Dendronotus subramosus MacFarland, 1966

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 : 129

publication ID	https://doi.org/ 10.1163/18759866-BJA10014
DOI	https://doi.org/10.5281/zenodo.4624010
persistent identifier	https://treatment.plazi.org/id/03A8176E-026D-FFA7-23B5-FAD5CB4A11E6
treatment provided by	Carolina
scientific name	Dendronotus subramosus MacFarland, 1966
status

Treatment

Dendronotus subramosus MacFarland, 1966 View in CoL

Fig. 7 View FIGURE 7

Dendronotus subramosus MacFarland, 1966: 265–270 View in CoL , Pl. 40, Fig. 3 View FIGURE 3 ; Pl. 46, Figs 5–8 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 ; Pl. 47, Figs 3–7 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 ; Pl. 49, Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 ; Pl. 50, Fig. 2 View FIGURE 2 ; Pl. 52, Figs 1 View FIGURE 1 , 2; Robilliard, 1970: 462–466, Figs 3 View FIGURE 3 , 4 View FIGURE 4 , 6 View FIGURE 6 , 19–21, Pl. 64, Fig. 33; Behrens, 1980:76; Behrens & Hermosillo, 2005:95; McDonald, 1983: 177.

Extended diagnosis. Body narrow. Three to six pairs of branched dorsolateral appendages. Four to six appendages of oral veil. Three to seven appendages (posterior and medial ones longest) of rhinophoral stalks. Lateral papilla of rhinophoral sheaths absent. Rhinophoreswith 3–14 lamellae. 0–4 lip papillae. Basal colour opaque white, solid orange, brownish, ranges from pale yellow to dark brown, scattered small yellow spots, often with four thin subparallel lines (two on each side) next to the dorsolateral appendages. Dorsal processes of jaws inclined posteriorly at approximately 65° to the longitudinal axis of the jaw body and 0.33 of its length. Masticatory processess with ridge-like structures. Radula with up to 72 rows of teeth. Central tooth with up to 10 small distinctdenticles with furrows. Up to seven lateral teeth with up to seven denticles. Ampulla voluminous, folded.Bursa copulatrix large, oval. Seminal receptaculum small placed distally at a moderately short distance from the vaginal opening. Prostate discoid with up to 12 alveolar glands. The vas deferens is moderate in length, penis thin, long, winded. Body length up to 40 mm.

Distribution. North Eastern Pacific, Canada and USA.

Bathymetry. From intertidal to 20 m depth.

Remarks. Dendronotus subramosus is unique among the clades of narrow-bodied species since it has no lateral papillae on the rhinophoral sheath. However, phylogenetically D. subramosus is more closely related to the externally similarlooking deep sea species D. jamsteci (with the presence of rhinophoral sheath papillae), which was recently described off Pacific Honshu (Japan) and also to the externally different-looking NE Pacific shallowwater species D. albus (figs 1, 2). Such a morphological and molecular evolutionary mosaic is remarkable and contribute for the fulfilling of the term “mutlilevel fine-scale organismal diversity”.