Tylenchinae

Subfamily TYLENCHINAE

                                                                                   Rev 08/03/20

      Tylenchida
       Tylenchina
        Tylenchoidea
         Tylenchidae
          Tylenchinae (Orley, 1880)
    Synonyms:
      Dactylotylenchinae (Wu, 1969)
      Duosulciinae (Siddiqi, 1979)

Morphology and Anatomy:

Head not or slightly offset, amphidial openings variously shaped (with two major types, a longitudinal and a transverse slit), usually no distinct oral disc.
Stylet small to very small, usually with knobs.
Female genital tract short with only three or four cells in each of the four rows of the crustaformeria part of the uterus, spermatheca offset or not.
Tail elongated, to variously formed.
This subfamily contains the Tylenchidae that are most similar to the type genus Tylenchus.
The genus Filenchus is not always easy to distinguish from Tylenchus, and several species considered to be Tylenchus by Andrássy (1979) were considered by Raski & Geraert (1987) to belong to Filenchus.
Generally the species of Filenchus are not well known but F. misellus has been demonstrated to be a fungivore.
Our knowledge about some of these genera is rather restricted.

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