Invasion

Invasion Description

1st Record: Matagorda County/TX/Colorado River mouth (1993, Hicks and Tunnell 1995). An email from David Hicks (3/2/2017, indicates that P. perna might be rare or absent in Texas since ~2000. He attributes the decline to hot summer weather (Kim Holzer, personal communication).

Geographic Extent

Matagorda County/TX/Colorado River mouth (1993, Hicks and Tunnell 1995)