Euterranova dentiduplicata n. sp. ex Stegostoma fasciatum, scanning electron micrographs. (A and B) Cephalic end of two different males, subventral and apical views, respectively (arrow indicates amphid); (C) detail of median labial elevations in male, apical view; (D) inner side of labial elevation with two rows of teeth in male; (E) anterior end of female, sublateral view; (F) median labial elevation in female, apical view. (b) Labial double papilla; (d) dorsal lip; (e) excretory pore; (l) lateral ala.