FIGURE 3 in New mouthless nematode of the genus Parastomonema Kito, 1989 (Nematoda: Siphonolaimidae) from a mangrove forest on the coast of Thailand, and erection of the new subfamily Astomonematinae within the Siphonolaimidae

FIGURE 3. Parastomonema papillosum sp. nov. Male (A, E, F, holotype ZIHU 3137; H, additional specimen) and female (B–C, ZIHU 3138; D, ZIHU 3139; G, ZIHU 3142): A) Anterior region. B) Transverse section at level anterior to cephalic setae, cephalic papillary nerves (arrowed). C) Transverse section at level of amphids. D) Two amphids located in tandem. E) Anterior and posterior testes near the arrowed point in Fig. 2A. F) Cloacal region. G) Posterior region. H) Head sensilla, sequentially arranged from the surface (a) to the deeper focal plane (d). A, E, F, H, left side view; D, G, right side view; B, C, en face view, top is dorsal side. Bar scales: A, E–H = 10 µm; B–D = 5 µm. Abbreviations: amp = amphid, cgl = caudal gland, cp = cephalic papilla/papillary nerve, cs = cephalic seta, gub = gubernaculum, gut = rudimentary gut, m = micro­organisms, nr = nerve ring, spic = spicule, T1 and T2 = anterior and posterior testis, vs = vacuolated structure.