Procamallanus (Spirocamallanus) hexophtalmatis n. sp., scanning electron micrographs. (A, B) Cephalic end of female, sublateral and apical views, respectively; (C) posterior end of male, sublateral view; (D) posterior portion of male tail, lateral view (arrow indicates postanal papilla); (E) distal end of tail of first-stage larva; (F) digital appendages on tail tip of first-stage larva; (G) deirid. (a) amphid; (b) cephalic papilla of external circle; (c) cephalic papilla of middle circle; (d) cephalic papilla of internal circle; (p) phasmid.