Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Review and Redescription of the Freshwater Atyid Shrimp Genus Syncaris Holmes, 1900, in California

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Journal of Crustacean Biology

Abstract All known specimens of the presumed extinct freshwater shrimp species Syncaris pasadenae, formerly known from the Los Angeles River and other lowland stream sites in southern California, were examined. Existing specimens are housed in the Natural History Museum of Los Angeles County, California Academy of Sciences, or U.S. National Museum of Natural History, Smithsonian Institution, Washington, D.C. Syncaris pasadenae is diagnosed and redescribed and compared to its only congener, Syncaris pacifica, an extant species restricted to a few small coastal streams in northern California (Marin, Napa, and Sonoma counties). Syncaris pacifica is also redescribed. Salient and consistent differences between the species are the dorsal dentition of the rostrum and the number of pereopods bearing exopods, a character often associated with higher-level taxonomic differences in the past. The distribution of the species and the position of the genus within the family Atyidae are discussed.

Affiliations: 1: a (JWM, correspondence) Research and Collections Branch, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, U.S.A. (; ; 2: b (MKW) Department of Biology, Texas A & M University, College Station, Texas 77843-3258, U.S.A. (


Full text loading...


Data & Media loading...

1. Born J. W. 1968 "Osmoregulatory capacities of two caridean shrimps, Syncaris pacifica (Atyidae) and Palaemon macrodactylus (Palaemonidae)." Biological Bulletin (Woods Hole) Vol 134 235 244
2. Bouvier E-L. 1905 "Observations nouvelles sur les crevettes de la famille des Atyids." Bulletin Scientifique de la France et de la Belgique Vol 39 57 134
3. Bouvier E-L. 1925 "Recherches sur la morphologie, les variations, la distribution gograpique des crevettes de la famille des Atyids." Encyclopdie Entomologique (Paul Lechevalier, editeur), 12 Rue de Tournon, Paris
4. Chace F. A. Jr. 1992 "On the classification of the Caridea (Decapoda)." Crustaceana Vol 63 70 80
5. Chace F. A. Jr. 1997 "The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 19071910, Part 7: Families Atyidae, Eugonatonotidae, Rhynchocinetidae, Bathypalaemonellidae, Processidae, and Hippolytidae." Smithsonian Contributions to Zoology Vol 587 1 106
6. Eng L. L. 1981 "Distribution, Life History, and Status of the California Freshwater Shrimp, Syncaris pacifica (Holmes)." State of California Department of Fish and Game, Inland Fisheries Endangered Species Program Special Publication 81-1. 27 pp
7. Eng L. L. 1984 "Rare, threatened and endangered invertebrates in California riparian systems." Pp. 915919 in R. E. Warner and K. M. Hendrix, eds. California Riparian Systems. Ecology, Conservation, and Productive Management. University of California Berkeley Press
8. George F. A. 1927 "The eastern bullfrog in southern California." California Fish and Game Vol 13 222
9. Hedgpeth J. W. 1968 "The atyid shrimp of the genus Syncaris in California." International Revue der Gesamten Hydrobiologie Vol 53 511 524
10. Hedgpeth J. W. 1975 "California fresh and brackish water shrimps, with special reference to the present status of Syncaris pacifica (Holmes)." Unpublished report, Office of Endangered Species, U. S. Fish and Wildlife Service Report, Contract 14-16-008-841. 34 pp
11. Hobbs H. H. Jr. , Hart C. W. Jr. 1982 "The shrimp genus Atya (Decapoda: Atyidae)." Smithsonian Contributions to Zoology Vol 364 1 143
12. Holmes S. J. 1895 "West American Crustacea." Proceedings of the California Academy of Sciences Vol 4 563 588
13. Holmes S. J. 1900 "Synopsis of California stalk-eyed Crustacea." Occasional Papers of the California Academy of Sciences Vol 7 7 262
14. Holthuis L. B. 1986 "A new genus and species of subterranean shrimp from western Australia (Crustacea: Decapoda: Atyidae)." Zoologische Mededelingen Vol 60 103 111
15. Holthuis L. B. 1993 "The Recent Genera of the Caridean and Stenopodidean Shrimps (Crustacea, Decapoda), with an Appendix on the Order Amphionidacea." Nationaal Natuurhistorisch Museum, Leiden, The Netherlands. 328 pp
16. IUCN (The World Conservation Union) 2001 "IUCN Red List Categories and Criteria, version 3.1." IUCN Species Survival Commission, International Union for Conservation of Nature and Natural Resources. 30 pp
17. Kingsley J. S. 1880 "Carcinological notes." Proceedings of the Academy of Natural Sciences of Philadelphia Vol 1879 416
18. Kingsley J. S. 1897 "On a new genus and two new species of macrurous Crustacea." Bulletin of the Essex Institute Vol 27 95 99 pl. 3
19. Li S. K. 1981 "Survey of the California freshwater shrimp, Syncaris pacifica, in Lagunitas Creek, Marin County, California, August 1981." Unpublished report for the Marin Municipal Water District, Corte Madera, California. 15 pp
20. Martin J. W. , Davis G. E. 2001 "An updated classification of the Recent Crustacea." Natural History Museum of Los Angeles County, Science Series No Vol 39 1 124
21. Messer R. J. , Brumbaugh J. H. 1989 "The distribution and status of the California freshwater shrimp, Syncaris pacifica (Holmes)." Final Report to the California Department of Fish and Game, December, 1989. 28 pp
22. Noel P. Y. 1992 "Cle Preliminaire d'identification des Crustacea Decapoda de France et des principales autres especs d'Europe." Museum National d'Histoire Naturelle Paris. 146 pp
23. Ortmann A. E. 1902 "The geographical distribution of freshwater decapods and its bearing upon ancient geography." Proceedings of the American Philosophical Society Vol 41 17 267 400
24. Serpa L. 1986 "Element stewardship abstract for California freshwater shrimp (Syncaris pacifica)." The Nature Conservancy, Fairfield Osborne Preserve. 11 pp
25. Serpa L. 1991 "California freshwater shrimp (Syncaris pacifica) survey for the U.S. Fish & Wildlife Service." Fish & Wildlife Service Enhancement, Sacramento Field Office, California. 17 pp
26. Serpa L. 1992a "Survey of the California Freshwater Shrimp (Syncaris pacifica) in Lagunitas Creek, Marin County, California." Survey for the Marin Municipal Water District. 36 pp
27. Serpa L. 1992b "Survey of the lower reaches of Huichica Creek for California freshwater shrimp (Syncaris pacifica) with recommendations for population enhancement." Unpublished report. 10 pp
28. Serpa L. 1996 "The California freshwater shrimp: a ghost-like crustacean we can't afford to lose." Tidelines (U.S. Fish & Wildlife Service, Don Edwards San Francisco Bay National Wildlife Refuge) Vol 16 1 3
29. United States Fish and Wildlife Service, Department of the Interior. 1988 "50 CFR Part 17. Endangered and threatened wildlife and plants; determination of endangered status for the California freshwater shrimp." Federal Register Vol 53 43884 43889

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Journal of Crustacean Biology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation