DistributionRead full entry
Range DescriptionThis species is one of the most widely distributed freshwater snails in the world with a high invasive potential (J. Cordeiro pers. comm. 2012). It is endemic to eastern North America generally, Nova Scotia and Quebec west to Manitoba, Minnesota and eastern Kansas south to central Texas and Florida (Burch 1989), and occurs almost all over the Neotropical region from Mexico to Brazil as well as much of Cuba (Pointier et al. 2005) and has been introduced around the world. It has been a successful invasive species in parts of South America (Lobato Paranse 1983, Jarne and Delay 1990), including Argentina (Zarco et al. 2011). It has also been introduced in Europe, New Zealand and different regions of Africa. In Central Europe it is known in Austria, Hungary and Romania. In the Mediterranean it has been recorded from France, Italy, Spain (Balearic Islands, Mainland) and Egypt (Brown 1994) where it is thought to have been introduced in 1944 (Mandahl-Barth 1968). In Europe, it has also invaded Latvia (Stalazs 2002), Greece (Welter-Schultes 2011), and the Czech Republic (Horsák et al. 2010). It has also invaded South Africa (Schutte and Frank 1964, De Kock et al. 1989), Australia (Boray et al. 1982) and New Zealand (Winterbourn 1973). Subspecies championi occurs from central Mexico south to Panama (Thompson 2008).