Mangelia thapsiae ( Oberling 1970 )

Öztürk, Bilal, 2021, Mangelia (Gastropoda, Conoidea) species of the Turkish coasts with description of Mangelia vanaartseni sp. nov., Zootaxa 4933 (2), pp. 241-262 : 255

Mangelia thapsiae ( Oberling 1970)

( Fig. 16 )

Cythara thapsiae Oberling 1970: 1–7

Mangiliella fieldeni Van Aartsen & Fehr de-Wal 1978: 102, 104, fig. 4

Materials: 15.09.2005, Yumurtalık (Iskenderun Bay), Levantine Sea, sand, 5 m, 2 spm ( ESFM - GAS/2005-102 ) ; 20.09.2005, Ovacık (Silifke), Levantine Sea, sand, 5 m, 2 spm + 3 sh ( ESFM - GAS/2005-103 ) .

Remarks: Shell with a paucispiral protoconch and thick axial ribs on the teleoconch whorls (on the body whorl 9–11 ribs). There is a spiral sculpture consisting of relatively thick cords occurring over the ribs. Posterior sinus deep, labial varix well developed. Mangelia thapsiae [= Mangelia fieldeni ( Van Aartsen & Fehr-de Wal 1978)] can be misidentified as M. paciniana and M. sandrii . The species is different from M. paciniana by its paucispiral protoconch, and from M. sandrii by its spiral sculpture being thicker.

Distribution: Mediterranean Sea ( Van Aartsen & Fehr-de Wal 1978). Turkish Coasts: Levantine Sea ( Buzzurro & Greppi 1996).

Figures

FIGURE 16. Mangelia thapsiae: ventral (A, B) and dorsal (C) views of two specimens and protoconch (D) of specimen B (A= 9.1 mm, B=C= 8.4 mm, Iskenderun Bay, 5 m).