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Type Specimens of Benthic Nemerteans (Nemertea, Enopla) in the Zoological Institute (St

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Type Specimens of Benthic Nemerteans (Nemertea, Enopla) in the Zoological Institute (St © Zoological Institute, St. Petersburg, 2008 Type specimens of benthic nemerteans (Nemertea, Enopla) in the Zoological Institute (St. Petersburg) E.M. Chaban & A.V. Chernyshev Chaban, E.M. & Chernyshev, A.V. 2008. Type specimens of benthic nemerteans (Nemertea, Enopla) in the Zoological Institute (St. Petersburg). Zoosystematica Rossica, 17(2): 53-60. At present, type specimens of 46 species of nemerteans from seven orders are deposited in the collection of the Zoological Institute, St. Petersburg. Here presented data on the type specimens which include full information on localities and current status, and taxonomic remarks on some species. E.M. Chaban, Zoological Institute, Russian Academy of Sciences, Universitetskaya nab., 1, St. Petersburg, 199034, Russia. E-mail: [email protected] A.V. Chernyshev, A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, ul. Palchevskogo 17, Vladivostok 690041, Russia. E-mail: [email protected] Since 1870, Russian authors have described about Holotype. Specimen in 70% alcohol, No. 800, 100 species and subspecies of the benthic nem- Sea of Okhotsk, Sakhalin I., Aniwa Bay (off erteans. Unfortunately, we know nothing about Ozyorsk), tidal zone, summer of 1955, coll. types of the species described by V.N. Ul’yanin, O.B. Mo kiyevskiy. V.I. Chernyavskiy, A.P. Fedchenko, Ya.N. Leb- Paratype. Immature F (fragment of body in edinskiy, T.E. Timofeyev, and G.A. Schmidt. alcohol and 16 slides with serial transversal Types of nearly all benthic species described by sections), No. 770, Sea of Okhotsk, Sakhalin I., P.V. Ushakov and V.S. Korotkevitsch are kept in Aniwa Bay, littoral zone, summer of 1955, coll. the collection of the Zoological Institute (ZIN). O.B. Mokiyevskiy. A.C. Chernyshev provided type specimens of four species, which were described by him between Order TUBULANIFORMES Chernyshev, 1995 1993 and 2003. Family Tubulanidae Bürger, 1904 (1874) Pavel Ushakov described 14 nemertean spe- Carinina littorea Korotkevitsch, 1982: 13-15, cies from the White, Barents, and Japan seas in fi g. 1. 1926-1928. He did not designate holotypes in Holotype. Specimen in 70% alcohol, No. 813, his papers. He commonly made only the sections Sea of Okhotsk, Sakhalin I., Aniwa Bay, Busse of the anterior part (to the nephridial region) of Inlet, tidal zone, sand, 11 August 1947, coll. O.A. nemertean body; some slides were covered not Scarlato. with glasses, but with celloidin fi lm. Most of the Remark. The internal morphology of this spe- serial sections are now in a very poor condition cies was described on the basis of the dissected and require restoration. holotype, therefore the intraepithelial position of Vera Korotkevich [Korotkevitsch], who worked the lateral nerve cords in C. littorea is doubtful. in the Zoological Institute from 1949 to 1983, The position of the lateral blood vessels is typical described 26 species of benthic nemerteans. She for the genus Tubulanus. We regard this species used a unique and now lost technique of staining as a nomen dubium. serial sections known as “calcic hematoxylin”. Most serial sections are in a good condition and Family Callineridae Bergendal, 1901 can be used for more detailed investigations. Since Callinera zhirmunskyi Chernyshev, 2002: the original descriptions of many species contain 143-145, fi g. a-g. incomplete data on type specimens, the following Holotype. Fragment of body in 70% alcohol, list includes full information on localities and No. 1057, Pacifi c Ocean, vicinity of Vancouver taxonomic comments on some species. City, depth 15 m, 1 June 1999, coll. T. Belan. Remark. The slides with serial transversal sec- Order ARCHINEMERTEA Iwata, 1960 tions of the anterior part of the holotype body are Family Cephalotrichidae McIntosh, 1873-1874 kept in the Zoological Museum of the Far East Procephalothrix mokievskii Korotkevitsch, National University, Vladivostok (Chernyshev & 1982: 21-25, fi gs. 8-15. Volnenko, 2008). 54 E.M. Chaban & A.V. Chernyshev: Type specimens of nemerteans • ZOOSYST. ROSSICA Vol. 17 Order HUBRECHTIIFORMES Chernyshev, cylindrical, proboscis without muscular crosses, 1995 rhynchocoel with short ventral pouches just be- Family Hubrechtellidae Chernyshev, 2003 hind the brain, thin cutis with longitudinal and Hubrechtella julia Chernyshev, 2003a: 368- circular muscle fi bres, longitudinal muscle fi bres 370, fi g. a, b, c. between rhynchocoel and foregut interwoven Paratype. Specimen in 70% alcohol, No. 1058, with circular muscle fi bres of rhynchocoel wall, Sea of Japan, Peter the Great Bay, Vostok Bay, vascular plexus absent in foregut region, foregut depth 5-7 m, mud, 22 September 2000, coll. A.V. with subepithelial glands. This form should be Chernyshev, A.V. Martynov. regarded as a species inquirenda. Lineus maris-albi Ushakov, 1926: 52-53, 68, Order CARINOMIFORMES Chernyshev, 1995 pl. 1 (fi g. 2). Family Carinomidae Bürger, 1897-1907 Holotype (by monotypy). Body fragment in Carinoma uschakovi Chernyshev, 1999: 1276- 70% alcohol and 4 slides with transversal sections, 1281, fi gs. 1, 1-2; 2, 1-5; 3, 1, 3-5. No. 120, White Sea, Kovda, 19 August 1921, coll. Holotype. 7 slides with serial transversal sec- K.K. Saint-Hilaire. tions, No. 2, White Sea, 66º28´N 34º15´E, depth Remark. The generic position of this species 325.7 m, silty mud, Research Vessel “Murman”, can not be determined because the proboscis has station 18, 6 August 1922, coll. O.L. Retovsky. been lost. The transversal serial sections of the Statolitonemertes sachalinica Korotkevitsch, holotype are in very poor condition, and we could 1982: 17-21, fi gs. 3-7. fi nd little information on the internal morphol- Paratype. Immature F (9 slides with transversal ogy: brain with both inner and outer neurilemma, sections), No. 771, Sea of Okhotsk, Terpeniya Bay, dermal glands do not penetrate outer longitudinal 49º05´N 143º04´E, depth 12 m, sand, Research body muscles, subepithelial glands well devel- Vessel “Toporok”, station 159, 2 October 1949, oped around foregut, longitudinal muscles pres- coll. V.A. Skalkin. ent between rhynchocoel and foregut, circular Remark. Redescribed by Chernyshev (1999a: splanchnic muscles distinct. This form should be 1281-1283, fi gs. 1, 3-5; 2, 6; 3, 2, 6). regarded as a species inquirenda. Current status. Lineus marisalbi Ushakov, 1926 Order HETERONEMERTEA Bürger, 1892 (see Gibson, 1995: 399). Family Lineidae McIntosh, 1873-1874 Lineus saint-hilairi Ushakov, 1926: 53, 54, Lineus gurjanovae Korotkevitsch, 1977b: 29- 69. 33, fi g. 3. Holotype (by monotypy). 3 fragments and pro- Paratype. Specimen in alcohol, No. 1019, White boscis in 70% alcohol, No. 121, White Sea, Kovda, Sea, Chupa Bay, Kruglaya inlet, depth 3-8 m, silt 16 August 1921, coll. K.K. Saint-Hilaire. with semi-decomposed wood bits and algae, 28 Remark. This species is inadequately described July 1975, coll. V.S. Korotkevitsch. and of dubious validity. It is similar to Poseidon Remark. We examined the Korotkevitsch’s un- ruber, but possesses unusual dark blue body published drawings of both Lineus gurjanovae and colour of living specimen. Slides with serial sec- L. uschakovi, and identifi ed the type specimens of tions have not been found in the ZIN collection. these species as Poseidon viridis. Current status. Lineus sainthilairi Ushakov, Current status. Synonym of Poseidon viridis 1926 (see Gibson, 1995: 402). (Müller, 1774) (Chernyshev, 2004b: 790). Lineus uschakovi Korotkevitsch, 1977b: 33- Lineus kolaensis Ushakov, 1928a: 57-58, 64, 37, fi gs 4, 5. 65, pl. 1 (fi g. 1, 4). Holotype. Specimen in alcohol, No. 1024, White Syntypes. Two body fragments, No. 118, Barentz Sea, Chupa Bay, Kruglaya inlet, Fucus zone, sand Sea, Kola-Fjord, Tralovaya yama, 30.06.1924; with gravel, under stone, 10 July 1975, coll. V.S. specimen in 70% alcohol, No. 119, Barentz Sea, Korotkevitsch. Kolsky meridian, 75ºN, depth 165 m, station 12, Paratypes. Specimen in alcohol, No. 1025, 1925, coll. N.P. Tanasiychuk; F (fragment in 70% White Sea, Chupa Bay, Kruglaya inlet, Fucus alcohol not good condition and 3 slides with trans- zone, sand with gravel, under stone, 17 July 1975, versal sections), No. 801, Barentz Sea, Kolsky coll. V.S. Korotkevitsch; specimen in alcohol, No. meridian, 69º30´N, depth 258 m, May 1924. 1027, White Sea, Chupa Bay, Levaya inlet, Fucus Remark. This species does not belong to the zone, 25 July 1975, coll. V.S. Korotkevitsch. genus Lineus, because it possesses three muscular Remark. Specimen No. 1027 was treated as a layers, two longitudinal and one circular layer, paratype in the legend to drawings (Korotkevitsch, in the proboscis. Unfortunately, the transversal 1977b: fi gs 4, G, H, I, K). serial sections of the holotype are in very bad This species was synonymized with Poseidon condition, and we could fi nd little information viridis (Müller, 1774) by Chernyshev (2004b: on the internal morphology of this species: body 790). ZOOSYST. ROSSICA Vol. 17 • E.M. Chaban & A.V. Chernyshev: Type specimens of nemerteans 55 Micrura lithotamnii Ushakov, 1928b: 419-420, developed subepithelial glands and splanchnic pl. 4 (fi g. 15). muscles (circular and longitudinal). This form Syntypes. Specimen in alcohol, No. 50, Barentz should be regarded as a species inquirenda. Sea, Kola-Fjord, Lithothamnion near Sizyi Cape, Cerebratulus kovalewskii Zernov, 1913: 214. 1923; 4 specimens and 1 fragment in alcohol and Cerebratulus kowalewskii Gibson, 1995: 336- 2 slides with transversal sections noted “type”, 337 (nomen nudum). No. 51, Barentz Sea, Kola-Fjord, Lithothamnion Syntypes. Two specimens in alcohol, No. 89, near Sizyi Cape, 1923; 3 specimens in alcohol, Black Sea, Crimea, Reid near “Hollandia”, clay, No. 52, Barentz Sea, Kola-Fjord, Lithothamnion 15 July 1898, coll. S.A. Zernov; specimen in near Sizyi Cape, 5 September 1922. alcohol and a fragment with the head, No. 308, Remark. This species does not apparently be- Black Sea, Crimea, from Nikita Cape to Aju-Dag, long to the genus Micrura, because it possesses 18.2-40 m, Research Vessel “Meotida”, station two longitudinal muscular layers in the proboscis.
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