Invasion

Invasion Description

1st Record: Terrebonne Parish/LA/swamp ~4 km east of Chacahoula on HWY 20 (2008, USGS Nonindigenous Aquatic Species Program 2009)

Geographic Extent

Terrebonne Parish/LA/swamp ~4 km east of Chacahoula on HWY 20 (2008, USGS Nonindigenous Aquatic Species Program 2009); Lafourche Parish/LA/ Ditch near Gulf Intracoastal Waterway (7/10/2016, USGS Nonindigenous Aquatic Species Program 2016, snails laying egs)