Abstract
Two new and two known species of the genus Paraoxydirus Jairajpuri and Ahmad, 1978 are described and illustrated from Western Ghats of India. P. vulvalpapillatus n. sp. is characterized by having large sized body (L = 4.6 – 4.8 mm); lip region continuous with completely amalgamated lips; amphidial fovea cup – shaped; 5 – 6 μm long odontostyle; 11 – 13 μm long odontophore; pharyngeal expansion about 28 – 36 % of neck length; transverse vulva; vulval papillae conspicuous; males with 46 – 54 μm long spicules; 11 – 14 continuous ventromedian supplements and long filiform tail similar in both sexes. P. indicus n. sp. is characterized by having large sized body (L = 4.0 – 4.8 mm); lip region poorly offset with amalgamated lips; amphidial fovea cup-shaped; 7 – 8 μm long, robust odontostyle; 17 – 18 μm long odontophore; pharyngeal expansion about 32 – 40 % of neck length; 21 – 26 μm long cardia; longitudinal vulva; 748 – 894 μm long filiform tail; males with 45 – 54 μm long spicules and 12 – 15 continuous ventromedian supplements. P. gigas Jairajpuri, 1964 and P. novus Jairajpuri, 1965 are redescribed based on specimens collected from several localities. A diagnostic Key and compendium to the identification of its eight valid species is provided.