Bathylepeta linseae Schwabe, 2006, new species

• Main Author: Schwabe, Enrico
• Format: Other/Unknown Material
• Language: unknown
• Published: 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Lepetidae; Bathylepeta; Bathylepeta linseae; Antarctic; Weddell Sea; Weddell; Weddell Abyssal Plain; Antarc*; Antarctica; British Antarctic Survey
• Online Access: https://zenodo.org/record/5695517; https://doi.org/10.5281/zenodo.5695517

Bathylepeta linseae new species Figures 1–2, Table 1 Type material. Holotype: (ZSM Moll 20050785), leg.: K. Linse, J. Bohn & E. Schwabe, German Research Vessel “Polarstern”, ANDEEP III­Expedition, March 6 2005. Type locality. Antarctica, Weddell Sea, Weddell Abyssal Plain, St. PS 67 / 102 – 11 (65 ° 34.34 ’S 36 ° 31.18 ’W to 65 ° 35.51 ’S 36 ° 28.83 ’W), 4805 – 4797 m. Etymology. The species is named in honour of Dr. Katrin Linse (British Antarctic Survey) for her long time work on Antarctic molluscs and kindly coordinated work on board during the relevant cruise. Diagnosis. Shell large, elevation nearly of half of shell length, postcentral apex. Head moderately large compared to the foot. Genital papilla anteriorly at right side. Radula, rachidian tooth comprised of fused pair of lateral teeth, marginal teeth with smooth edges, basal plates not overlapping. Description. External morphology. Shell (Fig. 1 A) size of holotype: 26 mm long, 22.7 mm wide, 11.7 mm high, not arched, height/length ratio 0.45, width/length ratio 0.87 (Table 1). Anterior slope straight, posterior slope slightly convex. Aperture broad oval, with posterior widening from midpoint of shell onwards. Shell margin smooth, very thin, sharply edged. Protoconch and teleoconch strongly eroded. Apex (broken during examination) slightly posteriorly directed, situated immediately behind the center. Shell microsculpture smooth; with about 50, randomly arranged, faint off­white radial streaks shining through otherwise translucent blue­grey surface. Interspace of streaks narrower in anterior half. Whole shell with fine concentric growth lines. Soft parts generally cream white, lacking pigmentations. Head about of half of foot length (Fig. 1 B). In relation to head mouth very large, rounded, anteriorly with large horseshoe­shaped jaw plate showing small beak in center (Fig. 1 D). Tentacles rather long, eyeless; oral lappets present on both sides of snout (Figs 1 B, D). Foot fleshy, oval, separated from head by deep furrow. Mantle edge thick, ...