The genus Aquanirmus Clay and Meinertzhagen, 1939 is restricted to the Podicipediformes: Podicipedidae. A small series of females have been collected from the great grebe, Podiceps major. This is a new host record. If you have a male Aquanirmus from this host please contact Filipe Dantas-Torres at: filipe.vet@globo.com
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