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Synidotea laticauda
Image courtesy of Robert Aguilar, Smithsonian Environmental Research Center
Synidotea laticauda
Taxonomic Group: Crustaceans-Isopods


Synidotea laticauda is a marine isopod. Its native range has been debated, but recent evidence suggests it is native to Asia. It was first described from San Francisco Bay, California in 1897 where it is found within sessile invertebrate communities. It is only known from San Francisco and Willapa Bay (Washington) on the West Coast and is believed to be introduced. It has also been introduced to the East Coast of North America (South Carolina – New Jersey) and Europe (France, Belgium and the Netherlands). The correct name and identity of this species has been disputed and molecular analysis is needed to further examine its taxonomic and biogeographic history.

* Content for this species is based on the literature and peer review is pending - if you have comments or feedback please contact Paul Fofonoff at

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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