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)

  • Oleksandr Holovachov Department of Zoology, Swedish Museum of Natural History, Box 50007, SE–104 05 Stockholm.
DOI: https://doi.org/10.5852/ejt.2017.383
Keywords: morphology, new genus, new species, Diplopeltula, taxonomy

Abstract

Two species of the nematode family Diplopeltidae are described from Skagerrak. The new genus Belgopeltula gen. nov. is proposed for Diplopeltula belgica Vincx & Gourbault, 1992 and is characterised by: amphidial fovea circular in female and double-loop-shaped in male; excretory pore located at the level of cephalic setae bases; oral opening on the dorsal side of the body; pharynx subdivided into strongly muscularised fusiform corpus and weakly muscularised narrow and long postcorpus; female didelphic with antidromously reflexed ovaries; supplements absent. Mudwigglus micramphidium sp. nov. is characterised by: a body of 0.6 mm long; cephalic sensilla 1.5 µm long; amphidial fovea loop-shaped, 8 µm long and 3.5 µm wide; gymnostom without cuticularised ring; tail elongate conoid, with subcylindrical distal part; terminal setae absent; spicules 15 µm long; gubernaculum present; two midventral precloacal setae. It is distinguished from M. macramphidium Leduc, 2013 in having shorter amphidial fovea, shorter spicules and presence of two precloacal setae. Redescription of Diplopeltis cylindricauda Allgén, 1932 is provided based on type material. Diplopeltula minuta Vitiello, 1972 is transferred to the genus Mudwigglus Leduc, 2013. Diplopeltis cylindricauda Allgén, 1932, Diplopeltula laminata Vitiello, 1972 and Diplopeltula cassidaignensis Vitiello, 1972 are transferred to the genus Pseudaraeolaimus Chitwood, 1951.

References

Allgén C. 1932. Weitere Beiträge zur Kenntnis der marinen Nematodenfauna der Campbell-insel. Nyt Magazin for Naturvidenskaberne 70: 97–198.

Boström S. & Holovachov O. 2017. The Swedish marine nematologist Carl Allgén (1886-1960): a bio-bibliography and his collection. Zootaxa 4232: 451–490. https://doi.org/10.11646/zootaxa.4232.4.1

Boucher G. & Helléouët M. 1977. Nématodes des sables fins infralittoraux de la Pierre Noire (Manche occidentale). III. Araeolaimida et Monhysterida. Bulletin du Muséum national d’Histoire naturelle 297: 85–122.

Cobb N.A. 1920. One hundred new nemas. (Type species of 100 new genera). Contributions to a Science of Nematology 9: 217–343.

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

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

Fonseca G. & Bezerra T.N. 2014. 7.15 Order Araeolaimida De Coninck & Schuurmans Stekhoven, 1933. In: Schmidt-Rhaesa A. (ed) Handbook of Zoology. Gastrotricha, Cycloneuralia, Gnathifera. Volume 2: Nematoda: 467–486. de Gruyter, Göttingen.

Gadea E. 1973. Sobre la filogenia interna de los Nematodos. Publicaciones del Instituto de Biología Aplicada 54: 87–92.

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

Gerlach S.A. 1954. Nématodes marins libres des eaux souterraines littorales de Tunisie et d’Algérie. Vie et Milieu 4: 221–237.

Gerlach S.A. 1956. Diagnosen neuer Nematoden aus der Kieler Bucht. Kieler Meeresforschungen 12: 85–109.

Gerlach S.A. 1962. Freilebende Meeresnematoden von den Malediven. Kieler Meeresforschungen 18: 81–108.

Giere O. 2009. Meiobenthology. The Microscopic Motile Fauna of Aquatic Sediments. 2nd edition. Springer-Verlag, Berlin & Heidelberg. https://doi.org/10.1007/978-3-540-68661-3

Holovachov O. & Boström S. 2017. Three new and five known species of Diplopeltoides (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.

Hunt D.J & Palomares-Ruis E. 2012. General morphology and morphometrics of plant-parasitic nematodes. In: Manzanilla-López R.H. & Marbán-Mendoza N. (eds) Practical Plant Nematology: 25–64. Mundi-Prensa, Madrid.

Jensen P. 1978. Four nematoda Araeolaimida from Öresund, Denmark, with remarks on the oesophageal structure in Aegialoalaimus. Cahiers de Biologie marine 19: 221–231.

Juario J.V. 1974. New free-living nematodes from the sublittoral zone of the German Bight. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven 14: 275–303.

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

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

Tchesunov A.V. 1990. A critical analysis of the family Aegialoalaimidae (Nematoda, Chromadoria), trends in evolutionary development of marine nematode pharynx and a proposal of two new families. Zoologicheskii Zhurnal 69: 5–18.

Tchesunov A.V. & Miljutina M.A. 2008. A new free-living nematode Intasia monohystera gen. n., sp. n. (Nematoda, Araeolaimida, Diplopeltidae) from the Barents Sea and the White Sea, with a key to genera of Diplopeltidae. Russian Journal of Nematology 16: 33–48.

Timm R.W. 1961. The marine nematodes of the Bay of Bengal. Proceedings of the Pakistan Academy of Sciences 1: 1–88.

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.

Published
2017-12-19
How to Cite
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). https://doi.org/10.5852/ejt.2017.383
Issue
No. 383 (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)
Section
Zoology
Copyright (c) 2017 Oleksandr Holovachov

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