Nematode parasites of invertebrates from Manipur, North East India (Diagnosis, keys and illustration) Author Shah, Manjur text Zootaxa 2011 3107 1 37 journal article 45933 10.5281/zenodo.279226 c0e4a394-9ea4-464a-b336-74c80db1a14f 1175-5326 279226 Key to all known species of Leidynema Schwenk in Travassos, 1929 1. Males with several protuberances in posterior region............................. L. portentosae Van Waerebeke, 1978 - Males without protuberances in the posterior region.......................................................... 2 2(1). Spicule=63µm long in male............................. .. L. socialis ( Leidy, 1850 ) Adamson & Van Waerebeke, 1992 - Spicule less than 63µm long in male....................................................................... 3 3(2). Lateral alae present in females only.......................................................................4 - Lateral alae present in both sexes.........................................................................6 4(3). Lateral alae in female ends in backwardly pointed projection............................. L. schwencki Farooqui, 1967 - Lateral alae in female do not end in backwardly pointed projection.............................................. 5 5(4). Lateral alae in female extending along whole length of body without spinous process; cuticular bosses present.......................................................................................... L. delatorrei Chitwood, 1932 - Lateral alae in female start from mid-body and continuous up to tip of tail with spinous process; cuticular bosses absent......................................................................... L. stylopygi Biswas & Chakravarty, 1963 6(3). Female oesophagus 1/5th –1/6th of body length; males with five pairs of caudal papillae....... .. L. periplaneti Farooqui, 1967 - Female oesophagus 1/8th of body length; males with 3–5 pairs of caudal papillae................................................................................................. .. L . appendiculatum ( Leidy, 1850 ) Chitwood, 1932