Gagarin V.G.1, Klerman A.K.2 2009. [Two new species of free-living nematodes (Nematoda) from the Mediterranean Sea] // Invertebrate Zoology. Vol.5 (for 2008). No.1: 1–7 [in Russian, with English summary].

1 Institute of Inland Waters Biology, Russian Academy of Sciences, Borok, Yaroslavl region, 152742, Russia. E-mail:

2 Israel Oceanographic et Limnological Research, LTO, Tel Schikmona, P.O.B. 8030, Haifa 31080, Israel.

KEY WORDS: Nematoda, Mediterranean sea, Cyatholaimidae, Desmodoridae, new species.

ABSTRACT: Two new species of free-living nematodes were found in the Mediterranean Sea off the coast of Israel. Paracanthonchus lissus sp. n. from family Cyatholaimidae is similar to P. sunessoni (Allgén, 1942) and P. stekhoveni Wieser, 1954, but has a shorter cephalic setae and somatic setae absent. Besides, it differs from the first species by a less number of precloacal supplements, and from the second species by presence of ocelli. Desmodora ignava sp.n. from family Desmodoridae is similar to D. brachypharynx Allgén, 1947 and D. microchaeta Allgén, 1929, but differs by shorter tail and longer spicules. It differs from D. brachypharynx else by a smaller amphidial opening and more posterior location of vulva, and from D. microchaeta by another shape of spicules.

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