Calliostoma cf. moebiusi Strebel, 1905

Luca, Javier Di & Zelaya, Diego G., 2019, Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity, Zootaxa 4544 (1), pp. 41-78 : 45

Calliostoma cf. moebiusi Strebel, 1905

Fig. 2E

Calliostoma möbiusi Strebel, 1905a: 133 , pl. 5, fig. 22; Melvill & Standen, 1912: 121

Examined material. 1 an. and 5 sh. (MACN-In 40665).

Description. Shell width to 10.1 mm (up to 16.6 mm according to Strebel 1905a); pyramidal, solid. Protoconch of 1.25 convex whorls. Teleoconch of up to 5 whorls, almost straight in outline; last whorl comprising about 70% of total shell height. Suture impressed. Surface pink, with narrow, white spiral bands; firsts two whorls sculptured with 3 or 4 spiral cords, vanishing on subsequent whorls; last whorl with a weak cord at base. In addition, faint growth lines are evident along all teleoconch whorls. Aperture subquadrate, interior iridescent; columellar callus expanded over the umbilical area. Operculum rounded, multispiral; pale brown, translucent.

Remarks. The material studied here resembles C. moebiusi Strebel, 1905 . However it differs by having teleoconch sculpture less developed.

Figures

FIGURE 2. A. Parmaphorella melvilli (Thiele, 1912), MACN-In 40660, scale bar = 4 mm. B. Puncturella conica (d´Orbigny, 1841), MACN-In 40661, scale bar = 2 mm. C. Anatoma conica (d´Orbigny, 1841), MACN-In 40662, scale bar = 1 mm. D. Scissurella clathrata Strebel, 1908, MACN-In 40663, scale bar = 0.5 mm. E. Calliostoma cf. moebiusi Strebel, 1905, MACN- In 40665, scale bar = 4 mm. F. Margarella expansa (Sowerby, 1838), MACN-In 40666, scale bar = 2 mm. G. Ganesa sp., MACN-In 40667, scale bar = 1 mm. H. Liotella crassicostata (Strebel, 1908), MACN-In 40664, scale bar = 0.25 mm. I. Colpospirella algida (Melvill & Standen, 1912), MACN-In 40668, scale bar = 2 mm. J. “Cirsotrema” strebeli Zelaya & Güller, 2017, MACN-In 40673, scale bar = 2 mm. K. Cerithiopsis (?) caelatum (Gould, 1849), MACN-In 40677, scale bar = 2 mm. L. Cerithiopsilla burdwoodiana (Melvill & Standen, 1912), MACN-In 40674, scale bar = 1 mm. M. Cerithiopsilla sp., MACN-In 40675, scale bar = 1 mm. N. Eumetula michaelseni (Strebel, 1905), MACN-In 40676, scale bar = 1 mm.