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Abstract
Two new and one known species of dorylaim nematodes are described and illustrated from Kaziranga National Park, Assam, India. Prothornenema vulvatum sp. nov. is characterized by having body 1.06–1.17 mm long; lip region cap-like, slightly rounded, offset by constriction with moderate labial and post-labial sclerotization; 10–11 μm long odontostyle; vulva a transverse slit; cuticle both anterior and posterior to vulva with two or three deep invaginations; female tail long filiform, male tail short conoid with 13 or 14 contiguous ventromedian supplements. Allodorylaimus kazirangus sp. nov. is characterized by having body 1.84–2.16 mm long; truncate, slightly offset lip region; 30 μm long odontostyle; amphids duplex; cardia short conoid, an asymmetrical ring-like structure surrounds the junction between pharyngeal base and cardia; transverse vulva; uterus characteristically long, tripartite with wide proximal portion followed by a long narrow intermediate portion with moderately sclerotized inner lining joining a wider pars dilatata distalis; short conoid tail with no sexual dimorphism and males with 13 or 14 contiguous ventromedian supplements. Thornia propinqua (Paesler, Citation1941) Andrássy, Citation1957 is redescribed.
Acknowledgements
The authors are grateful to the Chairman of the Department of Zoology for providing necessary laboratory facilities and to the Department of Science and Technology and Council of Scientific and Industrial Research, New Delhi, Government of India for providing financial assistance under SERC fast track Young Scientist scheme and RA fellowships to first author.