Light micrographs (DIC) of Haltidytes ooëides (Brunson, 1950). A dorsal view, B–C ventral view showing the insertion of trunk spines D dorsal view of the head E–F ventral view of the head. Asterisks (*) indicate the body cuticle. Scales bars: A–C 50 µm, D–F 25 µm. Abbreviations: alt anterior lateral ciliary tuft att anterior locomotory ciliation tuft ce cephalion, hy: hypostomion mf middle furrow mlt mediolateral ciliary tuft mo mouth plb posterior lateral ciliary band ptt posterior locomotory ciliation tuft tb1-2 trunk spines tc1-2 trunk spines td trunk spines.