Bathyarca pectunculoides Scacchi 1835

• Main Authors: Negri, Mauro Pietro, Corselli, Cesare
• Format: Other/Unknown Material
• Language: unknown
• Published: 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Arcoida; Arcidae; Bathyarca; Bathyarca pectunculoides; Beck; Greenland; Norway; Salas; Thomsen; Iceland
• Online Access: https://zenodo.org/record/6082147; https://doi.org/10.5281/zenodo.6082147

Bathyarca pectunculoides (Scacchi, 1835) Fig. 4 a–c Arca pectunculoides Scacchi, 1835 (p. 82, pl. 1, fig. 12). Arca pectunculoïdes [sic] Scacchi—Jeffreys 1879 (p. 572). Arca pectunculoides Scacchi—Hidalgo 1917 (p. 147). Bathyarca pectunculoides pectunculoides (Scacchi, 1836) — Nordsieck 1969 (p. 22, pl. 3, fig. 10.40). Bathyarca pectunculoides (Scacchi) — Di Geronimo & Panetta 1973 (p. 96, pl. 3, fig. 8); Di Geronimo & Li Gioi, 1980 (pl. 2, figs. 7–8). Bathyarca pectunculoides (Scacchi), 1833— Sirna & Masullo 1978 (p. 105, pl. 1, fig. 8). Bathyarca pectunculoides (Scacchi, 1833) — Thomsen & Vorren 1986 (pl. 4, fig. A). Bathyarca pectunculoides (Scacchi, 1836) — Barash & Danin 1992 (p. 234). Bathyarca pectunculoides (Scacchi, 1834) — Salas 1996 (p. 46); Giribet & Peñas 1997 (fig. 94); Giannuzzi-Savelli et al. 2001 (p. 80, fig. 103); Repetto et al. 2005 (p. 287, mid left fig.); Beck et al. 2006 (p. 95, mid fig). Bathyarca pectunculoides (Scacchi, 1835) — Oliver et al. 2016 (online resource). Diagnostic characters. Roundish trapezoidal shell, slightly more extended posteroventrally; blunt antero-ventral sinuation; outer surface with uneven growth markings and faint radial riblets. Prodissoconch: shell type ST-2D; length about 160 µm; roundish D-shaped outline; convex profile; P-1 surface smooth; P-2 reduced to metamorphic lip, barely separated from P-1; transition to the nepioconch well marked, somewhat step-like. Occurrence. Box-corer samples BC04 (21 specimens), BC05 (20), BC06 (1), BC66 (6), BC67 (4), BC71 (4), BC72 (65); cores BC04 (6), BC05 (74), BC21 (21), BC51 (25), BC52 (1), BC67 (1), BC72 (30). Maximum length: 4.5 mm. Distribution and habitat. Bathyarca pectunculoides is distributed from Greenland, Iceland and Norway to the Gulf of Mexico, the Azores, the Canaries and the Mediterranean, including the Levantine basin; it lives attached by byssus to stones and gravel from the shelf edge to bathyal depths, often associated with brachiopods (Nordsieck 1969; Barash & Danin 1992; ...