoglyphinae
Genus:	Somatogyrus Gill, 1863 [1]

Species

Species within the genus Somatogyrus include:^[1]

• Reverse pebblesnail, Somatogyrus alcoviensis Krieger, 1972
• Somatogyrus aldrichi B. Walker, 1906 (W)
• Ouachita pebblesnail, †Somatogyrus amnicoloides B. Walker, 1915
• Golden pebblesnail, Somatogyrus aureus Tryon, 1865
• Angular pebblesnail, Somatogyrus biangulatus B. Walker, 1906
• Knotty pebblesnail, Somatogyrus constrictus B. Walker, 1904
• Coosa pebblesnail, Somatogyrus coosaensis B. Walker, 1904
• Thick-lipped pebblesnail, †Somatogyrus crassilabris B. Walker, 1915
• Stocky pebblesnail, Somatogyrus crassus B. Walker, 1904
• Tennessee pebblesnail, Somatogyrus currierianus (I. Lea, 1863)
• Hidden pebblesnail, Somatogyrus decipiens B. Walker, 1909
• Sandbar pebblesnail, Somatogyrus depressus (Tryon, 1862)
• Ovate pebblesnail, Somatogyrus excavatus B. Walker, 1906
• Cherokee pebblesnail, Somatogyrus georgianus B. Walker, 1904
• Fluted pebblesnail, Somatogyrus hendersoni B. Walker, 1909
• Granite pebblesnail, Somatogyrus hinkleyi B. Walker, 1904
• Atlas pebblesnail, Somatogyrus humerosus B. Walker, 1906
• Ohio pebblesnail, Somatogyrus integra (Say, 1829)
• Dwarf pebblesnail, Somatogyrus nanus B. Walker, 1904
• Moon pebblesnail, Somatogyrus obtusus B. Walker, 1904
• Sparrow pebblesnail, Somatogyrus parvulus Tryon, 1865
• Shale pebblesnail, Somatogyrus pennsylvanicus B. Walker, 1904
• Tallapoosa pebblesnail, Somatogyrus pilsbryanus B. Walker, 1904
• Compact pebblesnail, Somatogyrus pumilus (Conrad, 1834)
• Pygmy pebblesnail, Somatogyrus pygmaeus B. Walker, 1909
• Quadrate pebblesnail, Somatogyrus quadratus B. Walker, 1906
• Flint pebblesnail, Somatogyrus rheophilas F. G. Thompson, 1984
• Elk pebblesnail, Somatogyrus rosewateri M. E. Gordon, 1986
• Mud pebblesnail, Somatogyrus sargenti Pilsbry, 1895
• Rolling pebblesnail, Somatogyrus strengi Pilsbury & B. Walker, 1906
• Choctaw pebblesnail, Somatogyrus substriatus B. Walker, 1906
• Savannah pebblesnail, Somatogyrus tenax F. G. Thompson, 1969
• Opaque pebblesnail, Somatogyrus tennesseensis B. Walker, 1906
• Somatogyrus trothis W. Doherty, 1878
• Coldwater pebblesnail, Somatogyrus tryoni Pilsbry & F. C. Baker, 1927
• Panhandle pebblesnail, Somatogyrus virginicus B. Walker, 1904
• Gulf Coast pebblesnail, Somatogyrus walkerianus Aldrich, 1905
• Channeled pebblesnail, †Somatogyrus wheeleri B. Walker, 1915

Species brought into synonymy

• Somatogyrus clenchi, synonym of Aroapyrgus clenchi
• Somatogyrus mexicanus, synonym of Aroapyrgus mexicanus
• Somatogyrus subglobosus, synonym of Birgella subglobosa
• †Somatogyrus umbilicatus, synonym of †Clappia umbilicata

NB: WoRMS considers one more species than ITIS. It is marked (W) in the list above.^[2]