Haplotaxoides undefined-B

Haplotaxoides sp. B Material examined: USNM 1716321: USA, Oregon, Lane Co., McKenzie River below Leaburg Fish Hatchery, approximately 44.116 °N, 122.634 °W, 2 Feb 2017; anterior end of immature worm on slide, posterior end analysed for DNA (CE32195); for molecular data, see Table 1. S. Fend collection: 2 Feb 2017; three whole mounts. All collected by S. Fend. Description Length 20–36 mm, maximum diameter 168–190 μm; 97–157 segments. Dorsal chaetae slightly sigmoid, length 32–54 μm, diameter 2–3 μm, nodulus 0.42–0.46 x the chaetal length from the tip. Ventral chaetae strongly hooked, some with dorsal keel at tip; length 76–95 μm, diameter 4–6 μm, nodulus at 0.35–0.42 the length from the tip. Cuticular layer of body wall 1.5–2.5 μm. Mouth, pharynx, and other gut characters as described above. Coelomocytes numerous, 8–18 μm long; ventral glands to 130 μm, usually 3/bundle.