Clathrina brandtae Rapp, Göcke, Tendal & Janussen, 2013, sp. nov.

• Main Authors: Rapp, Hans Tore, Göcke, Christian, Tendal, Ole Secher, Janussen, Dorte
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Calcarea; Clathrinida; Clathrinidae; Clathrina; Clathrina brandtae; Weddell; Weddell Sea; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/5672232; https://doi.org/10.5281/zenodo.5672232

Clathrina brandtae sp. nov. (Figure 2, Table 2) Synonyms and citations: Clathrina primordialis (Jenkin 1908 pars: 6; Brøndsted 1931 pars: 4-9; Koltun 1976: 163; Barthel et al. 1997: 46–47); Clathrina sp. nov. 14 (Klautau et al. 2013). Type locality: Eckström Shelf, Eastern Weddell Sea, Antarctica. SYSTCO station 71 / 48 - 1 at 70 ° 23.94 ' S, 8 ° 19.14 ' W, 602.1 m depth to 70 ° 23.89 ' S, 8 ° 18.67 ' W, 595.2 m depth. Type material: Holotype SMF 11867, paratype SMF 11866 (fragmented specimen), both from the type locality. Additional material examined: EASIZ Expedition. Weddell Sea (1 incomplete specimen), st ps 39 / 24, 21.02.1996, 71°S 8.15 ’W, 118–123 m depth (Barthel et al. 1997). Etymology: Named after Professor Angelika Brandt for her great efforts organizing the ANDEEP and SYSTCO expeditions. Description: Clathrinidae composed of a clathroid body of very irregularly and loosely anastomosing tubes. The cormus is narrower at the base than in the oscular region. The holotype is 1.5 cm high and 1 cm wide. There is one apical osculum. The paratype and additional material examined are fragmentary and the true shape of the cormus is not clear. Colour in life is yellowish beige and almost white in alcohol. No granular cells could be observed. Consistency is soft. The skeleton is composed of regular triactines and regular to subregular tetractines. Tetractines is the most abundant spicule type (Figure 2 B). Spicules are intermingled without any organization (Figure 2 C). However, the spicules of the single tubes are overlapping and therefore form a thicker layer than is found in the most simply built species of Clathrina. The apical actines of the tetractines are pointing into the interior of the asconoid tubes. Triactines are most common in the outermost layer of the tube wall. Otherwise there is no special orientation of the spicules. Spicules: Triactines: They are regular with slender and sharply pointed and conical actines (102-153 - 200 µm x 7 µm) (Table 2, Figure 2). Spicule Length ( Μ m) Width ( Μ m) min ...