Fig. 6. Bivaginogyrus japonicus n in Gill Monogeneans (Platyhelminthes) Parasitic on Gnathopogon elongatus elongatus and G. caerulescens (Cypriniformes: Gobionidae) from Japan, with Descriptions of One New Species of Dactylogyrus and Three New Species of Bivaginogyrus (Dactylogyridae)

Fig. 6. Bivaginogyrus japonicus n. sp. infecting the tip of gill filament of Gnathopogon elongatus elongatus from an irrigation canal of the Ashida River in Hiroshima Prefecture, Heidenhain's iron hematoxylin stained. A, Seven individuals of B. japonicus n. sp. on the tip of the gill filament with proliferation of epithelial tissue (MPM Coll.-No. 21922); B, filament-like structures connect marginal hooks and the gill cartilage of the host (MPM Coll.-No. 21922); C, haptor of B. japonicus n. sp. showing the gland on the peduncle and reservoirs (MPM Coll.-No. 21918).