Guerrerostrongylus marginalis n. sp., orientation of all sections is dorsal side toward the top of page, ventral side toward the bottom of page. 7–9, Synlophe of male paratype, scale bar 30 μm. 7, At level of esophagus. 8, At midbody. 9, At posterior end, showing spicules. 9–11 Synlophe of female paratype, scale bar = 50 μm. 10, At level of esophagus. 11, At midbody. 12, At proximal portion of uterus.