Pinnixa littoralis Holmes, 1894

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 252

publication ID	11755334
DOI	https://doi.org/10.5281/zenodo.5255358
persistent identifier	https://treatment.plazi.org/id/C5657B52-FF67-B3E8-44D1-FB56CD670C29
treatment provided by	Felipe (2021-08-24 08:22:12, last updated by Plazi 2023-11-04 15:45:02)
scientific name	Pinnixa littoralis Holmes, 1894
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Pinnixa littoralis Holmes, 1894 View in CoL

( Fig. 58D, E)

Pinnixa littoralis Holmes, 1894: 571 View in CoL , pl. 20, figs. 14–16. — Rathbun 1904: 188; 1917: 145, pl. 31, figs. 5–8, text fig. 89, 90. — Weymouth 1910: 58 (part). — Schmitt 1921: 260, pl. 40, figs. 5–8, text fig. 155. — Johnson & Snook 1927: 393, figs. 349, 356. — Garth & Abbott 1980: 616, fig. 25.36 — Hart 1982: 236, fig. 98. — Ricketts et al. 1985: 377. — Campos-Gonzalez 1986: 238. — Zmarzly1992: 693, fig. 9. — Jensen 1995: 31, fig. 42.

Diagnosis. Carapace about twice as long as wide, pointed at sides, flattened above, with transverse depression behind median region. Orbits pointed at outer angle. Hands of chelipeds compressed, fingers gaping, especially in adult male, dactyl strongly curved, fingers usually without teeth. Pereopods 2–5 slender, pereopod 4 thickest. Propodus of pereopods 2–5 elongate, dactyl strongly curved, shorter than propodus. Merus of pereopod 4 broad. Dactyl of pereopod 5 slightly exceeding end of merus of pereopod 4 when extended. Carapace length 4.5 mm.

Color in life. Grayish white, pereopods 2–5 often with brownish-tipped ( Schmitt 1921).

Habitat and depth. Usually living in mantle cavity of pelecypods, rarely with tube anemones (order Ceriantharia ); intertidal to 91 m.

Range. Sitka , Alaska to Santa Maria, Baja California, Mexico. Type locality Bodega Bay, California .

Remarks. Juveniles of P. littoralis and P. faba may be nearly impossible to differentiate ( Zmarzly 1992).

References

Campos-Gonzalez, E. (1986) Records and new host of pea crabs (Decapoda: Pinnotheridae) for Baja California, Mexico. Veliger 29: 238 - 239.

Garth, J. S. & Abbott, D. (1980) Brachyura: the true crabs. In: Morris, D., Abbott, D. & Haderlie, E. (Eds). Intertidal Invertebrates of California. Stanford University Press, Stanford, California, pp. 594 - 630.

Hart, J. F. L. (1982) Crabs and their Relatives of British Columbia. British Columbia Provincial Museum Handbook 40, Victoria, 267 pp.

Holmes, S. J. (1894) Notes on west American Crustacea. Proceedings of the California Academy of Sciences, ser. 2, vol. 4, 563 - 588.

Jensen, G. C. (1995) Pacific Coast Crabs and Shrimps. Sea Challengers, Monterey, California, 87 pp.

Johnson, M. E. & Snook, H. J. (1927) Seashore Animals of the Pacific Coast. Dover Publications, New York, reprint 1967, 659 pp.

Rathbun, M. J. (1904) Decapod crustaceans of the northwest coast of North America. Harriman Alaska Expedition, 10, 1 - 219.

Rathbun, M. J. (1917) The grapsoid crabs of America. Bulletin of the United States National Museum, 97, 1 - 445.

Ricketts, E. F., Calvin, J., Hedgpeth, J. W. & Phillips, D. W. (1985) Between Pacific Tides. Stanford University Press, Stanford, California, 5 th ed., 652 pp.

Schmitt, W. L. (1921) The marine decapod Crustacea of California. University of California Publications in Zoology, 23, 1 - 470.

Weymouth, F. W. (1910) Synopsis of the true crabs (Brachyura) of Monterey Bay, California. Leland Stanford Junior University Publications, University series 4, 1 - 64.

Zmarzly, D. (1992) Taxonomic review of pea crabs in the genus Pinnixa (Decapoda: Brachyura: Pinnotheridae) occurring on the California shelf, with descriptions of two new species. Journal of Crustacean Biology, 12, 677 - 713.