Nematodes of high altitudes in India. IX. Descriptions of two new species of Rotylenchus (Nematoda : Tylenchida)

Abstract

Two new species of Rotylenchus Filipjev, 1936 from the area of Himachal Pradesh, India, are described and figured. R. dalhousiensis n. sp., is characterized in having a body 0 .55-0.68 mm long, head marked with 5-6 annules, basal annule of lip region without longitudinal lines, spear 24-28 pm and phasmids preanal. This new species is close to R. quartus (Andrissy, 1958) Sher, 1961, R. fallorobustus Sher, 1965, R. citri Rashid & Khan, 1973 and R. helicus Husain & Khan, 1967. R. neorobustus n. sp. is characterized in having a body 0.77-0.98 mm long, head marlred with 5-6 annules, basal annule of lip region with 24 longitudinal lines, spear 36-40 μ m and phasmids preanal. This new species is close to R. indorobustus Jairajpuri & Baqri, 1973, R. fallorobustus Sher, 1965, R. agnetis Szczygiel, 1968 and R. pruni Rashid & Husain, 1972. In both cases only females have been found.