Fig. 1. Icelanonchohaptor tropicalis n in New and previously known ectoparasitic monogenoids (Platyhelminthes) on native and non-native fishes from tributaries of the Usumacinta River basin (southern Mexico), a Neotropical transition zone

Fig. 1. Icelanonchohaptor tropicalis n. sp. on the Usumacinta buffalo Ictiobus meridionalis (Catostomidae) from the Usumacinta river basin (southern Mexico). A – whole mount (composite, dorsal view); B – vagina; C – copulatory complex (ventral view); D – egg; E – Haptor; F – Hook. Abbreviations: mco – male copulatory organ; ap – accessory piece; sv – seminal vesicle.