Aricidea (Strelzovia) parabelgicae Sikorski, 2017, n. sp.

• Main Author: Sikorski, Andrey
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Paraonidae; Aricidea; Aricidea parabelgicae; Finnmark
• Online Access: https://zenodo.org/record/6050861; https://doi.org/10.5281/zenodo.6050861

Aricidea (Strelzovia) parabelgicae n. sp. (Figs 1, 2) Material examined. 3940 Askeladd Beta SA –4; 71.4781°N – 20.4501°E (Finnmark); 270 m; 26.06.2007; holotype (ZMBN 116012) and five paratypes (ZMBN 116013). 3940 Askeladd Beta SA –2; 71.4751°N – 20.4476°E; 278 m (Finmmark); 26.06.2007; two paratypes (ZMBN 116014). 3940 Askeladd Beta SA–1; 71.4762°N–20.4454°E; 275 m; 26.06.2007; one specimen. 4664 Hasselmus HT1–05; 64.3988°N–7.7123°E; 252 m; 10.06.2009; two specimens. 5796 Linnorm ON–09; 64.4164°N–6.9609°E; 300 m; 09.06.2012; seven specimens. Description. Holotype longest specimen, complete, 10.0 mm long for 105 chaetigers, 0.3 wide at tenth chaetiger level. Branchial region very slightly inflated and flattened, composed of segments twice wider than long; postbranchial region cylindrical, segments as long as wide. Preserved specimens whitish, without any colour marking. Prostomium rounded, slightly wider than long; antenna or insertion scar totally absent; apical sensory organ as a minute rounded pitch located on anterior margin of prostomium (Figs 1A, 2A, B); eyes absent. Mouth anteriorly oriented; anterior lip as a double ridge extending inward mouth, posterior lip extending through first chaetiger only. Nuchal organs straight and oblique, joining to posterior end of prostomium; secondary ciliary organs appreciable, extending obliquely from near posterior end of nuchal organs to anterior end of corresponding lateral lip (Figs 1A, 2C). Branchiae from chaetiger 5 (Figs 1A, 2A, B), reaching chaetiger 12; all similar in length, nearly reaching mid-dorsal line except the last two pairs, which are slightly shorter; tips of branchiae tapering (Figs 1A, B, 2D). Notopodial postchaetal lobe short and subulate on prebranchial chaetiger 1, digitiform and twice as long on prebranchial chaetigers 3 and 4 (Figs 1A, 2B, C); progressively increasing in length through branchial region, becoming nearly as long as corresponding branchia (Figs 1B, 2D); on most of post-branchial region similar in shape to posterior thoracic ones ...