FIGURES 47–52 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish

FIGURES 47–52. Light photographs and drawings of Gyrodactylus milleri Harris & Cable, 2000 (holotype), showing the three different sizes and morphologies of the marginal hook sickles. 47, 50. Small marginal hook sickle; 48, 51. Medium sized marginal hook sickle; 49, 52. Large marginal hook sickle. Scale bar = 3 µm.