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 : 6

Nippostrongylinae species 3

( Figs 8–19 )

Four males, 4 females from 3 hosts collected from Siyoubrig and the Urong Forest, Mokwan area, Arfak Mts (1° 6´S; 135° 35´E), Papua, Indonesia, by T . Flannery & L. Szalay 10. x. 1992 AM W.36763, W.36769; a female from a host collected from the eastern slope of Mt Somoro , Torricelli Mts (3° 24´S; 142° 8´E), Sanduan Province, Papua New Guinea, by T . Ennis 7.i.1988 AM W.36768; a female from a host collected from near Ok Tedi mine site, Mabiomskin, Western Province, Papua New Guinea, by T . Flannery & L. Szalay 10. v. 1992 AM W.36766.

Small worms, body loosely coiled. Prominent cephalic vesicle present with about 7 annulations; buccal capsule vestigial. Mouth opening triangular with rudimentary lips; labial and cephalic papillae not observed. Oesophagus claviform. Nerve ring, deirids and excretory pore not observed. Synlophe of continuous pointed longitudinal cuticular ridges in both sexes extends from posterior margin of cephalic vesicle to immediately anterior to bursa or vulva; 11–15 ridges in anterior, 9–16 in mid body, 9 in posterior of female. Axis of orientation of ridges sub frontal in anterior; 6–8 ridges dorsal side, 5–7 ridges ventral side. In female ridge 1– 5 increasing in size, ridges 6–8 smaller; ridge 1´, 2´largest, ridges 3´– 7´decreasing in size. In posterior body ridges become smaller, about same size, losing orientation.

Males: 2300–2450 long, 60–85 wide; cephalic vesicle 33–37 long, oesophagus 280–300 long. Bursa asymmetrical, left lobe larger than right. Dorsal lobe with median notch, shorter than laterals; dorsal trunk bifurcates at about 2/3 length, each branch dividing again at distal tip; terminal divisions, rays 9, 10 symmetrical, rays 8 arising at same level from dorsal trunk proximally to division of dorsal ray. Genital cone small; ventral lip rounded. Spicules filiform, tips simple 280–320 long. Gubernaculum 40–42.5 long.

Females: 2350–3500 (2800) long, 74–99 (85) wide; cephalic vesicle 27–43 (36.5) long, oesophagus 235– 420 (314) long. Ovejector monodelphic, vulva near posterior end, 72.5–109 (76) from tail tip; vagina 30; vestibule, 50, longer than sphincter, 25, infundibulum longest, 80. Tail reflected ventrally, with praepuce, 33– 36 (29) long. Tail tip blunt, conical. Eggs thin shelled, ellipsoidal, in utero 56–68 (70.5) by 31–36.

Although there were enough suitable specimens to prepare a full description of the female of this species, it was not possible to prepare adequate sections of the male synlophe for characterization and illustration, or to flatten out the bursa to display its features. Therefore a complete description of this species could not be given. The combination of characters of the synlophe and the posterior end of the female, however, suggest that these specimens may represent an as yet undescribed genus.

Figures

FIGURES 8– 19. Nippostrongylinae Species 3. 8. male, anterior end; 9. female, transverse section, anterior body; 10. male, anterior end showing synlophe ridges; 11. dorsal ray; 12. female transverse section, mid body; 13. female transverse section, posterior body; 14. genital cone, lateral view; 15. gubernaculum, lateral view; 16. genital cone, dorsal view; 17. female posterior end, lateral view; 18. spicules, proximal ends; 19. spicules, distal tips. Abbreviations, d— dorsal; l—left; r—right; v—ventral. Scales are in m.