Strebloceras oliverioi Vannozzi, 2019

Vannozzi, Angelo, 2023, The Caecidae from BIOMAGLO Expedition in the Mayotte-Glorieuses area (Mollusca, Gastropoda), Zoosystema 45 (12), pp. 421-434 : 431-432

Strebloceras oliverioi Vannozzi, 2019

( Fig. 6 A-D)

Strebloceras oliverioi Vannozzi, 2019c: 148 , fig. 1a-d.

Strebloceras sp. A Vannozzi, 2016: 118 , fig. 3G-M.

TYPE MATERIAL. — Holotype. Yemen • dd; offshore Yemen; 14°47’12”N, 42°33’22”E; 76 m depth; MZUB 60080 .

Paratype. Sudan • 1 dd; Sha’ab Rumi; 60 m depth; SCUBA, 3.II.1992; MCZR .

TYPE LOCALITY. — Southern Red Sea, offshore Yemen, 14°47’12”N, 42°33’22”E, 76 m depth.

MATERIAL EXAMINED. — Mayotte • 1 dd; Mozambique Channel , NW Mayotte, BIOMAGLO Stn DW4848; 12°35’S, 44°55’E; 399- 402 m depth; 30.I.2017; MNHN-IM-2022-17519 .

DISTRIBUTION. — Known from southern Red Sea and Mayotte ( Vannozzi 2019c).

DIAGNOSIS. — Shell of average size for the genus. Protoconch low trochospiral, broad, of about 2.25 whorls. Sinusigera notch very shallow. Teleoconch tubular, twisted, with circular cross section. Teleoconch initially tapering, then slowly growing until the aperture. Sculpture of irregular collabral ribs. Aperture simple. Length 2 mm.

REMARKS

A single specimen was found in the examined material. Apart from the chipped aperture, the shell is otherwise perfect and agrees well with the type material, although the tube is slightly broader. This is the third known specimen of this species and this finding extends its distribution beyond the Red Sea.

Figures

FIG. 6. — Strebloceras oliverioi Vannozzi, 2019 from Stn DW4848, MNHN-IM-2022-17519: A-C, different views of the specimen; D, protoconch. Arrow marks protoconch/teleoconch transition. Scale bar: A-C, 1 mm; D, 100 µm.