Two New Species of Genus Oscheius from Pulses Ecosystem in Uttar Pradesh, India

The paper provides the descriptions and illustrations of two new species of the nematode genus Oscheius (Family Rhabditidae). Oscheius ciceri sp.n from chickpea ecosystem in Uttar Pradesh is characterized by the absence of epiptygma, 8 pairs of genital papillae leptoderan busra. longer stoma, lip region narrower 7.7 – 10.6 μm, well developed valve plates of basal bulb. Oscheius hussainii sp.n. from pigeonpea ecosystem in U.P. resembles with O.columbiana but differs in having smaller value (vs b=5.8 – 8.0 in O. columbiana); larger c value (vs c = 8.3 – 10.0 in O. columbiana). In this species females do not have mating plug unlike O.columbiana. having slender body (vs body width = 58 – 97 μm in O. shamimi) smaller spicule (vs spicule = 53 – 67 in O. shamimi); shape of spicule also different from that of O. shamimi; leptoderan here and in absence of epiptygma.