Dasyskenea dibellai
Nofroni, Renda, Agamennone & Giacobbe, 2022
Western Sicily, at least in the low circalittoral.
 
« Shell small sized, whitish, matt, almost planispiral. Apex depressed, slightly protruding over the last body-whorl, which weakly degrades as it approaches the peristome. Protoconch formed by about 1.25 whorls without sculpture, with an “S” shape, therefore with an initially left-handed and then regularly right-handed winding. […] Teleoconch approximately 1.40 whorls rapidly increasing, with deep sutures. The sculpture of the last whorl of teleoconch consists of 36 irregular, flat, almost vertical axial ribs running from the upper to the lower suture. These main ribs alternate with semi-ribs that start from the sutures and are interrupted before reaching the periphery. » – Nofroni, Renda, Agamennone & Giacobbe: “Dasyskenea dibellai n.sp. from the Central Mediterranean Sea (Gastropoda Vetigastropoda Skeneidae)”, Biodiversity Journal vol. 13(1), march 2022, p.158

133m deep, 6.8 miles off Marsala, W. Sicilia. Type locality. 1mm.
Original pictures provided by A. Nappo (IT).
– (CC BY-NC-SA) –
« Often these half-ribs are partially or completely fused with the main ribs. Surface between the coasts crossed by very numerous and very thin growth striae. Spiral sculpture, present only in the first half turn of the teleoconch, consisting of two thin cords starting from the separation line between protoconch and teleoconch; one runs centrally along the dorsal side and the other [along] the basal side. » – Ibid. Umbilicus wide; aperture almost round, entire.

Paratypes. 0,8-1mm.
Original pictures provided by A. Nappo (IT).
– (CC BY-NC-SA) –

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