Caulleriella kacyae Blake 2018, new species

• Main Author: Blake, James A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Cirratulidae; Caulleriella; Caulleriella kacyae; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.3798576; http://treatment.plazi.org/id/03A2CB16FFC7A279FF36FB37FD4CFC60

Caulleriella kacyae new species Figure 25 Material examined. Weddell Sea, off Cape Norvegia, R / V Polarstern , ANDEEP III (ANT-XXII/3), Sta. 67/74-5, 20 Feb 2005, 71°18.11ʹS, 13°56.33ʹW, MUC, 1035 m, holotype (SMF 24909). Description. A moderate-sized species, holotype complete, but fragile, broken into five pieces, totaling 10.7 mm long and up to 0.4 mm wide across middle segments; with about 135 setigerous segments. Body elongate, consistent in width throughout. A deep mid-ventral groove present from setiger 1 to end of body (Fig. 25B); first few anterior segments also with distinct ridge arising from floor of groove. Dorsum smooth, elevated above notopodia, without longitudinal groove or ridge (Fig. 25A). Noto- and neuropodia widely separated from each other with neuropodia located on each side of ventral groove (Fig. 25 A–B). All segments short, about nine times wider than long. Color in alcohol light tan with no separate body pigment. Prostomium narrow, conical tapering to rounded apex (Fig. 25A); eyespots absent; nuchal organs oval, located at posterior lateral margins. Peristomium with three separate rings best seen laterally (Fig. 25A), dorsally elevated with rounded crest; dorsal tentacles widely spaced, arising from posterior end of last ring (Fig. 25A). First pair of branchiae on setiger 1 dorsal to notosetae; subsequent branchiae from same location; branchiae continuing segmentally to near posterior end. All segments with notopodia dorsally elevated as shoulders above smooth, broad dorsum (Fig. 25A). Parapodia reduced to simple mounds from which setae arise. Notosetae include 8–10 simple capillaries on the first 60–70 setigers, fewer capillaries posteriorly; capillaries joined by 1–2 simple acicular spines from about setiger 105. Anterior neuropodia with 7–8 capillaries; 1–2 acicular spines first present from setiger 18, continuing to posterior end, increasing to six spines in posterior half of body entirely replacing capillaries (Fig. 25C). Notopodial spines thin, relatively straight, with simple ...