(A. Ferussac, 1807) Vertigo pusilla O. F. Müller, 1774 Vertigo antivertigo (Draparnaud, 1801) Vertigo substriata (Jeffreys, 1833) Vertigo pygmaea (Draparnaud, 1801) Vertigo lilljeborgi (Westerlund, 1871) Vertigo genesii (Gredler, 1856) Vertigo geyeri Lindholm, 1925 Vertigo ronnebyensis (Westerlund, 1871) Vertigo alpestris Alder, 1838 Vertigo angustior Jeffreys, 1830 Enidae Ena montana (Draparnaud, 1801) Merdigera obscura (O. F. Müller, 1774) Clausiliidae Cochlodina laminata (Montagu, 1803) Cochlodina orthostoma (Menke, 1828) Ruthenica filograna (Rossmässler, 1836) Macrogastra ventricosa (Draparnaud, 1801) Macrogastra plicatula (Draparnaud, 1801) Macrogastra borealis (Boettger, 1878) - synonym: Macrogastra latestriata (A. Schmidt, 1857) Clausilia bidentata (Ström, 1765) Clausilia cruciata (Studer, 1820) Clausilia pumila C. Pfeiffer, 1828 Clausilia dubia Draparnaud, 1805 Laciniaria plicata (Draparnaud, 1801) Balea biplicata (Montagu, 1803) Bulgarica cana (Held, 1836) Succineidae Succinea putris (Linnaeus, 1758) Succinella oblonga (Draparnaud, 1801) Oxyloma elegans (Risso, 1826) Ferussaciidae Cecilioides acicula (O. F. Müller, 1774) - nonindigenous since 2006 Punctidae Punctum pygmaeum (Draparnaud, 1801) Discidae Discus ruderatus (A. Ferussac, 1821) Discus rotundatus (O. F. Müller, 1774) Gastrodontidae Zonitoides nitidus (O. F. Müller, 1774) Euconulidae Euconulus fulvus (O. F. Müller, 1774) Euconulus alderi (Gray, 1840) Vitrinidae Vitrina pellucida (O. F. Müller, 1774) Zonitidae Vitrea crystallina (O. F. Müller, 1774) Vitrea contracta (Westerlund, 1871) Oxychilidae Aegopinella pura (Alder, 1830) Aegopinella nitidula (Draparnaud, 1805) Perpolita hammonis (Strøm, 1765) Perpolita petronella (L. Pfeiffer, 1853) Oxychilus cellarius (O. F. Müller, 1774) Oxychilus draparnaudi (Beck, 1837) Oxychilus alliarius (Miller, 1822) Limacidae Limax cinereoniger Wolf, 1803 Limax maximus Linnaeus, 1758 Limacus flavus (Linnaeus, 1758) Malacolimax tenellus (O. F. Müller, 1774) Lehmannia marginata (O. F. Müller, 1774) Agriolimacidae Deroceras laeve (O. F. Müller, 1774) ? Deroceras agreste Linnaeus, 1758 - marked with question mark in reference Deroceras reticulatum (O. F. Müller, 1774) Arionidae Arion subfuscus (Draparnaud, 1805) Arion circumscriptus Johnston, 1828 Arion fasciatus (Nilsson, 1823) Arion silvaticus Lohmander, 1937 ? Arion distinctus Mabille, 1868 - marked with question mark in reference ? Arion hortensis A. Fėrussac, 1819 - marked with question mark in reference Bradybaenidae Fruticicola fruticum (O. F. Müller, 1774) Hygromiidae Euomphalia strigella (Draparnaud, 1801) Trichia hispida (Linnaeus, 1758) Xerolenta obvia (Menke, 1828) Pseudotrichia rubiginosa (Rossmässler, 1838) Helicidae Arianta arbustorum (Linnaeus, 1758) Helicigona lapicida (Linnaeus, 1758) Isognomostoma isognomostomos (Schröter, 1784) Cepaea hortensis (O. F. Müller, 1774) Cepaea nemoralis (Linnaeus, 1758) Helix pomatia Linnaeus, 1758 Bivalvia Species of freshwater bivalves in Latvia include: Unionoida Margaritiferidae Margaritifera margaritifera (Linnaeus, 1758) Unionidae Unio pictorum (Linnaeus, 1758) Unio tumidus Philipsson, 1788 Unio crassus Philipsson, 1788 Anodonta anatina (O. F.