Dendronotus bathyvela Martynov, Fujiwara, Tsuchida, R. Nakano, N. Sanamyan, K. Sanamyan, Fletcher & Korshunova 2020
Dendronotus bathyvela Martynov, Fujiwara, Tsuchida, R. Nakano, N. Sanamyan, K. Sanamyan, Fletcher & Korshunova, 2020 Fig. 7 Dendronotusbathyvela Martynov et al. 2020a: 507–510, Figs 4, 5. Extended diagnosis. Body wide. Six to seven pairs of branched dorsolateral appendages. 10 to 15 appendages o...
| Main Authors: | , , , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2020
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| Online Access: | https://zenodo.org/record/4623962 https://doi.org/10.5281/zenodo.4623962 |
| Summary: | Dendronotus bathyvela Martynov, Fujiwara, Tsuchida, R. Nakano, N. Sanamyan, K. Sanamyan, Fletcher & Korshunova, 2020 Fig. 7 Dendronotusbathyvela Martynov et al. 2020a: 507–510, Figs 4, 5. Extended diagnosis. Body wide. Six to seven pairs of branched dorsolateral appendages. 10 to 15 appendages of oral veil. Five appendages of rhinophoral stalks. Lateral papilla of rhinophoral sheaths absent. Rhinophores with 15–25 lamellae. Lip papillae 50–70. Basal colour dull reddish-brownish with numerous distinct opaque white dots on notum, tips of lateral appendages, oral appendages. Dorsal processes of jaws inclined posteriorly at approximately 52° to the longitudinal axis of the jaw body and 0.56 of its length. Masticatory processes apparently bear indistinct denticles (may possess ridge-like structures). Radula with upto 41 rows of teeth. Central tooth with high cusp and up to 35 small distinct denticles without furrows. Up to 14 lateral teeth without or with few weak lateral denticles. Ampulla voluminous, with approximately three loops. Bursa copulatrix large, rounded to oval. Seminal receptaculum small placed distally at a short distance from the vaginal opening. Prostate discoid with about 21–25 alveolar glands. The vas deferens is long, penis elongate, narrow, curved. Body length upto 45 mm. Distribution. Pacific coast of Northern Honshu, Japan, possibly may occur further in NW Pacific. Bathymetry. Ashelf to deep-sea (bathyal) species, so far recorded at depths of 249– 510 m. Remarks. This species has recently been described by Martynov et al. (2020a). Until recently, only the single species D. robustus was recognized among the wide-bodied, shallow-water dendronotids of the North Atlantic and the North Pacific shelf (Ekimova et al.,2015).However, mostrecentdata showed that “ D. robustus ” is a species complex, which was already separated into D. robustus s.str., D. velifer and D. bathyvela (Lundin et al., 2017; Martynov et al., 2020a). Published as part of Korshunova, Tatiana, Bakken, Torkild, GrØtan, Viktor ... |
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