Globally Extinct: Crustaceans

Sooty CrayfishThe IUCN Red List of Threatened Species (Version 2011.1) has listed 11 crustacean species as extinct and no subspecies. The Sixth Extinction website lists 12 recent extinctions of crustacean species. Several missing species have not been seen for years and are possibly extinct as well.

Image: A Sooty Crayfish (Pacifastacus nigrescens) photographed by George C. Clinton. This photograph is published in California Fish and Game (Volume 45, number 1, January 1959), a journal of the California Department of Fish and Game. According to the Biodiversity Heritage Library (BHL), this image is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Do you know any species or subspecies that should be added to this list or has been rediscovered? If so, please contact this website. Additional information is always welcome.

The subjoined table shows the species that recently became globally extinct.

Species (12) / Subspecies (0)
Scientific Name Common Name TEW Status IUCN Status
Afrocyclops pauliani Unknown EX EX
Austrogammarus australis Unknown EX EX
Cambarellus alvarezi Unknown EX EX
Cambarellus chihuahuae Chihuahua Dwarf Crayfish EX EX
Dexteria floridana Florida Fairy Shrimp EX CR
Liocypris grandis Unknown EX EX
Namibocypris costata Unknown EX EX
Pacifastacus nigrescens Sooty Crayfish EX EX
Procambarus angustatus Sandhills Crayfish EX EX
Stygobromus lucifugus Rubious Cave Amphipod EX EX
Syncaris pasadenas Pasadena Freshwater Shrimp EX EX
Tropodiaptomus ctenopus Unknown EX EX



Center for Biological Diversity (2011). Two Florida Species Declared Extinct - Endangered Species Review Too Late to Save South Florida Rainbow Snake, Florida Fairy Shrimp. Press Release, 5 October 2011. Downloaded on 6 October 2011 from

IUCN (2011). IUCN Red List of Threatened Species. Version 2011.1. <>. Downloaded on 6 October 2011.


Citation: Maas, P.H.J. (2011). Globally Extinct: Crustaceans. In: TSEW (). The Sixth Extinction Website. <>. Downloaded on .
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Updated: 8 October 2011


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