Redescription of Two Nematode Species Parasitic in the Japanese Clawed Salamander, Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae), with Proposal of a New Genus Shunyanema (Nematoda: Oxyuroidea: Pharyngodonidae) Redescription of Two Nematode Species Parasitic in the Japanese Clawed Salamander, Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae), with Proposal of a New Genus Shunyanema (Nematoda: Oxyuroidea: Pharyngodonidae)

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Abstract

Two species of parasitic nematodes, both associated with the Japanese clawed salamander Onychodactylus japonicus (Houttuyn, 1782) (Caudata: Hynobiidae), are treated in this paper. The first, Angiostoma onychodactyla Bursey and Goldberg, 2000 (Rhabditoidea: Angiostomatidae), is redefined as having an elliptical oral aperture without lips; double lateral alae; and male caudal papillae comprising nine pairs of pedunculate papillae, a single sessile papilla anterior to the anus, and two minute projections on the posterior anal lip. A new genus, Shunyanema, is established for Parapharyngodon japonicus Bursey and Goldberg, 1999 (Oxyuroidea: Pharyngodonidae). The new genus is characterized by the didelphic amphidelphic genital system, the vulva situated in the middle region of the body, and the anteriorly directed vagina in females; the absence of a V-shaped sclerotized structure supporting the genital cone in males; and the lack of an operculum and filaments in the eggs. Shunyanema japonicum comb. nov. is also redescribed and illustrated in detail.

Journal

  • Species Diversity

    Species Diversity 11(3), 245-255, 2006

    The Japanese Society of Systematic Zoology

References:  28

Codes

  • NII Article ID (NAID)
    110006794411
  • NII NACSIS-CAT ID (NCID)
    AA11114903
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13421670
  • NDL Article ID
    8068991
  • NDL Source Classification
    ZR4(科学技術--生物学--動物)
  • NDL Call No.
    Z53-W570
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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