The gastrointestinal helminths of Rattus niobe (Rodentia: Muridae) with descriptions of two new genera and three new species (Nematoda) from Papua New Guinea and Papua Indonesia Author Smales, L. R. text Zootaxa 2016 4117 2 183 197 journal article 38958 10.11646/zootaxa.4117.2.3 030fe6dc-d6b3-48b8-bd1d-a2133fdbfaa4 1175-5326 264715 77364DE9-61B2-4768-98BC-A77159BF7EB8 Nippostrongylinae species 1 ( Figs 35–39 ) Four males, 3 females from a single individual of R. niobe collected from Dokfuma Star Mountains, 5° 1´S 141° 7´E West Sepik, Sanduan Province; 5. iv. 1987 , coll. T. Flannery AM W.48495; 1 host from hill south of Tifalmin; 15. iv. 1987 , coll. T. Flannery AM W.48493; 1 host from Ofekaman, 5° 5´S 141° 35´E Telefomin area, West Sepik Sanduan Province; 13. ii. 1984 , coll. T. Flannery AM W.48494. Very small fragile worms loosely coiled. Male: 1.15–1.60 (1.31) long, 36.0–39.5 (38.1) wide. Cephalic vesicle 20.4–36.3 (29.8), oesophagus 220–260 (242), excretory pore, deirids and nerve ring not seen. Bursa dissymmetrical, right lobe larger, dorsal lobe shorter than lateral lobes, lateral rays 4, 5, 6 with common trunk; dorsal trunk symmetrical, divided at about half its length, rays 8 arising at about same level close to bifurcation of trunk; division of rays 9, 10 not observed. Gubernaculum 17 long, spicules equal, filiform, 120.0–180.0 (152.5). Female: 1.40–1.60 (1.47) mm long, 36.3–39.6 (37.8) wide. Cephalic vesicle 30.6 (3 measurements) long; oesophagus 210.0–247.5 (235.0); nerve ring and deirids not seen, excretory pore 149.6 from anterior end. Posterior end reflected ventrally, without praepuce, vulva 110.0–120.0 (113.3) from tail tip; ovejector with vagina about 20, vestibule 35, sphincter 25, infundibulum 30 long; tail blunt, conical 30.6–33.0 (32.0) long. Uterus with 3–4 thin shelled, ellipsoidal, eggs 51.0–68.0 (58.9) long, 20.4–25.5 (22.7) (measured in utero ). The nature of the material and the small number of specimens precluded either a full characterization of the bursa or the description of the synlophe. Such characters as could be observed did not correspond with the description of any known species occurring in the Sahul region