Jujubinus sartorii Aradas & Maggiore, 1840

SSH XII – Fig. 7M–O

Jujubinus sartorii Aradas & Maggiore, 1840: 11–12.

Calliostoma (Jujubinus) goniobasis Coen, 1937: 157, pl. ii fig. 16.

Diagnosis

Shell of large size for the genus, solid, 5–6 spaced spiral cords, elevated, granulose, interspaces twice as broad as the cords, with strong prosocline lamellae, peripheral cord evident, high height/width ratio.

Type material

Syntypes SICILY • 1 dd; Acirezza (type locality); University of Catania, Aradas collection • 2 dd; Acitrezza; Civico Museo di Storia Naturale, Milano, Mo28763, Mo28771.

Other material examined

CORSICA • 2 lv; Sec St Antonio, CORSICABENTHOS stn CSXX; 41°20.4′ N, 9°10.9′ E; 43 m depth; used for DNA sequencing; MNHN-IM-2019-13658, 13659 • 2 lv; off South coasts, CORSICABENTHOS stn CSXX; 41°20.4′ N, 9°10.8′ E; 42 m depth; used for DNA sequencing; MNHN-IM-2019-14585, 14586.

CROATIA • 4 dd; Velirat; “ Jujubinus goniobasis Coen, 1937 fide Monterosato”; MCZR-M-11728.

CYPRUS • 14 dd; Kerinia; (13 dd +1 dd form concinnus) “ Kerinia (Cipro) Lm. 1899 +vr. Kerinia copia a Coen”; MCZR-M-11707.

FRANCE • 6 dd; coasts of the Pyrénées-Orientales; “Roussillon”; MCZR-M-11774.

GREECE • 4 dd; Preveza; “Spiaggia di Prevesa, Jonio”; MCZR-M-11735.

MALTA • 17 dd; unprecised locality; as “ Mirulinus rudi-striatus, Monts. Malta!”; MCZR-M-11702 • 24 dd; unprecised locality; “Malta”; MCZR-M-11732• 1 dd; unprecised locality; “Malta”; MCZR-M-11758 • 2 lv; Gozo Is., Xwejni Bay; 36°04′48.62″ N, 14°14′50.80″ E; 10 m depth; on P. oceanica, used for DNA sequencing; BAU2676.1, BAU2676.2.

SICILY • 12 dd; Palermo, Arenella; “Arenella”; MCZR-M-25224 • 2 dd; Lampedusa; “Lampedusa”; MCZR-M-11766 • 11 dd; Palermo, Romagnolo; “Romagnolo (coraliné) 12 giug. 1907”; MCZR-M-11756 • 8 dd; Palermo, Romagnolo; “vr. Romagnoli monts copia a Cossmann 1913”; MCZR-M-11707.

Description

SHELL. Shell of large size for the genus, height 6.5–10.3 mm, width 5.6–7.1 mm, height/width ratio 1.34– 1.45, conical, light. Protoconch seemingly smooth, of ca 1 whorl, 0.34–0.35 mm in width. Teleoconch of 6.5–7.0 slightly convex whorls. Sculpture of 5–6 flat, closely set abapical spiral cords of about the same strength, including the 2–3 peripheral ones forming the peripheral cord, slightly shouldered, and 8–9 regularly spaced, basal spiral cords large and flat. Suture well incised. Teleoconch surface covered by barely visible prosocline growth striae irregularly set and interspaces adorned with strong prosocline lamellae. Base convex, umbilicus closed also in juveniles, covered with a white callus. Aperture quadrangular, with columellar callus thickened in the median portion. Interior of the aperture whitish, nacreous.

COLOURATION. Colour of protoconch and initial teleoconch whorls bright whitish- pinkish; remaining whorls and base cream or whitish striated by fine brownish-reddish opisthocline or orthocline lines.

Málaga, Spain. M–O. J. sartorii Aradas & Maggiore, 1840, RUC, syntype of Trochus sartorii, height 10.2 mm. Acitrezza, Sicily, Italy. P–R. J. fraterculus Monterosato, 1889, CS-PM, height 5.4 mm, Borj El Hsar (34°42′38″ N, 11°09′04″ E), Kerkennah Islands, Tunisia. S–U. J. depictus (Deshayes, 1835), CS-PM, height 8.2 mm, Giannutri Island (42°15′07.05″ N, 11°05′31.51″ E), Tuscany, Italy, on P. oceanica, 20 m depth. V–X. J. ruscurianus (Weinkauff, 1868), BAU2858.1, height 4.5 mm, Playazo de Rodalquilar, Spain. Scale bars = 2 mm.

SOFT PARTS. Epipodial tentacles whitish, densely covered by tiny purplish speckles interconnected to create an irregular network and sparingly white spots. Foot background reddish-creamy or reddish-brown mottled with darker blotches and basal white strips; sole white. Cephalic tentacles whitish, with a dorsal purplish stripe and densely covered by small purplish speckles. Eye stalks red-brownish; eyes black encircled by dark brown with a ventral white spot. Snout reddish, creamy terminal band with a thin dark terminal strip.

Distribution

Sicily (Aradas & Maggiore 1840), Lampedusa, Cyprus and Malta; Corsica; Puntebianche (Veli Rat) Croatia (Coen 1937); living specimens at depths of 10– 42 m.

Remarks

In the Monterosato collection, one vial (MCZR-M-11728) is preserved containing 4 specimens with the label handwritten by Monterosato reading “ goniobasis Mont. Velirat!”, which clearly refers to the taxon subsequently described as J. goniobasis Coen, 1937. Despite the slightly more elevated form, the sculpture is very similar to that of J. sartorii, and we consider the two taxa as synonyms.

Jujubinus sartorii differs from J. exasperatus, J. pseudogravinae, J. gravinae and J. dianiensis sp. nov. in the complete or partial absence of tubercles on the spiral cords; from J. vexationis (Madeira) and J. swinneni sp. nov. (Canary Islands) in its stronger sculptures; from J. superum sp. nov. and J. vulgaris in its stouter outline, and stronger sculpture; from J. ruscurianus (Western Mediterranean) in its usually larger size and stronger sculpture (strong lamellae in the interspaces in J. sartorii vs fine prosocline lamellae in J. ruscurianus); from J. elenchoides in its smaller size and a fewer and stronger spiral cords; from J. kyrnos sp. nov. in its more slender shape and stronger sculpture (strong lamellae in the interspaces in J. sartorii vs fine prosocline lamellae in J. ruscurianus); from J. depictus mostly in the outline (more cyrtoconoid in J. depictus) colouration (bright whitish-pinkish in J. sartorii vs reddish, reddish brown or whitish-reddish background with white blotches in J. depictus). See under J. fraterculus, J. gofasi sp. nov., J. dianiensis, J. striatus, J. smaragdinus, J. inopinatus sp. nov., J. angustibasis sp. nov., J. dispar, for comparative remarks.