Mangelia callosa ( Nordsieck 1977 )

Öztürk, Bilal, 2021, Mangelia (Gastropoda, Conoidea) species of the Turkish coasts with description of Mangelia vanaartseni sp. nov., Zootaxa 4933 (2), pp. 241-262 : 246

Mangelia callosa ( Nordsieck 1977)

( Fig. 4 )

Cythara derelicta callosa Nordsieck 1977: 36 , 85, Pl. 6, fig. 46.

Material: 24.09.2005, Antalya Bay, Levantine Sea , rocky habitat, 0.1–3 m, 1 spm ( ESFM-GAS/2005-104 ) .

Remarks: The original description of the species as Cythara derelicta callosa was by Nordsieck (1977) based on a specimen from Attika (Saronicos Bay, Aegean Sea). Cachia (1995) later renamed it Mangelia callosa . Shell with brown paucispiral protoconch. On the teleoconch whorls thick axial ribs (8 on the body whorl) as wide as their interspaces and many fine spirals with spaced stronger ones constitute the sculpture. Posterior sinus deep, siphonal canal wide and labrum thickened. The whorls are angulated and more evident on the body whorl. Based on its shell characteristics, M. callosa appears most similar to M. barashi . Differences between this species and other congeneric ones were noted in detail by Cachia (1995).

Distribution: The species is probably endemic to the Eastern Mediterranean ( Mifsud & Ovalis 2003). Turkish coasts: Levantine Sea ( Aslan & Ovalis 2017).

Figures

FIGURE 4. Mangelia callosa: ventral view of a specimen (A) and its protoconch (B). (A= 4.8 mm)