Doris berghi
Creators: name: Renau, Mar F.
name: Salvador, Xavier
name: Moles, Juan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Nudibranchia
Dorididae
Doris
Doris berghi

description: Doris berghi (Vayssière, 1901) comb. rest.
Figs 2–3, 4B–E, 5D–F, 6B
Aldisa berghi Vayssière, 1901: 27, pl. 1 figs 26–27.
Type locality
Gulf of Marseille, France, the Mediterranean Sea.
Diagnosis
Body shape convex. Mantle yellow whitish, dorsal tubercles white, translucid. Rhinophores white. First lateral tooth hook-shaped; outermost lateral teeth with a cusp extending ½ of the total length. Seminal receptacle elongated, brown. Bursa copulatrix round, whitish or slightly orange.
Material examined
SPAIN – Galicia • 1 spec. (sequenced and dissected: L = 70 mm); Galicia, Playa Viveiro; 43.6740° N, 7.6004° W; 1 m depth; 1 Jul. 2022; Xavier Salvador leg.; GenBank: OR286435; ZSM20240261. – Canary Islands • 1 spec. (sequenced); Gran Canaria, Piscinas de Agaete; 28.1068° N, 15.7112° W; 2 m depth; 5 Jul. 2022; Xavier Salvador leg.; GenBank: OR286436; ZSM20240262. – Catalonia • 1 spec. (sequenced and dissected: L = 0.4 cm); Girona, Sant Feliu de Guíxols, Coves Cala Maset; 41.7865° N, 3.0447° E; 3 m depth; 22 Feb. 2019; Xavier Salvador leg.; GenBank: OR286438; ZSMMol20210024.
Description
EXTERNAL MORPHOLOGY (Fig. 4E). Body compressed, convex in shape. Mantle white to yellow, darker at centre of dorsum, where viscera are found, translucid in margins. Mantle edge extending, covering foot. Dorsal tubercles white, with a brown-orange apex, more prominent and larger in a central band that goes from the rhinophores to the branchial plume, smaller tubercles with more intense apex colouration. Spicules translucid, interconnecting tubercles. Gills translucid. Rhinophores white, lamellated (6 lamellae), retracted into rhinophoral sheath once fixed.
RADULA (Fig. 5D–F). Radular formula 24 × 40.1.0.1.40. First lateral tooth hook-shaped, thin. Consequent lateral teeth present a less noticeable hook shape, thick base, smooth and relatively short cusp. Outermost lateral teeth with a cusp extending ½ of total length.
DIGESTIVE SYSTEM. Alike D. ocelligera (ZSM20240260).
REPRODUCTIVE SYSTEM (Fig. 6B). Gonad alike D. ocelligera. Ampulla pink with shady parts, round end connecting to gonad. Vaginal duct and penial sheath alike D. ocelligera, visible portion of vas deferens shorter. Seminal receptacle brown, elongated. Bursa copulatrix round, white, or slightly orange.
Ecology
Found in a rocky substrate. No sponge spicules were found in the stomach or intestine of the dissected specimens.
Distribution
Originally described from the Mediterranean part of France. Here, we found two specimens of D. berghi comb. rest. in the Nort-West part of the Mediterranean Sea, on the Catalan coast, and two more in the North-East part of the Atlantic Ocean, in Galicia and Gran Canaria. Therefore, the distribution seems to overlap with that of D. ocelligera.
Remarks
Here, we describe the restored combination D. berghi comb. rest., which coincides with Vayssière’s (1901: 27) description of Aldisa berghi, considered as a synonym of D. ocelligera and described as: “Dorid presenting a golden yellow colouration. The dorsal side of the mantle presents white dots scattered over its entire extent. Tubercles of variable size, wart-like with a large brown spot at their top. The yellow colouration is more accentuated on the anterior surface and the lower surface of the foot. It presents pale yellow rhinophores and gill leaflets with a few white or greyish mottled spots”. This species is clearly distinguished from D. ocelligera by the external pale-yellow colouration, the white rhinophores, the extension of the outermost lateral teeth cusp, and the shape and relative size of the copulatory bursa and seminal receptacle.
description: Published as part of Renau, Mar F., Salvador, Xavier & Moles, Juan, 2024, Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic, pp. 59-79 in European Journal of Taxonomy 943 on pages 68-69, DOI: 10.5852/ejt.2024.943.2585, http://zenodo.org/record/12570202