Raphidascaris (Ichthyascaris) euani n. sp., scanning electron micrographs of female. (A and B) Cephalic end, lateral and apical views, respectively (arrow indicates cuticular ala); (C) dorsal lip; (D) middle region of subventral lip; (E) tail, lateral view (arrow indicates lateral ala); (F) tail tip, lateral view. (a) Anus; (b) labial double papilla; (c) labial single papilla; (d) dorsal lip; (e) amphid; (s) subventral lip.