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Inland Water Biology

, Volume 12, Issue 1, pp 21–31 | Cite as

Two New Species of Free-Living Nematodes of the Family Linhomoeidae (Nematoda, Monhysterida) from Mangrove Forests in Vietnam

  • V. G. GagarinEmail author
BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS
  • 13 Downloads

Abstract

An illustrated description of two species of free-living nematodes of the family Linhomoeidae Filipjev, 1922, new to science, found in the sediments of a thick mangrove forest in the Yên River, Vietnam, is presented. Desmolaimus minor sp. n. is morphologically similar to D. calvus Gerlach, 1956, but has a shorter body, two-separate internal cavity of pharynx, and setiform labial and cephalic sensilla. A review of species of the genus Desmolaimus de Man, 1888 is made, and a pictorial key to determinate valid species of this genus is provided. Terschellingia yenensis sp. n. is similar to T. lissa Timm, 1962 and T. longissimicaudata Timm, 1962. It differs from T. lissa by the presence of precloacal supplements in males, the presence of cervical setae, a longer tail, and shorter spicules; it differs from T. longissimicaudata by a comparatively longer tail, shorter spicules, and a longer dorsal apophysis of gubernaculum.

Keywords:

Vietnam mangrove forests Yên River free-living nematodes Desmolaimusminor sp. n. Terschellingia yenensis sp. n. 

Notes

ACKNOWLEDGMENTS

This work was financially supported by the National Fund for Science and Technology Development (NAFOSTED) of Vietnam, grant no. 106.12-2012.31.

COMPLIANCE WITH ETHICAL STANDARDS

Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Papanin Institute for Biology of Inland Waters, Russian Academy of SciencesBorokRussia

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