Figure 3

Digital photographs of P. ceticola L3 from Macaronesian deepwater fishes. (a) Entire P. ceticola larva from Diaphus mollis. (b) Anterior end showing the ventral boring tooth connected to the cuticular ridge, arrow indicates the excretory pore. (c) out-of-focus view of the anterior end, showing bulbs (arrows). (d) Anterior end showing nerve ring (NR). (e–f) ventricle region, showing ventricle (V) and caecum (C), intestine (Int), and oesophagus (Oe). Arrow in (f) indicates aperture intestine-ventricle. (g) Tail region, arrow indicating anus. (h) Part of tail, showing transverse cuticular striation. Specimens were collected from D. mollis (a,b,d,f,g) and D. rafinesquii (c,e,h). Scale bars: (a) 500 µm, (b, c) to same scale 50 µm, (d) 100 µm, (e, f) to same scale 200 µm, (g) 100 µm, (h) 50 µm.