Invasion

Invasion Description

1st Record: St. Augustine/FL/Atlatnic Ocean estuaries (1923, USNM 57859, US National Museum of Natural History 2009)

Geographic Extent

St. Augustine/FL/Atlantic Ocean estuaries (1923, USNM 57859, US National Museum of Natural History 2009); Palm Valley, Duval County/FL/Intracoastal Waterway (1959, USNM 108168, US National Museum of Natural History 2016, burroows 'honeycombing' mud exposed at low tide)