Invasion

Invasion Description

1st Record: Galveston Island/TX/Galveston Bay (USNM 86218, United States Museum of Natural History 2008);

Geographic Extent

Galveston Island jetty/TX/Galveston Bay (USNM 86218, United States Museum of Natural History 2008; Whitten and Hedgepeth 1950); Galveston Island/TX/Offat's Bayou, Galveston Bay (1939, USNM 86216, United States Museum of Natural History 2008); Galveston/TX/Galveston Bay; rock jetties and seawalls, entire Texas Coast/TX/Gulf of Mexico (Whitten et al. 1950; Clark and Robertson 1982)