Fig. 6 in Taxonomy, genetic diversity, and phylogeny of the Antarctic mud dragon, Polacanthoderes (Kinorhyncha: Echinorhagata: Echinoderidae)

Fig. 6. Polacanthoderes shiraseae sp. nov., DIC photomicrographs. A–F, the holotypic female (ICHUM 8348), neck and segments 1–6, dorsal view (A) and ventral view (B), segments 7–11, dorsal view (C) and ventral view (D), segments 6 and 7, ventral view, focused at cuticle surface (E) and focused at deeper layer (F); G and H, paratype male (ICHUM 8371), segments 6–8, ventral view (G), segments 10 and 11, dorsal view (H). Black arrows, white arrowheads, and black arrowheads indicate sensory spot, type-1 glandular cell outlet, and type-2 glandular cell outlet, respectively. Abbreviations (ac), acicular spine; LA, lateral accessory; LD, laterodorsal; ltas, lateral terminal accessory spine; lts, lateral terminal spine; LV, lateroventral; MD, middorsal; ML, midlateral; pa, papilla; pe, penile spine; (sac), small acicular spine; SD, subdorsal; si, sieve plate; SL, sublateral; (tu), tube; VL, ventrolateral; VM, ventromedial. Digits in the abbreviations indicate the corresponding segment number.