First record of a cyclopoid host-Mesocyclops leuckarti (Claus) for an acanthocephalous worm-Acanthosentis dattai Podder from Delhi (India).
Among seven species of Cyclops encountered in four water ponds kept under observation in Delhi during 1973-74 period, six specimens of Mesocyclops leuckarti (Claus, 1857) were found to harbour juvenile stages of Acanthosentis dattai Podder, 1938, parasite of the freshwater fish of the genus Barbus. This is the first record of members of Cyclopidae as intermediate hosts of Acanthocephala in India. The morphology of hitherto unknown juvenile stage of A. dattai is described in this note.
D000049:Acanthocephala / Q000033:anatomy & histology*; D000818:Animals; D003445:Crustacea / Q000469:parasitology*; D007194:India