Fig. 6

Representative scanning electron microscopy (SEM) and cryoSEM renderings of A. pegreffii female: a Anterior region with three prominent lips shielding a tricuspid oral opening. White frames depict the area of c cephalic papilla and d serrated lip edge and a foramen in the center (d) at higher magnification. b Dereid. e Excretory pore with scattered discharge on its rim (white arrowhead). f Clusters of aggregated extracellular vesicles on the surface of the excretory pore. g Frontal view of the posterior region with transversely located slit-like anal opening and rows of caudal papillae descending from the tail tip downward. Inset: mulberry-like cluster of cells located in the tail tip. h Detail of caudal papillae. i Phasmid set laterally from the tail tip. Scale bars: 100 µm (a, g); 10 µm (b, c, e, h); 1 µm (d, inset g and i); 100 nm (f)