Subfamily ATYLENCHINAE

                                 Rev 08/03/2020

Classification:

      Tylenchina
       Tylenchina
        Tylenchoidea
         Tylenchidae
          Atylenchinae (Skarbilovich, 1959)
    Synonyms:
      Antarctenchinae (Spaull, 1972)
      Pleurotylenchinae (Andrássy, 1976)
      Aglenchinae (Siddiqui & Khan, 1983)

Morphology and Anatomy:

•  Undivided laterally elongated front plate of the head with large, roundish
        amphid openings;
• Stylet with about equal parts,
• Vulva surrounded by lateral or longitudinal flaps;
• Males often with large hypoptygmata. In Atylenchus, Antarctenchus, and Coslenchus poslonicus the cloacal opening is provided with large hypoptygmata; in Aglenchus. In other Coslenchus species, a cloacal tube is present.
•  Males present in all genera, but most Coslenchus species appear to be
        parthenogenetic. 
• Bursa well developed in males of Antarctenchus, Aglenchus, and Coslenchus, very poorly developed in Atylenchus and  Pleurotylenchus.  
• Tail long, attenuated, tail tip setose, acute or finely rounded. 
• Phasmids ad-vulval or post-vulval in Aglenchus and Coslenchus, on the tail in Antarctenchus.

      [Ref: Geraert & Raski, Rev. Nematol. 10(2):143-161 (1987).]

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