Eualus macrophthalmus (Rathbun, 1902)

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 78

publication ID	11755334
DOI	https://doi.org/10.5281/zenodo.5254942
persistent identifier	https://treatment.plazi.org/id/C5657B52-FFD1-B35E-44D1-FBB8C9E50DF0
treatment provided by	Felipe (2021-08-24 08:22:12, last updated by Plazi 2023-11-04 15:45:02)
scientific name	Eualus macrophthalmus (Rathbun, 1902)
status

Treatment

( Fig. 19B, C)

Spirontocaris macrophthalma Rathbun, 1902a: 900 ; 1904: 105, fig. 48. — Schmitt 1921: 72, fig. 49.

Eualus macrophthalmus . — Holthuis 1947: 11. — Kozloff 1974: 166. — Word & Charwat 1976: 105. — Butler 1980: 189, pl. 8A. — Wicksten 1989b: 312; 1990b: 593; 2002: 137. — Chace 1997: 43. — Jensen 2004: 468.

Diagnosis. Rostrum deep, reaching beyond antennular peduncle, with 10–14 dorsal, 1–4 ventral teeth, apex acute. Second and third segments of antennular peduncle with terminal spines, stylocerite not reaching end of first segment. Carapace with pterygostomian tooth minute or absent. Pereopod 1 moderately large, pereopod 2 slender. Pereopods 3–5 long, slender, with slender, simple dactyls. Merus of pereopod 3, with 5 or 6 spines; pereopod 4, with 5 or 6 spines; pereopod 5, with 4 spines. Pleura of abdominal somites 1–4 rounded, 5 with ventral point. Telson with 5 or 6 pairs dorsolateral spines. Male total length to 43 mm, female to 71 mm.

Color in life. Pale yellow with red speckling ( Butler 1980).

Habitat and depth. The species may be pelagic ( Butler 1980), 110–1163 m ..

Range. Unalaska to Point Sur, California. Type locality off Tawit Head , Washington . Word & Charwat (1976) erroneously reported it from Tanner Bank. The specimen in question was collected with a "Tanner trawl" off Monterey County, California .

References

Butler, T. H. (1980) Shrimps of the Pacific Coast of Canada. Canadian Bulletin of Fisheries and Aquatic Science, 202, 1 - 280.

Chace, F. A. Jr. (1997) The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 1907 - 1910, Part 7: families Atyidae, Eugonatonotidae, Rhynchocinetidae, Bathypalaemonellidae, Processidae, and Hippolytidae. Smithsonian Contributions to Zoology, 587, 1 - 106.

Holthuis, L. B. (1947) The Decapoda of the Siboga expedition Part IX: the Hippolytidae and Rhynchocinetidae. Siboga Expeditie, 39 a (8), 1 - 100.

Jensen, G. C. (2004) Status of Eualus pusiolus in the northeastern Pacific, with a description of a new species of Eualus (Decapoda: Hippolytidae). Journal of Crustacean Biology, 24, 463 - 469.

Kozloff, E. N. (1974) Keys to the Marine Invertebrates of Puget Sound, the San Juan Archipelago, and Adjacent Regions. University of Washington Press, Seattle, 226 pp.

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.

Wicksten, M. K. (1989 b) Ranges of offshore decapod crustaceans in the eastern Pacific Ocean. Transactions of the San Diego Society of Natural History, 21, 291 - 316.

Wicksten, M. K. (1990 b) Key to the hippolytid shrimp of the eastern Pacific Ocean. United States Fishery Bulletin, 88, 587 - 598.

Wicksten, M. K. (2002) Midwater decapods of the northeastern Pacific. In: Hendrickx, M. E. (Ed.) Contributions to the Study of East Pacific Crustaceans. Vol. 1. Universidad Nacional Autonoma de Mexico, Mexico, D. F., pp. 127 - 144.

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