Dendronotus claguei Valdés, Lundsten & Wilson, 2018

Korshunova, Tatiana, Bakken, Torkild, GrØtan, Viktor V., Johnson, Kjetil B., Lundin, Kennet & Martynov, Alexander, 2021, A synoptic review of the family Dendronotidae (Mollusca: Nudibranchia): a multilevel organismal diversity approach, Contributions To Zoology 90 (1), pp. 93-153 : 114

Dendronotus claguei Valdés, Lundsten & Wilson, 2018

Dendronotusclaguei Valdés, Lundsten, Wilson, 2018: 412–415 , Figs 3B , 9.

Diagnosis (original description). Body very narrow. Four to six pairs of dorsolateral appendages (reported as unbranched). Four appendages of oral veil. Four appendages of rhinophoral stalks (innermost appendages from each side longest). Lateral papilla of rhinophoral sheaths absent. Rhinophores with 11 lamellae. Lip papillae not reported in original description. Basal colour uniformly translucent white. Masticatory processes of jaws with irregular denticlesandpossibly with ridge-like structures. Radula with up to 32 rows of teeth. Central tooth with deep furrows andwith upto 13 distinct denticles. Up toeight lateral teeth with up to ten denticles. Ampulla with three loops. Prostate compactwith about nine alveolar glands. Bursa copulatrix large, rounded. Seminal receptaculum large placed distally at considerable distance from the vaginal opening. The vas deferens is moderate in length, penis relatively long, narrow. Body length upto 18 mm.

Distribution. Alarcón Rise, Gulf of California, Mexico, NE Pacific Ocean.

Bathymetry. 2369 mdepth.

Remarks. Forthisrecently describeddeep-sea species there is no additional morphological information and molecular data is very limited. In particular, the dorsolateral appendages need a further detailed study.

Figures

FIGURE 3 A.Map of the Northern Hemisphere showing the distribution of D.elegans (including “D.niveus”), D.kalikal, and D.yrjargul sp. nov.The type locality of D.elegans is indicated by crossed lines. B. The haplotype networks based on cytochrome c oxidase subunit I (COI), 16S rRNA (16S), and 28S rRNA (28S) molecular data showing genetic mutations occurring within D.elegans (“D.niveus”), D. kalikal, and D.yrjargul sp. nov. specimens.Abbreviations:BeSt – Bering Strait; BS – Barents Sea; Gr – Greenland; Km – Kamchatka; KS – Kara Sea; Ku – Kuril Islands; LS – Laptev Sea; Nf – Newfoundland; NS – Norwegian Sea; WS – White Sea.Type locality of D.elegans is marked on the map by “x”.