Cyclocaris Stebbing 1888

• Main Authors: Horton, Tammy, Thurston, Michael H.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Cyclocaris; Antarctic; South Orkney Islands; Signy Island; Seta; Lowry; Chevreux; Thurston; Antarc*; British Antarctic Survey; Cyclocaris guilelmi
• Online Access: https://dx.doi.org/10.5281/zenodo.4915305; https://zenodo.org/record/4915305

Genus Cyclocaris Stebbing, 1888 Cyclocaris Stebbing, 1888: 664.— Stebbing, 1906:30.— Barnard, 1969: 338–339.— Barnard & Karaman, 1991: 479.— Lowry & Stoddart, 2011: 58–60. Type species. Cyclocaris tahitensis Stebbing, 1888, original designation. Diagnosis. As for the family. Maxilla 1 palp apically strongly tridentate, each tooth crowned with a robust seta. Species composition. Cyclocaris tahitensis Stebbing, 1888; Cyclocaris guilelmi Chevreux, 1899; Cyclocaris lowryi sp. nov. Cyclocaris franki sp. nov. Remarks. The Cyclocaridae most closely resemble the Cebocaridae and can be distinguished by the head being only slightly deeper than long; the presence of eyes; the more strongly asymmetric incisors; the setose molar and the simple non-prehensile pereopods (Lowry & Stoddart, 2011). C. guilelmi is unusual in having eyes that cover most of the head and that are not destroyed by fixation and preservation. In the remaining three species eyes fade or disappear completely following preservation as was reported for C. tahitensis (Lowry & Stoddart, 2011). The two new species each possess four irregular and somewhat variable ocular patches; bright red in the case of C. franki sp. nov. (Figure 2). In common with some other lysianassoids, the bright red pigment found in the two new species is highly labile in alcohol (Thurston, 1974; Thurston & Bett, 1993). Cyclocarids are necrophages to a greater or lesser extent; all species have been caught in baited traps. In common with otherwise unrelated necrophagous lysianassoids such as Alicella , Eurythenes and some members of the Uristidae, Cyclocaris species share a total loss of the triturating surface on the mandibular molar and a shortening of the inner plate of maxilla 2 (De Broyer & Thurston, 1987; Stoddart & Lowry, 2004; Lowry & Stoddart, 2011; unpublished observations). When fully gorged, the hugely extended sternites of the pereon make specimens of Cyclocaris very obvious in trap catches (Figure 3). : Published as part of Horton, Tammy & Thurston, Michael H., 2014, A revision of the bathyal and abyssal necrophage genus Cyclocaris Stebbing, 1888 (Crustacea: Amphipoda: Cyclocaridae) with the addition of two new species from the Atlantic Ocean, pp. 507-527 in Zootaxa 3796 (3) on pages 509-511, DOI: 10.11646/zootaxa.3796.3.6, http://zenodo.org/record/4915303 : {"references": ["Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 76. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76, Zoology. Vol. 29. Eyre & Spottiswoode, London, 1737 pp., 210 plates.", "Stebbing, T. R. R. (1906) Amphipod I. Gammaridea. Das Tierreich, 21, Friedlander und Sohn, Berlin, 806 pp.", "Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, no. 271, 535 pp.", "Barnard J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement 13, 2 (2), 419 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367", "Lowry, J. K. & Stoddart, H. E. (2011) The new deep-sea families Cebocaridae fam. nov., Cyclocaridae fam. nov. and Thoriellidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea). Zootaxa, 2747, 53 - 68.", "Chevreux, E. (1899) Sur quelques interessantes especes d'amphipodes provenant de la derniere campagne du yacht Princesse Alice. Bulletin de la Societe Zoologique de France, 24, 147 - 152.", "Thurston, M. H. (1974) The Crustacea Amphipoda of Signy Island, South Orkney Islands. British Antarctic Survey Scientific Reports, 71, 1 - 133.", "Thurston, M. H. & Bett, B. J. (1993) Eyelessness in marine gammaridean Amphipoda (Crustacea): geographical, bathymetric and taxonomic considerations. Journal of Natural History, 27 (4), 861 - 881. http: // dx. doi. org / 10.1080 / 00222939300770531", "De Broyer, C. & Thurston, M. H. (1987) New Atlantic material and redescription of the type specimens of the giant abyssal amphipod Alicella gigantea Chevreux (Crustacea). Zoologica Scripta, 16, 335 - 350. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1987. tb 00079. x", "Stoddart, H. E. & Lowry, J. K. (2004) The deep-sea lysianassoid genus Eurythenes (Crustacea, Amphipoda, Eurytheneidae n. fam.). Zoosystema, 26, 425 - 468."]}