Anguillosyllis andeepia Maciolek 2020, n. sp.

• Main Author: Maciolek, Nancy J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Syllidae; Anguillosyllis; Anguillosyllis andeepia; South Atlantic Ocean
• Online Access: https://doi.org/10.5281/zenodo.5281382

Anguillosyllis andeepia n. sp. Figures 20–21 urn:lsid:zoobank.org:act: BA33786A-A665-40C1-AE6E-1CBA34BEB6FA Material examined. South Atlantic Ocean, abyssal plain, South of Meteor Rise (1 specimen from 1 station) Coll. S. Doner ANDEEP III, Sta. PS 67/21-3, 29 Jan 2005, 47°40.05′S, 4°14.84′E, large box corer, 4551 m, holotype (SMF 24863). Description. Body with 8 setigers (Figs. 20A, 21A), colorless; holotype slightly longer than 1 mm without anal cirri, 0.2 mm wide without parapodia, 0.5 mm wide with parapodia but excluding setae; posterior appearing somewhat wide and flat due to distortion by eggs. Palps elongated, completely fused, narrowing to softly pointed anterior margin, with faint internal indication of median furrow; prostomium dome-shaped, not well demarcated from palps, with three antennae in transverse row; eyes lacking; peristomium 0.6 mm long, 1.5 times longer than prostomium (Figs. 20A, C; 21A), with two short oval tentacular cirri. No nuchal cilia visible even when specimen stained with Shirlastain A. Proventricle in two setigers, bluntly barrel-shaped anteriorly, slightly tapered posteriorly, rows of muscle cells indistinct (Figs. 20A, 21A). Parapodia uniramous, shortest on setiger 1, becoming longer, rectangular over next few setigers; very small anterior lobe present on all setigers; posterior lobe smallest on setiger 1, becoming much larger through setiger 7, then slightly smaller on setiger 8 (Figs. 20B, 21B); dorsal lobe rounded; parapodia without internal glands. Dorsal cirri lost, basal cirrophores present on setigers 1, 3–8; ventral cirri short, digitiform, inserted in middle of parapodium. All setae compound with heterogomph shafts; setiger 1 with 18–20 setae, setiger 2 with 20–22 setae, remaining setigers with similar numbers, fewer setae in setiger 8. Several setae emerging from distal tip of parapodium, others from ventral face of parapodium; ventral-most blades shortest, 25–50 µm, terminating in pointed tips; longer blades 85–110 µm, with long, fine, drawn-out tips; blades possibly ...