Pinnixa schmitti Rathbun, 1918

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 255-256

publication ID	11755334
DOI	https://doi.org/10.5281/zenodo.5255368
persistent identifier	https://treatment.plazi.org/id/C5657B52-FF62-B3EC-44D1-FA2DC9160A13
treatment provided by	Felipe (2021-08-24 08:22:12, last updated by Plazi 2023-11-04 15:45:02)
scientific name	Pinnixa schmitti Rathbun, 1918
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Pinnixa schmitti Rathbun, 1918 View in CoL

( Fig. 59A)

Pinnixa schmitti Rathbun, 1918: 162 View in CoL , pl. 35, figs. 6,7, 9; text fig. 101. — Schmitt 1921: pl. 42, figs. 7–9, text fig. 157. — Schmitt et al. 1973: 120. — Garth & Abbott l980: 617. — Wicksten 1980c: 360.— Hart 1982: 244, fig. 102. — Ricketts et al. 1985: 387. — Zmarzly 1992: 702, figs. 13, 14. — Campos-Gonzalez 2007: 646, pl. 325 B3.

Diagnosis. Carapace 1.8–2.2 times wider than long, laterally truncate; with prominent ridge of small, tightly packed granules curving along dorsal surface ending at hepatic region. Numerous scattered granules along frontolateral parts of carapace. Perimeter of dorsal carapace pitted. Gastric region with transverse depression. Palm of chela swollen, upper, lower surfaces sinuous to slightly convex; outer, upper surfaces granulate in female, shiny, smooth in mature male. Apices of fingers of chela curving inward, without gape in female, with small gape in male. Inner margin of dactyl with small proximal tooth, fixed finger with several small teeth toward proximal end. Carpus of female cheliped scalloped. Pereopods 2–5 setose, with relatively long, slender dactyls. Rows of granules on merus of pereopods 2–5, also on carpus, propodus of pereopods 4, 5. Pereopod 4 longest, pereopod 5 reaching carpus of pereopod 4. Carapace length 5 mm.

Color in life. Not reported.

Habitat and depth. In sand, common in bays, symbiotic with echiuroids, holothuroids, polychaetes, callianassids, rarely ophiuroids; intertidal zone to 146 m

Range. Port Levasheff , Unalaska, Alaska to San Diego, California. Type locality San Francisco Bay , California .

References

Campos-Gonzalez, E. (2007) Key to Pinnotheridae. In: Carlton, J. T. (Ed.) The Light and Smith Manual: Intertidal Invertebrates from Central California to Oregon. University of California Press, Berkeley, 4 th ed., 643 - 646.

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

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.

Schmitt, W. L., McCain, J. C., & Davidson, E. D. (1973) Crustaceorum Catalogus. Part 3. Decapoda I, Brachyura 1. Fam. Pinnotheridae. Dr, W. Junk B. V., The Hague, the Netherlands, 160 pp.

Wicksten, M. K. (1980 c) Mainland and insular assemblges of benthic decapod crustaceans of southern California. In: Power, D. M. (Ed). The California Islands: Proceedings of a Multidisciplinary Symposium. Santa Barbara Museum of Natural History, Santa Barbara, California, pp. 357 - 367.

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.