Nygmatonchus Cobb 1933
- 1. ENVIS Centre, Zoological Survey of India, M-Block, New Alipore, Kolkata- 700053, India.
- 2. Vidyasagar University, Department of Zoology, Paschim Medinipur, Midnapore- 721102, West Bengal, India.
Description
Nygmatonchus Cobb, 1933 (emended after Cobb 1933 and Inglis 1969)
Cuticle thick, complex anteriorly, elongate punctations posteriorly; striae on neck of ‘basket-work’ type, on body consisting of dots which fade out towards the middle of the body; lateral differentiation wing-type. Six outer labial and four cephalic setae. Amphideal fovea with large transverse slits with double contour about opposite base of pharynx. No posterior oesophageal bulb. Pharynx cyatholaimoid, dorsal onchium large with small subventral denticles. Male tail arcuate, diminishing rapidly, then conoid; spinneret long, chromadoroid. Precloacal cuticle slightly thickened in male, supplementary organs absent; postcloacal region with a structureless looking cuticular shield, behind which the cuticle is again thickened. Spicules two, equal in size. Gubernaculum appears very faint behind the spicules with L-shaped lateral piece frontal to spicules.
Type species: N. scriptus Cobb, 1933
List of valid species:
N. scriptus Cobb, 1933
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Chromadoridae
- Genus
- Nygmatonchus
- Kingdom
- Animalia
- Order
- Desmodorida
- Phylum
- Nematoda
- Scientific name authorship
- Cobb
- Taxon rank
- genus
- Taxonomic concept label
- Nygmatonchus Cobb, 1933 sec. Datta & Al-Helal, 2023
References
- Cobb, N. A. (1933) New nemic genera and species, with taxonomic notes. Journal of Parasitology, 20 (2), 81 - 94. https: // doi. org / 10.2307 / 3272166
- Inglis, W. G. (1969) Convergence in the structure of the head and cuticle of Euchromadora species and apparently similar nematodes. Bulletin of the Natural History Museum, Zoology Series, 17 (5), 149 - 204.