A new species of Mediorhynchus Van Cleave, 1916 (Acanthocephala: Gigantorhynchidae) from Burhinus capensis (Aves: Charadriiformes) and a report of Mediorhynchus africanus Amin et al. 2013 from Guttera edouardi (Aves: Galliformes) from South Africa - Smales, Lesley (2021)