Ascidonia californiensis (Rathbun, 1902)

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 52

publication ID	11755334
DOI	https://doi.org/10.5281/zenodo.5254893
persistent identifier	https://treatment.plazi.org/id/C5657B52-FFAF-B320-44D1-FB20C9230CB7
treatment provided by	Felipe (2021-08-24 08:22:12, last updated by Plazi 2023-11-04 15:45:02)
scientific name	Ascidonia californiensis (Rathbun, 1902)
status

Treatment

Ascidonia californiensis (Rathbun, 1902) View in CoL

( Fig. 13A, B)

Pontonia californiensis Rathbun, 1902a: 902 View in CoL ; 1904: 33, fig. 11. — Schmitt 1921: 38, fig. 23. — Holthuis 1951: 145, pl. 46, figs. a–i, pl. 47, figs. a–c. — Word & Charwat 1976 b: 169. — Standing 1981: 778. — Wicksten 1989a: 18.

Ascidonia californiensis View in CoL . — Fransen 2002: 203, figs. 129–137.

Diagnosis. Rostrum about as long as first segment of antennular peduncle, flattened, without teeth. Carapace without teeth. Stylocerite short, blunt, first segment of antennular peduncle with very small distolateral spine. Scaphocerite oval in shape, blade about as long as inwardly curved lateral tooth. Pereopod 1 short, slender, chelate. Pereopod 2 more robust, unequal in size, shape; larger chela with 2 teeth closing against each other on dactyl, propodus; smaller chela without teeth, fingers slender, gaping. Pereopods 3–5 with hooked, biunguiculate dactyls. Abdominal pleura rounded, may be widely spread in ovigerous female. Telson with 2 pairs large dorsolateral spines, 3 pairs small terminal spines. Total length to 29 mm.

Color in life. Yellowish white or dull orange brown.

Habitat and depth. Subtidal rocky areas, commensal in ascidians, to 55 m.

Range. Carmel, Santa Cruz and Santa Rosa Is., off Palos Verdes Point , California . Type locality off Santa Cruz I., California.

Remarks. This symbiotic shrimp has been found in the branchial basket of the large solitary ascidian Ascidia vermiformis .

References

Fransen, C. H. (2002) Taxonomy, phylogeny, historical biogeography, and historical ecology of the genus Pontonia Latreille (Crustacea: Decapoda: Caridea; Palaemonidae). Zoologische Verhandelingen Uitgegeven door het Rijksmuseum van Natuurlijke Historie te Leiden, 336, 1 - 433.

Holthuis, L. B. (1951) A general revision of the Palaemonidae (Crustacea Decapoda Natantia) of the Americas. I. The subfamilies Euryrhynchinae and Pontoniinae. Allan Hancock Foundation Occasional Paper, 11, 1 - 332.

Rathbun, M. J. (1902 a) Descriptions of new decapod crustaceans from the west coast of North America. Proceedings of the United States National Museum, 24, 885 - 905.

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

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

Standing, J. D. (1981) Occurrences of shrimps (Natantia: Penaeidea and Caridea) in central California and Oregon. Proceedings of the Biological Society of Washington, 94, 774 - 786.

Wicksten, M. K. (1989 a) A key to the palaemonid shrimp of the eastern Pacific region. Bulletin of the Southern California Academy of Sciences, 88, 11 - 20.

Word, J. & Charwat, D. (1976) Invertebrates of Southern California Coastal Waters. II. Natantia. Southern California Coastal Water Research Project, El Segundo, California. 238 pp.