Oscheius nadarajani Sp.N. (Nematoda: Rhabditida) from Lentil (Lens culinaris) Rhizosphere in Unnao District of Uttar Pradesh, India

Oscheius nadarajani sp.n. (Nematoda: Rhabditida) is identified and described from rhizosphere of lentil (lens culinaris) at Kurmikhera village of Unnao district of Uttar Pradesh, India. This new species closely resembles with Oscheius columbiana Stock, et al., 2005 but differs in having shorter stoma (vs stoma = 21-28 μm in O. columbiana); spicule shape different from that of O. columbiana; notch absent (bursal notch present in O. columbiana); juveniles do not form clumps. This species can also be compared with O. shamimi but has narrower stoma (vs stoma 4.6 - 5.7 μm in O. shamimi); anal lips not protruded in Oscheius nadarajani where as anal lips very salient in case of O. shamimi. moreover endotokia matricida seen in this case whereas it is never reported in any of the species of Oscheius except O. amsactae (Ali, et al., 2007).