Nippostrongylinae

Smales, L. R. & Heinrich, B., 2010, Gastrointestinal nematodes of Paramelomys rubex (Rodentia: Muridae) from Papua Indonesia and Papua New Guinea with the descriptions of three new genera and four new species of Helligmonellidae and Herpetostrongylidae (Nematoda: Trichostrongylida), Zootaxa 2672 (1), pp. 1-28 : 5

Nippostrongylinae species 1

( Figs 1, 2 )

A female and 2 pieces of worm from a host collected at the Lower Camp on Mt Somoro , Torricelli Mts., Sanduan Province, Papua New Guinea, 4. vi. 1988 by T . Flannery AM W.36761.

Tiny, slightly coiled worms, 1800 long, 50, 60 wide; cervical vesicle 36.0 long; oesophagus 300–330 long. Posterior end twisted; vulva 50 from tail tip; ovejector with vagina about 30, vestibule 60, sphincter 20, infundibulum 50; tail conical, 20 long; eggs appearing relatively large in utero, 56.0 by 33.0, were the only worms found in the single host dissected from this locality.

The only other females found with similar torsion of the posterior end were much larger worms, described below. Moreover the proportions of the ovejector and the position of the vulva relative to the tail were unique to species 1 while the size of the eggs was similar to that found in the much larger species of heligmonellid occurring in the region.

Figures

FIGURES 1–7. Nippostrongylinae Species 1. 1. female posterior end showing torsion; 2. ovejector. Nippostrongylinae Species 2. 3. male, anterior end lateral view; 4. male, anterior end showing synlophe ridges; 5. genital cone, lateral view; 6. bursa, left lateral view. 7. female, posterior end, lateral view showing ovejector. Scales are in m.