“…Species occurrences in states were determined using primary literature, including published local checklists and available local Conabio (National Commission for the Knowledge and Use of Biodiversity) reports and our own records (Avendaño-Gil et al, 2010;Campos et al, 2013;Conabio, 2016;Contreras-Arquieta, 2000[Littoridinops monroensis (Frauenfeld, 1863, L. tenuipes (Couper, 1844), Ferrissia californica (Rowell, 1863), Gyraulus circumstriatus (Tryon, 1866), Micromenetus https://doi.org/10. 22201/ib.20078706e.2020.91.2909 brogniartianus (Lea, 1842)]; Cózatl-Manzano & Naranjo-García, 2007;Estrada-Loreto, 2011;Hershler et al, 1999[Tryonia imitator (Pilsbry, 1899]; Lam-Gordillo et al, 2012;López-López et al, 2009;Baqueiro et al, 2006;Naranjo-García, 2003;Ortega-Chávez et al, 2007 [Lymnaea stagnalis (Linnaeus, 1758)]; Naranjo- García & Meza Meneses, 2000[Ecrobia truncata (Vanatta, 1924, Gundlachia radiata (Guilding, 1828)]; Pérez-Rodríguez & Vicente-Velázquez, 2003;Ramos-Solís, 2018;Rangel-Ruiz, 2000[Drepanotrema depressissimum (Moricand, 1839, D. surinamense (Clessin, 1884)]; Rangel-Ruiz & Gamboa- Aguilar, 2005;Reguero & García-Cubas, 1989;Rosenberg et al, 2009;Serrano-Pinto & Caraveo-Patiño, 2002). Table 1 Checklist of Mexican freshwater gastropods (see abbreviations and definitions in Materials and methods).…”