Fig. 2
From: Adult hookworms (Necator spp.) collected from researchers working with wild western lowland gorillas
Posterior extremities and distal end of spicules of the hookworms studied. a, b, Male of N. americanus collected from a researcher, left lateral view (a) and its spicule end (b) (note wrinkled dorsal cuticle in the prebursal region); c, Female of N. gorillae collected from a researcher, left lateral view; d, Male of N. gorillae collected from a researcher, right lateral view (note cuticular thickenings in the dorsal prebursal region); e, f, Male of N. gorillae collected from a researcher, left lateral view (e) (note cuticular thickenings in the dorsal prebursal region) and spicule end excised (f); g, Male of N. gorillae collected from a bonobo, with body twisted at base of bursa and inside matter with spicules extruded from the posterior end; note cuticular thickenings in the dorsal prebursal region