A new species of the rare nematode genus Rostrulium Siddiqi, 1995 (Nematoda: Dorylaimida: Tylencholaimidae) from India

Rostrulium indicum sp. n. is described and illustrated from Western Ghats, India. The new species is characterized by having a 2.1 mm long body; lip region offset by slight constriction; odontostyle 17.5 mu m and odontophore 18 mu m long, guiding ring single; pharynx with slender anterior part which expands gradually into the cylindrical basal bulb occupying about 30% of total neck length; female genital system didelphic-amphidelphic, transverse vulva, short rounded conoid tail and male with 40 mu m long spicules, lateral guiding pieces and three spaced ventromedian supplements. This is the first report of this rare genus since its original description from Cameroon.