Checklist of the parasites of the black-necked swan, Cygnus melanocoryphus (Aves: Anatidae), with new records from Chile González-Acuña, Daniel Moreno, Lucila Cicchino, Armando Mironov, Sergey Kinsella, Mike Zootaxa 2010 2637 55 68 [151,430,223,249] Cestoda Hymenolepididae Hymenolepis Animalia Cyclophyllidea 4 59 Platyhelminthes species megalops