Scanning electron micrographs of Archigetes vadosus n. sp. from Ictiobus bubalus (Rafinesque) A, C – specimens from host field codes US 831d, Oxbow south of Cumbest Bridge landing, Pascagoula River, Mississippi, USA; B – specimen from host code FR19_765, Sunflower River in Indianola, Mississippi, USA; D – specimen from host code US 862d (all specimens IPCAS C-905/1), Bluff Creek, Pascagoula River, Mississippi, USA. A – total view, B – detail of scolex, C, D – variability in scolex shape.