Fig. 12. Ascarophis arctica Polyanskiy, 1952 from Gasterosteus aculeatus Linnaeus. A in Rhabdochona angusticaudata sp. n. (Nematoda: Rhabdochonidae) from the Japanese eel Anguilla japonica, and new records of some other nematodes from inland fishes in Japan

Fig. 12. Ascarophis arctica Polyanskiy, 1952 from Gasterosteus aculeatus Linnaeus. A – anterior end of female body, lateral view; B, C – anterior end of female, lateral and dorsoventral views, respectively; D, E – vestibule of female, lateral and dorsoventral views, respectively; F – cephalic end of female, apical view; G – deirid; H – posterior end of male, lateral view; I – caudal end of male, lateral view; J – vulva, lateral view; K – tail of female, lateral view; L – egg.