FIGURES 1–14. A 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 1–14. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 1. Gyrodactylus jarocho sp. nov.; 2. Gyrodactylus xalapensis sp. nov.; 3. Gyrodactylus bullatarudis Turnbull, 1956 (re-examination); 4. Overlay of G. bullatarudis with G. j a ro c h o sp. nov. (broken line); 5. Overlay of G. bullatarudis with G. xalapensis sp. nov. (broken line); 6. Gyrodactylus costaricensis Kritsky & Fritts, 1970 (re–examination); 7. Overlay of G. costaricensis with G. j a ro c h o sp. nov. (broken line); 8. Overlay of G. costaricensis with G. xalapensis sp. nov. (broken line); 9. Gyrodactylus cytophagus Paperna, 1968 (reexamination); 10. Overlay of G. cytophagus with G. ja ro c ho sp. nov. (broken line); 11. Overlay of G. cytophagus with G. xalapensis sp. nov. (broken line); 12. Gyrodactylus gambusiae Rogers & Wellborn, 1965 (re-examination); 13. Overlay of G. gambusiae with G. j a ro c h o sp. nov. (broken line); 14. Overlay of G. gambusiae with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.