FIGURE 4. Scanning electron and light microscope micrographs of adult free-living gordiids reared from field collected cysts or collected as free-living adults from Payne County, Oklahoma. (A) Dorsal view of the posterior region of a female Paragordius varius. Note the three posterior tail lobes (Tl). Scale bar = 500 Μm. (B) Ventral view of the posterior region of a male Paragordius varius. Note the two long posterior tail lobes (Tl), cloaca (c), and spines on the ventral midline (white arrows). Scale bar = 200 Μm. (C) Midbody cuticular structures of a male P. varius. Note the hemisphirical structures (Hs). Scale bar = 10 Μm. (D) Tapered anterior end and cuticular patern of a male Chordodes morgani. Scale bar = 100 Μm. (E) Midbody region of a male C. morgani showing the characteristic leopard pattern. Scale bar = 300 Μm. (F) Midbody region of a male C. morgani showing the characteristic crown areole pattern. Scale bar = 100 Μm. (G) Ventral view of the posterior region of a male C. morgaini. Note no tail lobes and an oval cloaca (c). Scale bar = 200 Μm. (H) Cloaca opening surrounded by circumcloacal spines. Scale bar = 10 Μm. (I) Cuticular structures on the posterior region of a male C. morgaini. Note the crown areoles (Ca), bulging areoles (BA), and bristles (white arrow). Scale bar = 8 Μm. (J) Tapered anterior end and cuticular patern of a male Gordius n. sp. Scale bar = 10 Μm. (K) Areole pattern on the posterior body region of a male Gordius n. sp. Note the weakly developed areoles (A) and the presence of bristles (white arrows). Scale bar = 20 Μm. (L) Ventral view of the posterior region of a male Gordius n. sp. Note the two posterior tail lobes (Tl), cloaca (c), and post cloacal crescent (Pcc). Scale bar = 120 Μm.