Corella eumyota Traustedt 1882, n.sp.

• Main Author: Monniot, Françoise
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Ascidiacea; Enterogona; Corellidae; Corella; Corella eumyota; Antarctic; Linde; Antarc*
• Online Access: https://zenodo.org/record/6149681; https://doi.org/10.5281/zenodo.6149681

Corella eumyota Traustedt, 1882 from Chile Figs 3, 4A. Material examined - 42 ° 27 ’ S – 73 ° 45 ’ W, 24 /08/ 1972, coll. Coloma. - Chili without precision, 26 /03/ 1970, coll. Gallardo. - Guaitecas Islands, 44 ° S–073° W, 24 m, SMNH 126199, Arnback-Christie-Linde coll. The type of Corella eumyota from Chile (Valparaiso) could not be found among the Traustedt material (pers. com. Zoologisk Museum Copenhagen). We have examined Corella samples present in the MNHN collections collected close to the type station and they correpond well to the Traustedt description. Ärnback-Christie-Linde (1929) described from Chili (Guaitecas Islands) small specimens with the same musculature and gonads as in C. eumyota but the gonoducts are not mentioned. We examined her specimens and they probably belong to the same species as the ones described by Traustedt. They are from a near by area. In her discussion she already doubted of the identity with true Antarctic specimens. The anatomical characters correspond to the Traustedt description. Some of the specimens mentioned above are aggregated; the largest is 4.5 cm long. The tunic is translucent when fixed. It has a rather smooth surface but wears some thin papillae and a few epibionts. Its consistency is cartilaginous. The oral siphon has 6 low lobes and is terminal and protruding with ocellli. The atrial siphon forms a short tube at 1 / 3 of the body length; its rim has also 6 lobes and ocelli. The animals were fixed by the right side. The tentacles are numerous in 3 orders of size. Their number varies according to the size and the stations. The dorsal tubercle is U-shaped and anteriorly open. The pre-pharyngeal band dorsally curves to become a groove anterior to the dorsal languets. The musculature on the siphons is strong. The longitudinal fibres coming from the oral siphon extend along 1 / 5 to 1 / 4 of the body length on both sides. On the left side transverse muscular bundles start from the ventral line and divide to make a dense network with the transverse ribbons issued from ...