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Occurrence and taxonomical significance of additional cephalic setae in some Linhomoeidae (Nematoda)
Hendelberg, M. (1979). Occurrence and taxonomical significance of additional cephalic setae in some Linhomoeidae (Nematoda). Ann. Soc. R. Zool. Bel. 108(1-2): 57-64
In: Annales de la Société Royale Zoologique de Belgique = Annalen van de Koninklijke Belgische Vereniging voor Dierkunde. Société Royale Zoologique de Belgique: Bruxelles. ISSN 0771-5528, more
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Keywords
    Linhomoeidae Filipjev, 1922 [WoRMS]; Marine

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  • Hendelberg, M.

Abstract
    The cephalic sensory structures, papillae and setae, were studied in five species of Paralinhomoeus (Linhomoeidae) by light and scanning electron microscopy. A basic cephalic pattern, six labial papillae and ten cephalic setae, was characteristic of all young juveniles. Additional cephalic setae were observed in adults of four species, most frequently in males, giving rise to a variation within species or a sexual dimorphism. The wide-spread occurrence and great variation in number of additional cephalic setae have to be considered before using the number of cephalic setae as a taxonomical character within Paralinhomoeus and related genera.On the basis of present knowledge the delimitation of some genera within Linhomoeinae is doubtful and the genera Perilinhomoeus and Anticyclus are to be synonymized with Paralinhomoeus.

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