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Ampithoe longimana
Image courtesy of Adriana Radulovici, Biodiversity Institute of Ontario through and the CC BY-NC-SA 3.0 license.
Ampithoe longimana
Taxonomic Group: Crustaceans-Amphipods


Ampithoe longimana is a marine gammarid amphipod. It is found associated with algae and seagrasses in lower-intertidal to shallow coastal waters, where it constructs nests of detritus. It is native to the Western Atlantic where it ranges from Mexico to the Bay of Fundy, Canada. Beyond its native range, this species is not currently established in North America. Introduced populations were reported from California in 1949 and 1960, but no further records are known. No impacts were reported from these early introductions.  

* 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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