Cirriformia ogasawaraensis, Jimi & Fujiwara & Kajihara, 2024
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publication ID |
https://doi.org/10.12782/specdiv.29.281 |
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DOI |
https://doi.org/10.5281/zenodo.14669730 |
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persistent identifier |
https://treatment.plazi.org/id/03F55461-1E36-FFAD-9DAE-D5FAEC7BF9BD |
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treatment provided by |
Felipe |
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scientific name |
Cirriformia ogasawaraensis |
| status |
sp. nov. |
Cirriformia ogasawaraensis sp. nov.
[New Japanese name: Ogasawara-mizuhiki] ( Figs 16–18 View Fig View Fig View Fig )
Material examined. Oomura: three of unknown sex, body length 36–56 mm, body width 1 mm, 210–244 chaetigers, 28 March 2015, coll. N. Jimi. Holotype (NSMT-Pol H-949), COI INSD accession no. PP891594, paratypes (NSMT-Pol P-950).
Description. Body length 36–56 mm and width 1 mm, 210–244 chaetigers, and color in life orange. Color in alcohol pale yellow ( Fig. 16A View Fig ). No pigmentation in anterior ventral zone. Body elongated, dorsally inflated and grooved throughout, ventral surface not grooved. Eyes absent. Prostomium broad triangular ( Fig. 17 View Fig ). Paired nuchal organs located on prostomium. Peristomium with one annulation and some wrinkles, deeply grooved in junction between peristomium and chaetiger 1. Branchiae start from chaetiger 1, one pair per segment. Branchiae arising from notopodial ridge, not shifting to mid-dorsal section. Notopodia and neuropodia separated, forming shoulders present at median position along whole body. Two groups of dorsal tentacles arising from chaetigers 5–6 (36 mm length) or 6–7 (> 36 mm length); each group with 13–21 tentacles. Dorsal tentacles organized in two groups each. Notopodia and neuropodia with capillary chaetae and spines. Notochaeta: 2–10 capillary chaetae per fascicle along entire body, 2–3 spines ( Fig. 18A View Fig ) present from chaetigers 21–22 and following chaetigers, spines short, curved, blunt. Neurochaeta: 2–7 capillary chaetae per fascicle along entire body, 3–4 spines ( Fig. 18B View Fig ) present from chaetigers 38–42 and following chaetigers, spines short, slightly curved, blunt. Pygidium simple, with terminal anus.
Methyl Green Staining Pattern. The edge of dorsal area of chaetigers 1–4 was notably stained. Segment after tentacles were stained forming complete rings around segments, inter-segmental grooves not staining ( Fig. 16B, C View Fig ).
Etymology. This specific name is an adjective after the type locality (Ogasawara Islands).
Distribution and habitat. Only known from among the attaching organisms of quay of Chichijima Island.
Remarks. This species resembles C. tentaculata var. A, C. cf. tentaculata var. B, and also C. tentaculata , in dorsal tentacles arising from chaetigers 5–6 or 6–7 and first branchia arising from chaetiger 1. The species can be discriminated from other species by little width per length.
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