Comparative Morphology and Redescription of Three Species ofCalliostoma(Gastropoda, Trochoidea) from Brazilian Coast

Description of a new species of Calliostoma (Gastropoda, Calliostomatidae) from Southeastern Brazil

“…Marshall (1995) also observed this pattern in an excellent revision of calliostomatids from New Caledonia. Calliostoma tupinamba has not such a pattern, which is also absent in Calliostoma torrei Clench & Aguayo, 1940 (following Harasewych 2006), Calliostoma depictum Dall, 1927 and Calliostoma adspersum (Philippi, 1851) ( Dornellas and Simone in press ). As protoconch sculpture descriptions are lacking in major revisions of the fauna of the western Atlantic (see Clench and Turner 1960 ; Quinn 1992 ) it is hard to know whether the honeycomb pattern is present in the western Atlantic Calliostoma .…”

“…Radula ( Figs 20–28 ): symmetrical, arched. Radichian ( Figs 21, 25 : rc) ~1/10 of total radula width, with very large base slightly rounded in shape; slender shaft; cutting edge turned posteriorly, tip narrowly tapered; finely serrated with delicate, thin, pointed and slightly elongated cusps on both sides; apical portion short, with rounded tip.…”

“…Their ground colors usually are slightly yellowish or brownish, while their secondary coloration consists of white, red or reddish-brown blotches ( Hickman and McLean 1990 ). On anatomical grounds, Calliostoma shows some apparently unique features, such as the presence of an ampulla in females, the reduction or lack of cephalic lappets, the presence of a pseudoproboscis and the intestinal loop placed outside of the haemocoel ( Randles 1905 ; Fretter and Graham 1962 ; Sá and Coelho 1986 ; Dornellas and Simone in press ; Dornellas personal observation).…”

Morphological phylogeny of the Tegulinae (Mollusca: Vetigastropoda) reinforces a Turbinidae position

“…A total of 323 specimens were dissected. Data from Gaza compta Simone and Cunha, 2006, Lithopoma tectum (Lightfoot, 1786), Calliostoma tupinamba Dornellas, 2012, C. adspersum (Philippi, 1851), Solariella obscura (Couthouy, 1838), Carolesia blakei and Omphalius nigerrimus (Gmelin, 1791) were compiled from the literature (Monteiro and Coelho, 2002; Simone and Cunha, 2006; Simone, 2011; Dornellas, 2012; Dornellas and Simone, 2013, 2015; Güller and Zelaya, 2014; respectively), complemented by novel photographic material. The last two species listed were crucial in improving ingroup taxonomic coverage as there was no material available for dissection; they were analyzed in a separate analysis.…”

“…Specimens were preserved in 70% EtOH, and dissected under a stereomicroscope (Zeiss DV8) with an attached camera lucida for illustrations. Anatomical study and terminology follows Fretter and Graham (); Hickman and McLean (); Sasaki (), Simone (), and Dornellas and Simone (). Radulae were prepared for SEM in the MZSP (LEICA model LEO 440) and the USNM (HITACHI model TM3000); radular terminology follows Hickman (, ) and Hickman and McLean ().…”