Onchnesoma steenstrupii subsp. steenstrupii Koren & Danielssen 1875

• Main Authors: Açik, S., Murina, G. V., Çinar, M. E., Ergen, Z.
• Format: Text
• Language: unknown
• Published: Zenodo 2005
• Subjects: Biodiversity; Taxonomy; Animalia; Sipuncula; Sipunculidea; Golfingiiformes; Phascoliidae; Onchnesoma; Onchnesoma steenstrupii; Onchnesoma steenstrupii steenstrupii koren & danielssen, 1875; Cutler; Ergen; Indian; Koren; Pacific; Ramos; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5659370; https://zenodo.org/record/5659370

Onchnesoma steenstrupii steenstrupii Koren & Danielssen, 1875 Onchnesoma steenstrupii steenstrupii : Saiz Salinas & Villafranca Urchegui 1990: 1164; Cutler 1994: 138 –139; Pancucci­Papadopoulou et al . 1999: 68–69, fig. 23. Onchnesoma steenstrupii : Stephen & Edmonds 1972: 163 –164, figs 19 a–c; Murina & Zavodnik 1985 / 1986: 61–62, fig. 24; Saiz Salinas 1993 b: 113 –115, fig. 59. Material examined: ESFM – SIP / 97 – 15, T 7, trawl, start: 35 ° 40.3 'N – 34 ° 39.1 'E, finish: 35 ° 39.7 'N – 34 ° 37.8 'E, 16 May 1997, 275– 337 m, mud, 4 specimens; ESFM – SIP / 97 – 14, D 10, dredge, 35 °08.9'N – 33 ° 58.6 'E, 19 May 1997, 92 m, mud, 1 specimen. Remarks: Body pear­shaped, or barrel­shaped. Trunk spherical, various coloured: grey, orange, rusty red. In a few specimens, introvert partly reddish in colour. Trunk 0.8–1.5 mm long, 0.6–1.1 mm wide. Introvert partly everted, 0.3–6.7 mm long, 0.2–0.5 mm wide. When fully extended, introvert 6 times trunk length. Small wart­like papillae on surface of trunk; 10–18 µm long, 13–35 µm in diameter. Posterior part of trunk with 22–24 longitudinal keel­like structures. Chitin plate including of these keel­like structures 15–33 µm long. Inner layer of musculature continuous. Spindle and wing muscle absent. Anus located near mouth. Intestine with several coils. Only one retractor attached at posterior part of body. Caudal end of body sightly pointed. The nephridia single, elongate. Oral disc couldnt be observed owing to the retraction of their introverts. Some specimens with eggs in coelom cavity, elliptical; longer axis 95–148 µm in diameter, smaller axis 50–115 µm in diameter. Distribution: Common in the North Atlantic, also present in the southeastern Atlantic, higher latitudes of the western Pacific and southwestern Indian Ocean, Mediterranean Sea (Cutler 1994). Depth range: 0–3362 m (Saiz Salinas 1988 b). : Published as part of Açik, S., Murina, G. V., Çinar, M. E. & Ergen, Z., 2005, Sipunculans from the coast of northern Cyprus (eastern Mediterranean Sea), pp. 1-23 in Zootaxa 1077 on pages 11-12, DOI: 10.5281/zenodo.170329 : {"references": ["Saiz Salinas, J. I. & Villafranca Urchegui, L. (1990). Sipuncula from the Alboran Sea and Ibero- Moroccan Bay. Journal of Natural History, 24, 1143 - 1177.", "Cutler, E. B. (1994) The Sipuncula. Their Systematics, Biology and Evolution. Ithaca: Comstock Publishing Associates, 433 pp.", "Stephen, A. C. & Edmonds, S. J. (1972) The Phyla Sipuncula and Echiura. London: Trustees of the British Museum (Natural History), 528 pp.", "Murina, G. V. V. & Zavodnik, D. (1985 / 1986) Sipuncula of the Adriatic Sea. Thalassia Jugoslavica, 21 / 22, 23 - 73.", "Saiz Salinas, J. I. (1993 b) Sipuncula. In: Ramos M. A. et al. (Ed.), Fauna Iberica, vol. 4, Museo Nacional de Ciencias Naturales CSIC, Madrid, 200 pp.", "Saiz Salinas, J. I. (1988 b) Sipunculiden (Sipuncula) des ostlichen Nordatlantik, gesammelt wahrend der Fahrten des FS Meteor. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 85, 7 - 23."]}