Theristus coralis sp. n. and Thalassomonhystera gracilima sp. n. (Nematoda, Monhysterida) from coral reef off the coast of Vietnam
DOI:
https://doi.org/10.33910/2686-9519-2023-15-2-401-410Keywords:
free-living marine nematodes, morphology, new speciesAbstract
Two new nematode species of the order Monhysyterida from coral reef off the coast of Vietnam are described and illustrated. Theristus coralis sp. n. is morphologically similar to Th. macroflevensis Gerlach, 1954 and Th. metaflevensis Gerlach, 1955 and differs from both species by presence of cardial glands and posterior sack of uterus, longer pharynx, shorter gubernaculum and closer to anterior body end located vulva. Thalassomonhystera gracilina sp. n. resembles Th. tasmaniensis (Allgen, 1927) but has longer and thinner body, longer tail in females and longer and different structures of spicules and a different structure of stoma.
References
Allgen, C. (1927) Freilebende marine Nematoden von der Kuste Tasmaniens. Zologischer Anzeiger, vol. 73, no. 9 (10), pp. 198−217. (In German)
Gagarin, V. G. (2018) An annotated checklist of the free-living nematodes from mangrove thickets of Vietnam. Zootaxa, vol. 4403, no. 2, pp. 261−288. https://doi.org/10.11646/zootaxa.4403.2.3 (In English)
Gagarin, V. G. (2021) Microlaimus capitatus sp. n. and Dichromadora simplex Timm, 1961 (Nematoda, Chromadorea) from the coast of Vietnam. Zootaxa, vol. 4732, no. 2, pp. 323−331. https://doi.org/10.11646/zootaxa.4732.2.7 (In English)
Gerlach, S. A. (1954) Freilebende Nematoden aus der Lagoa Rodrigo der Freitas (Rio de Janeiro). Zoologischer Anzeiger, vol. 153, pp. 135−143. (In German)
Gerlach, S. A. (1955) Zur Kenntnis der freilebenden marinen Nematoden von san Salvador. Zeitschrift fur Wissenschfliche Zoologie, vol. 158, no. 2-4, pp. 249−303. (In German)
Nguyen Dinh Tu, Gagarin, V. G. (2017) Free-living nematodes from mangrove forest in the Yen River Estuary (Vietnam). Inland Water Biology, vol. 10, no. 3, pp. 266−274. https://doi.org/10.1134/S1995082917030129 (In English)
Nguyen Dinh Tu, Nguyen Vu Thanh (2008) Two new marine nematode species of the family Comesomatidae Filipjev, 1918 (Nematoda: Chromadorida) from Halong Bay, Vietnam. Journal of Biology (Hanoi), vol. 30, no. 1, pp. 12−21. https://doi.org/10.15625/0866-7160/v30n1.5408 (In English)
Nguyen Dinh Tu, Smol, N., Vanrensel, A., Nguyen Vu Thanh (2011) Six new species of the genus Onyx Cobb, 1891 (Nematoda, Desmodorida) from coastal areas in Vietnam. Russia Journal of Nematology, vol. 19, pp. 1−20. (In English)
Nguyen Vu Thanh, Gagarin, V. G. (2013) Three new species of nematodes (Nematoda, Enoplida) from coastal waters of Vietnam. Russian Journal of Marine Biology, vol. 39, pp. 420−428. (In English)
Phan Ke Long, Nguyen Ding Tu, Gagarin, V. G. (2021) Daptonema paramonovi sp. n. (Nematoda, Monhysterida) from a mangrove habitat in Vietnam. Biology Bulletin, vol. 48, no. 8, pp. 1170−1175. https://doi.org/10.1134/s1062359021080203 (In English)
Seinhorst, J. V. (1959) A rapid method to the transverse of nematodes from fixative to anhydrous glycerin. Nematologica, vol. 4, pp. 67−69. (In English)
Tchesunov, A. V., Nguyen Vu Thanh, Nguyen Ding Tu (2014) A review of the genus Litinium Cobb, 1920 (Nematoda, Enoplida, Oxystominidae) with descriptions of four new species from two constructing habitats. Zootaxa, vol. 3872, no. 1, pp. 57−74. https://doi.org/10.11646/zootaxa.3872.1.5. (In English)
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