Department of Zoology, Punjabi University, Patiala-147 002, Punjab (India).
Three new species are added to the existing fauna of Neostromboceros Rohwer from India. These are N. khasi, N. naga and N. unifoveatus. These species are described and illustrated on a uniform systematic pattern. N. khasi can be distinguished from its allied species N. fuscinervis (Cameron) as:postocellar area quadrate, forewings with subinfnmated apices, subapical tooth of tarsal claw longer than apical one in the former species, while postocellar area longer than broad as 94, forewings hyaline, subapical tooth of tarsal claw shorter than apical one in the latter. N. naga can be separated from its allied species N. rotkneyi (Cameron) as:lateral furrows excurved (bulging), supraantennal pit double, and clypeus emarginate in N. naga whereas lateral furrows diverging posteriorly, supraantennal pit single and clypeus truncate in N. rothneyi. N. unifoveatus and its allied species N. lndobirmanus Malaise are quite distinct from each other and the combination of characters which easily set them apart are malar space 0.6~diameter of median ocellus, postocellar area broader than long as 4:3, postocellar furrow absent, antennal segment 3 longer than 4 as 4:3 in N. unifoveatus, whereas malar space linear, postocellar area broader than long as 54, postocellar furrow distinct and antennal segment 3 longer than 4 as 6:5 in N. indobirmanus. A key to the Indian species of this genus is provided.
