BIOLOGIYA MORYA, 2017, Vol. 43, No. 4, pp. 235-245 |
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New species of nematodes, Pseudolella pastor sp. n. and Dorylaimopsis lutosa sp. n. (Nematoda: Araeolaimida), from near the mouth of the Yen River in Vietnam Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok 152742 E-mail: Two new species of free-living marine nematodes of the order Araeolaimida were found in a mangrove forest near the mouth of the Yen River in northern Vietnam. Pseudolella pastor sp. n. is morphologically close to P. minor Gagarin, Nguyen Vu Thanh, 2008, but differs in its wider labial region, longer stoma, longer ventral branch of the amphidial fovea and longer spicules. A pictorial key for the identification of 13 valid species of the genus Pseudolella is provided. Dorylaimopsis lutosa sp. n. is morphologically close to D. angelae (Inglis, 1967), D. peculiaris Platonova, 1971 and D. magellanensis Chen, Vincx, 1998. This new species differs from D. angelae in the longer body, shorter cephalic setae, longer spicules and the presence of precloacal supplementary organs. It differs from D. peculiaris in the longer tail, shorter cephalic setae, longer spicules and the greater number of precloacal supplementary organs. The longer tail, shorter cephalic setae and shorter spicules separate D. lutosa from D. magellanensis. Key words: Vietnam, free-living marine nematodes, new species, Araeolaimida, Pseudolella pastor sp. n., Dorylaimopsis lutosa sp. n. |
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