Cirriformia cf. tentaculata ( Montagu, 1808 )
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publication ID |
https://doi.org/10.12782/specdiv.29.281 |
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persistent identifier |
https://treatment.plazi.org/id/03F55461-1E22-FFB8-9D61-D404EBC8F817 |
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treatment provided by |
Felipe |
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scientific name |
Cirriformia cf. tentaculata ( Montagu, 1808 ) |
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Cirriformia cf. tentaculata ( Montagu, 1808) View in CoL var. A ( Figs 34–36 View Fig )
Material examined. Gangaraana: one of unknown sex, body length 42 mm, body width 2 mm, 184 chaetigers, 8 June 2014, coll. N. Jimi. NSMT-Pol-113569, COI INSD accession no. PP891562.
Izumozaki: one of unknown sex, body length 135 mm, body width 5 mm, 340 chaetigers, 7 June 2014, coll . N . Jimi. NSMT-Pol-113570, COI INSD accession no. PP891576.
Koinoura: one of unknown sex, body length 36 mm, body width 2 mm, 194 chaetigers, 26 June 2014, coll . N . Jimi. NSMT-Pol-113571, COI INSD accession no. PP891580.
Koura: one of unknown sex, body length 112 mm, body width 3 mm, 289 chaetigers, 6 June 2014, coll . N . Jimi. NSMT-Pol-113572, COI INSD accession no. PP891582.
Mase: one of unknown sex, body length 113 mm, body width 3 mm, 278 chaetigers, 7 June 2014, coll . N . Jimi. NSMT-Pol-113573, COI INSD accession no. PP891586.
Sasuhama: two of unknown sex, body length 97–131 mm, body width 3–4 mm, 238–307 chaetigers, 11 June 2014, coll . N . Jimi. NSMT-Pol-113574, COI INSD accession no. PP891596.
Toyohama-tonnel: one of unknown sex, body length 39 mm, body width 3 mm, 219 chaetigers, 21 October 2014, coll . N . Jimi. NSMT-Pol-113575, COI INSD accession no. PP891604.
Description. Body length 36–135 mm and width 2–5 mm, 184–340 chaetigers, and color in life orange. Color in alcohol pale yellow ( Fig. 34A View Fig ). Several specimens with black pigmentation in anterior ventral zone. Body elongated, dorsally inflated and grooved throughout, ventral surface not grooved. Eyes absent. Prostomium broad triangular ( Fig. 35). 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, in posterior segments, inserted at discrete distance from notopodial ridge, not shifting in mid-dorsal section. Notopodia and neuropodia well separated, forming shoulders shifting from a position closer to dorsum to a more median position along midbody. Two groups of dorsal tentacles arising from chaetigers 5–6 (<42 mm length) or 6–7 (> 42 mm length); each group with 17–42 tentacles. Dorsal tentacles organized in two groups each. Notopodia and neuropodia with capillary chaetae and spines. Notochaeta: 2–16 capillary chaetae per fascicle along entire body, 3–5 spines ( Fig. 36A View Fig ) present from chaetigers 34–59 and following chaetigers, spines short, slightly curved, blunt. Neurochaeta: 2–19 capillary chaetae per fascicle along entire body, 3–6 spines ( Fig. 36B View Fig ) present from chaetigers 21–39 and following chaetigers, spines short, slightly curved, blunt. Pygidium simple, with terminal anus.
Methyl Green Staining Pattern. The margin of prostomium was notably stained. Segment after tentacles were stained forming complete rings around segments, inter-segmental grooves not staining ( Fig. 34B, C View Fig ).
Distribution and habitat. Known from shallow water area of rocky beach (~ 4 m) around Japan.
Remarks. This species could be tentatively identified as C. tentaculata , and resembles C. cf. tentaculata var. B. This species can be discriminated from C. cf. tentaculata var. B by neuropodial spine start from posterior segments (23–33), whereas neuropodial spine of C. cf. tentaculata var. B starts from chaetigers 14–28. In original description of C. tentaculata contained few information that could not discriminate C. tentaculata from both of C. cf. tentaculata var. A and var. B. For resolving this taxonomic problem, redescription of C. tentaculata is needed. Cirriformia tentaculata was originally described from Devon shore, UK ( Montagu 1808). It is likely that the type specimen has been lost. To address this, the first author conducted a collection survey at Devon shore in 2016, but was unable to collect any specimens of Cirriformia . It is hoped that future efforts to collect topotypes will help resolve the taxonomic issues associated with this species.
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