Laetmogone violacea Theel 1879

• Main Authors: Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias, Ávila, Sérgio P.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Holothuroidea; Elasipodida; Laetmogonidae; Laetmogone; Laetmogone violacea; Antarc*; Antarctic; Antarctica; Greenland; Iceland; Southern Ocean
• Online Access: https://doi.org/10.5281/zenodo.5583385; http://treatment.plazi.org/id/4148D21204DCFF5EFF33FA2C77A71208

Laetmogone violacea Théel, 1879 Reports for the Azores: non Laetmogone wyvillethomsoni Théel, 1879 — ? $ Hérouard 1902: 31–32, pl. 4, figs. 10–16; Laetmogone violacea Théel, 1879 — $ Perrier 1902: 390–398, pl. 19, figs. 1–7; Mortensen 1927a: 361–363, figs. 213, 214; Deichmann 1930: 120–121; Grieg 1932: 5; $ Hansen 1975: 58–61, figs. 21–22, pl. 8, fig. 8, pl. 9, figs. 9–10; Pérez-Ruzafa et al . 1992a: 171; García-Diez et al . 2005: 52. Type locality: South Pacific Ocean. See: Perrier (1902); Hansen (1975). Occurrence: cosmopolitan, present in the Atlantic, Pacific and Indian Oceans; from Greenland and Iceland (Heding 1942) south to Cape Verde (Hérouard 1923), including the archipelagos of the Azores (Perrier 1902). Depth: 225– 1,804 m (Hansen 1975); AZO: 1,442–? 1,550 m (Hérouard 1902, Perrier 1902). Habitat: epibenthic deposit-feeder on soft sediments, muddy sand to mud (Hérouard 1923, Hanse 1975). Larval stage: lecithotrophic (Tyler et al . (1985c). Remarks: Perrier (1902) identified L. violacea among the material collected by Talisman in the NE Atlantic, including specimens from the Azores (sta 121, 1883: 37°35’N, 29°25’46”W, 1,442 m). During the same year, Hérouard (1902) described another species of the same genus from Azorean waters, the Antarctic Laetmogone wyvillethomsoni ( Princesse Alice , sta 683: 38°20’N, 28°04’45”W, 1,550 m). Historically, L. violacea has been confused with L. wyvillethomsoni . Hansen (1975) considered that L. wyvillethomsoni was restricted to the Southern Ocean and Antarctica waters and all historical reports from the Atlantic ( e.g., Koehler 1896c; Grieg 1932) would prove to be misidentifications with closely similar species such as L. violacea . However, when Hansen re-examined the material assigned to L. wyvillethomsoni dredged by Princesse Alice in the Azores, the author believed that it belonged to a new species. Unfortunately, the poor preservation and the small number of specimens that constituted Princesse Alice ’s material did not allow Hansen to further provide a clear ...