Systellaspis debilis (A. Milne-Edwards, 1881 )

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 47-48

publication ID	11755334
DOI	https://doi.org/10.5281/zenodo.5254878
persistent identifier	https://treatment.plazi.org/id/C5657B52-FFB2-B33C-44D1-F9EFCB71093B
treatment provided by	Felipe (2021-08-24 08:22:12, last updated by Plazi 2023-11-04 15:45:02)
scientific name	Systellaspis debilis (A. Milne-Edwards, 1881 )
status

Treatment

Systellaspis debilis (A. Milne-Edwards, 1881) View in CoL

( Fig. 11E)

Acanthephyra debilis A. Milne-Edwards, 1881: 13 View in CoL .

Systellaspis debilis View in CoL . — Chace 1940: 181, text fig. 51;1986: 65, figs. 34g –i, 35e, f. — Crosnier & Forest 1973: 87, figs. 26b, 27b. — Krygier & Pearcy 1981: 89. — Baba et al. 1986: 90, fig. 50. — Hendrickx & Estrada-Navarrete 1989: 116. — Wicksten 2002: 137.

Diagnosis. Rostrum elongated, much longer than scaphocerite, with 14 dorsal, 9 ventral teeth, acute apex. Carapace with antennal, branchiostegal teeth. Eye pigmented. Stylocerite about as long as eye. Scaphocerite with lateral tooth longer than blade. Third maxilliped about as long as first pereopod. Exopods of third maxilliped, all pereopods about same length. Pereopods 1, 2 short, chelate; pereopods 3, 4 longer, with simple dactyls, pereopod 5 shorter, with paddle-like dactyl, pereopods 3–5 with spinules on propodus, merus, ischium. Abdominal somites with rounded to blunt pleura. Abdominal somite 3 with large posterior dorsal tooth, carina; somite 4 with smaller tooth, carina. Posterior margins of somites 3, 4 armed with spinules. Somite 6 with posterolateral point. Telson nearly as long as uropods, with 5–6 pairs lateral spinules. Carapace length to 17 mm.

Color in life. Adult scarlet-red, appendages tinged with salmon-orange; line of dark photophores along ventrolateral surface of carapace, scattered photophores on lateral surface of carapace and abdominal pleura. Hardy (1970 pl. 17-7) illustrated a juvenile with the anterior part of the body scarlet and the rostrum and posterior parts fading to translucent.

Habitat and depth. Pelagic, 0–1500 m, concentrated at 150 m by night, 650–800 m by day.

Range. Indo-West Pacific, Oregon, Gulf of Mexico , Caribbean Sea, Atlantic Ocean. Type locality Bahamas Channel .

Remarks. This is one of the most common midwater shrimp.

References

Baba, K., Hayashi, K. & Toriyama, M. (1986) Decapod Crustaceans from Continental Shelf and Slope around Japan. Tokyo: Japan Fisheries Resource Conservation Association (Tokyo), 336 pp.

Chace, F. A. Jr. (1940) Plankton of the Bermuda oceanographic expeditions. IX. The bathypelagic caridean Crustacea. Zoologica, 25, part 2 (11), 117 - 209.

Crosnier, A., & Forest, J. (1973) Les Crevetttes Profondes de l ' Atlantique Oriental Tropical. Fauna Tropicale (O. R. S. T. O. M.), 19, 1 - 409.

Hardy, A. H. (1970) The Open Sea: Its Natural History. Part I: The World of Plankton. Houghton Mifflin, Boston, 3 rd printing, 335 pp.

Hendrickx, M. E. & Estrada-Navarrete, F. D. (1989) A checklist of the species of pelagic shrimps (Penaeoidea and Caridea) from the eastern Pacific, with notes on their geographic and depth distribution. California Cooperative Fisheries Investigations Report, 30, 104 - 121.

Krygier, E. E. & Pearcy, W. G. (1981) Vertical distribution and biology of pelagic decapod crustaceans off Oregon. Journal of Crustacean Biology, 1, 70 - 95.

Milne-Edwards, A. (1881) Description de quelques Crustaces Macroures provenant des grandes profoundeurs de la Mer des Antilles. Annale s des Sciences Naturelles, Zoologie (Paris), ser. 6, 11 (4), 1 - 16.

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.