Mononchus papillatus Bastian.
Creators
Description
Mononchus papillatus Bastian. (Fig. 8.)
Ba s tian, 1855, p. 108, pl. x, figs. 52-53.
Bütsehli, 1873, p. 76, pI. iii, fig. 19 a~b.
de Man, 1884, pp. 64-65, pl. ix, fig. 35.
Dimension s.- Body -length = 1.720 mm., max. width=- 0.055 mm., oesophagu s=0.4 9 7 mm., tail= 0.148 mm., vulva= l.088 mm., α= 3 1. 2 7, β =3.46, y =11.62, V = 63.26 per cent.
111 the sample from J2 was recorded a juvenile female o f the genus M o n o n c h u s Bastian, which in its general shape seems to agree rather well with M. l~apillatu~' Bast.
This applies especially to the shape of the buccal cavity, which is ~u'med with a v e r y anterior dorsal tooth.
The front end is e v i d e n t l y r o u n d e d b u t not bent o u t w a r d s as in the species of de Man (pl. ix, fig. 35).
I t should bc mentioned t h a t the ventral wall of the buccal c a v i t y of the J a n M a y e n specimen is v e r y finely toothed.
The ventral wall mostly is absolutely smooth, not toothed as in M. muscorum Duj., closely related t o this species, a n d Bastian, who first described M. papillatus, also figured it in such a manner.
Ditlevsen (1911) has, however, pointed o u t that Biitschli (1873) figured a h e a d of M. papillatus, the ventral wall o f the buccal cavity of which is evidently toothed, although not so strongly as in the alternative species.
According to Mieoletzky it m a y sometimes, when the ventral wall is more strongly (sharply) toothed, be very difficult to separate this species from the old M. muscorum.
I n this respect especially the structure o f the buccal cavity of the Jan Mayen specimen, the ventral wall o f which is evidently but more weakly toothed than in M. muscorum, seems t o agree rather well with the figure given b y Btitschli.
Only the tail differs from this established cosmopolitan species, since it certainly tapers gradually posteriorly b u t seems to be a little more elongated and slender than in the type-specimen, figured b y de Man.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Mononchidae
- Genus
- Mononchus
- Kingdom
- Animalia
- Order
- Mononchida
- Phylum
- Nematoda
- Scientific name authorship
- Bastian.
- Species
- papillatus
- Taxon rank
- species
References
- BASTIAN, H. CH. 1865. M o n o g r a p h on the A n g u i l l u l i d a e or free Nematoids. Trans. Linn. Soc. London, 25.
- BUTSCHLI, O. 1873. Beitr a go zur Kenntnis freilebender Nematoden. Nova Acta Leop. - Carol, 36.
- 1884. Die fret in der reinen Erde and im siissen Wa ~ vser lebenden Nematoden der niederldndischen Fanna • Leiden.