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Some desmoscolecids from the White Sea (Nematoda: Desmoscolecida)
Decraemer, W.; Tchesunov, A.V. (1996). Some desmoscolecids from the White Sea (Nematoda: Desmoscolecida). Rus. J. Nematol. 4(2): 115-130
In: Russian Journal of Nematology. Russian Academy of Sciences. Institute of Parasitology: Moscow. ISSN 0869-6918, more
Peer reviewed article  

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  • Decraemer, W., more
  • Tchesunov, A.V.

    Thirty samples, mainly from the sublittoral zone from several localities of in the Velikaja Salma Strait, Kandalaksha Bay, White Sea contained a relatively high species diversity of the family Desmoscolecidae, but a low representation per species. Four species, new to science are described. Antarcticonema paracomecapitata sp. n. characterized by an annulated body cuticlwith 97-112 annuli, ornamented with tubular and hair-like projections and a lateral differentiation with hair-like setae only, two types of somatic setae: short setae with fine end and long stout setae with sucker-like end and in male by the length of the spicules (36 µm); Tricoma (Tricoma) albimaris sp. n. by a high number of main body rings (greater than 100), a somatic setal pattern with 10-12 subdorsal setae and 19-25 (male)/19-22 (female) subventral setae, broad triangular head shape, and in male by the shape of the gubernaculum with thick-walled apophyses; T. (T.) paracapitata sp. n. by a small body with 76-77 main rings, narrow triangular head shape in lateral view, somatic setal pattern with 9-10 subdorsal and 19-20 subventra setae, fine spicules with knob-like manubrium and the presence of two medioventra genital setae in male and Desmoscolex (Desmoscolex) paragranulatus sp. n. by a short body, a typical desmoscolecoid setal pattern, a broad head largely covered by the amphids which reach far anteriorly, presence of a concentration of pigment granules and in male by the 36 µm long, curved spicules. Additional data are given on Tricoma (Tricoma) similis Cobb, 1912, Desmoscolex (Desmoscolex) labiosus Lorenzen, 1969 and D. (D.) petaloides Lorenzen, 1972 found for the first time in the White Sea.

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