Neodiplopeltula gen. nov. from the west coast of Sweden and reappraisal of the genus Diplopeltula Gerlach, 1950 (Nematoda, Diplopeltidae)

  • Oleksandr Holovachov Department of Zoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm
  • Sven Boström Department of Zoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm
Keywords: identification key, morphology, revision, SEM, taxonomy

Abstract

The new genus Neodiplopeltula gen. nov. is proposed to accommodate those species from the genus Diplopeltula Gerlach, 1950 that possess the following morphological characters: amphids in the shape of an elongated loop, a well-developed subcylindrical stoma and outstretched ovaries. The genus Diplopeltula is considered genus inquirendum et incertae sedis. Four species placed in Neodiplopeltula gen. nov. are redescribed. The following taxonomic changes are proposed: Neodiplopeltula asymmetrica (Allgén, 1935) gen. et comb. nov.; Neodiplopeltula barentsi (Steiner, 1916) gen. et comb. nov.; Neodiplopeltula bathmanni (Jensen, 1991) gen. et comb. nov.; Neodiplopeltula cuspidiboja (Leduc, 2017) gen. et comb. nov.; Neodiplopeltula indica (Gerlach, 1962) gen. et comb. nov.; Neodiplopeltula intermedia (Gerlach, 1954) gen. et comb. nov.; Neodiplopeltula obesa (Nguyen Vu Thahn, Nguyen Thahn Hien & Gagarin, 2012) gen. et comb. nov.; Neodiplopeltula onusta (Wieser, 1956) gen. et comb. nov.; Neodiplopeltula ovalis (Ditlevsen, 1928) gen. et comb. nov. and Neodiplopeltula tchesunovi (Fadeeva & Mordukhovich, 2013) gen. et comb. nov. New synonyms include: Diplopeltis asymmetricus Allgén, 1935 and Diplopeltis ovalis Ditlevsen, 1928 are synonimised with Neodiplopeltula barentsi (Steiner, 1916) gen. et comb. nov.; Diplopeltula tchesunovi Fadeeva & Mordukhovich, 2013 is synonimised with Neodiplopeltula onusta (Wieser, 1956) gen. et comb. nov.; the male of Diplopeltula cuspidiboja Leduc, 2017 is synonimised with Neodiplopeltula barentsi gen. et comb. nov. and the female with N. bathmanni gen. et comb. nov. A key to the species of Neodiplopeltula gen. nov. is provided.

References

Allgén C. 1935. Die freilebenden Nematoden des Öresunds. Capita Zoologica 6: 1–192.

De Grisse A.T. 1969. Redescription ou modifications de quelques techniques utilisées dans l’étude des nématodes phytoparasitaires. Mededelingen van de Rijksfakulteit voor Landbouwwetenschappen Gent 34: 351–369.

Ditlevsen H. 1928. Free-living marine nematodes from Greenland waters. Meddelelser om Grønland 23 (Suppl.): 199–250.

Fadeeva N. & Mordukhovich V. 2013. Some new and poorly known nematode species from the Sea of Japan. Deep-Sea Research II 86–87: 119–123. https://doi.org/10.1016/j.dsr2.2012.07.044

Gerlach S.A. 1950. Die Diplopeltiden, eine Gruppe freilebender Nematoden. Kieler Meeresforschungen 7: 138–156.

Holovachov O. 2017. Belgopeltula belgica (Vincx & Gourbault, 1992) gen. et comb. nov. and Mudwigglus micramphidium sp. nov. from the west coast of Sweden, and reappraisal of the genus Pseudaraeolaimus Chitwood, 1951 (Nematoda: Araeolaimida: Diplopeltidae). European Journal of Taxonomy 383: 1–21. https://doi.org/10.5852/ejt.2017.383

Holovachov O. & Boström S. 2017. Three new and five known species of Diplopeltoides Gerlach, 1962 (Nematoda, Diplopeltoididae) from Sweden, and a revision of the genus. European Journal of Taxonomy 369: 1–35. https://doi.org/10.5852/ejt.2017.369

Holovachov O., Tandingan De Ley I., Mundo-Ocampo M., Gingold R &, De Ley P. 2009. Nematodes from the Gulf of California. Part 3. Three new species of the genus Diplopeltoides Gerlach, 1962 (Nematoda: Diplopeltoididae) with overviews of the genera Diplopeltis Gerlach, 1962 and Diplopeltula Gerlach, 1950. Russian Journal of Nematology 17: 43–57.

Jensen P. 1991. Nine new and less known nematode species from the deep-sea benthos of the Norwegian Sea. Hydrobiologia 222: 57–76. https://doi.org/10.1007/BF00017500

Leduc D. 2013. Mudwigglus gen. n. (Nematoda: Diplopeltidae) from the continental slope of New Zealand, with description of three new species and notes on their distribution. Zootaxa 3682: 351–370. https://doi.org/10.11646/zootaxa.3682.2.8

Leduc D. 2017. Four new nematode species (Araeolaimida: Comesomatidae, Diplopeltidae) from the New Zealand continental slope. Zootaxa 4237: 244–264. https://doi.org/10.11646/zootaxa.4237.2.2

Maggenti A.R. 2005. Online Dictionary of Invertebrate Zoology. Available from digitalcommons.unl.edu [accesed 13 Aug. 2018].

Seinhorst J.W. 1959. A rapid method for the transfer of nematodes from fixative to anhydrous glycerin. Nematologica 4: 67–69. https://doi.org/10.1163/187529259X00381

Sergeeva N.G. 1977. Free-living nematoda, new for the Black Sea. Vestnik Zoologii 1: 36–44.

Southern R. 1914. Nemathelmaia, Kinorhyncha, and Chaetognatha (Clare Island Survey, Part 54). Proceedings of the the Royal Irish Academy 31: 1–80.

Steiner G. 1916. Freilebende Nematoden aus der Barentssee. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 39: 511–664.

Vincx M. & Gourbault N. 1992. Six new species of the genus Diplopeltula (Nematoda: Diplopeltidae) with remarks on the heterogeneity of the taxon. Hydrobiologia 230: 165–178. https://doi.org/10.1007/BF00036563

Vitiello P. 1972. Sur quelques espèces de Diplopeltula (Nematoda, Araeolaimida). Vie et Milieu 21: 535–544.

Voronov D.A. 1982. [Free-living nematodes of the genus Diplopeltula Gerlach, 1950 (Araeolaimida, Axonolaimidae) from the White Sea.] Sovremennye problemy biogeografii: 189–197. [in Russian.]

Wieser W. 1956. Free-living Nematodes and Other Small Invertebrates of Puget Sound Beaches. University of Washington Press.

Published
2018-08-29
How to Cite
Holovachov, O., & Boström, S. (2018). Neodiplopeltula gen. nov. from the west coast of Sweden and reappraisal of the genus Diplopeltula Gerlach, 1950 (Nematoda, Diplopeltidae). European Journal of Taxonomy, (458). https://doi.org/10.5852/ejt.2018.458