Some studies on three known and a new species of the genus Binema Travassos, 1925 (Travassosinematidae: Thelastomatoidea) from Manipur, North-East India

During the investigation of insect nematodes of North-East India, a new species of Binema (Travassosinematidae: Thelastomatoidea) was recovered from the intestine of Gryllotalpa africana Beauv. It is described and illustrated as Binema anulinervus n.sp. Three known species namely B. ornata Travassos, 1925, B. mirzaia (Basir, 1942) Basir, 1956 and B. korsakowi (Sergiev, 1923) Basir, 1956 have also been collected, redescribed and illustrated in the present study. The new species differs from all known species and only comes close to B. pseudornatum Leibersperger, 1960 for having caudal flagellate appendage. Key to species of the genus and a comparative measurement chart are given in Table 1.