Species: Procambarus clarkii

G - 200,000-2,500,000 square km (about 80,000-1,000,000 square miles) - G - Native range extends from the Mississippi-Ohio confluence down the Mississippi River floodplain to Louisiana, and along the Gulf coastal Plain southwest to Alabama, to the Rio Grande basin in south New Mexico and north Mexico. Mexican distribution includes Baja California, Baja California Sur, Chihuahua, Sonora, Sinaloa, Durango, Coahuila, Nuevo Leon, and Tamaulipas (Hernandez et al., 2008). It was widely introduced in many places throughout Africa, Asia, and Europe, and also outside its native range in North America. (See Hobbs, 1989). Genetic variation in introduced European populations found to be high enough to uniquely fingerprint most of the surveyed individuals (Barbaresi et al., 2003) and a similar situation exists in Asia (Yue et al., 2010). In the United States, established non-native populations now occur in California, Nevada, Idaho, Illinois, New York, North Carolina, Ohio, Oregon, and Washington (Taylor and Schuster, 2004).