Scanning electron microscopy observations on Telotylenchinae Siddiqi, 1960 (Nemata, Belonolaimidae). The genus Tylenchorhynchus Cobb, 1913
1994
Baujard, P. | Martiny, B. (Laboratoire de Nematologie, Dakar (Senegal)) | Mountport, D.
The species of the genus Tylenchorhynchus were studied under SEM. Observations showed the great heterogeneity of the genus according to the head pattern and confirmed the absence of validity of some characters at the taxonomic level (number of incisures in the lateral field, presence versus absence of longitudinal ridges, presence versus absence of notch on the bursa). Four to five different head patterns can be recognized, corresponding to the cuticle ultrastructure patterns previously defined. Bitylenchus is considered as a junior synonym of Tylenchorhynchus, and Bitylenchus pratensis and Bitylenchus serranus are transferred to the genus Tylenchorhynchus.
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