Ittibittium oryza (Mörch, 1876)

Cavallari, Daniel Caracanhas, Almeida, Sérgio Mendonça & Simone, Luiz Ricardo L., 2020, Cerithiidae, Litiopidae, Modulidae and Planaxidae (Gastropoda, Cerithioidea) collected by the Marion Dufresne MD 55 expedition in southeastern Brazil, Papéis Avulsos de Zoologia 60, pp. 1-10 : 2

publication ID	https://doi.org/ 10.11606/1807-0205/2020.60.35
persistent identifier	https://treatment.plazi.org/id/7F59DD41-FB75-CA7C-3EA5-FF18FBCE12C1
treatment provided by	Carolina
scientific name	Ittibittium oryza (Mörch, 1876)
status

Treatment

Ittibittium oryza (Mörch, 1876) View in CoL

( Figs. 1‑6 View Figures 1-20 )

Synonymy see Faber (2005: 82). Complement:

“ Bittium View in CoL ” turriculum: Redfern, 2001: 21, figs. 88A, 88B (non Usticke, 1969).

Type locality: Saint Thomas.

Distribution: Caribbean, from the Bahamas and Greater Antilles to Santa Lucia ( Faber, 2005).

New occurrence: Southwestern Atlantic, Brazil, off Espírito Santo.

Material examined: Brazil; off Espírito Santo: Abrolhos Continental Slope , 18°50′S, 37°57′W, 60 m, MNHN, 1 shell ( MD55 , sta. DC83 , 28/v/1987) GoogleMaps ; Jaseur Seamount , 20°27′S, 35°54′W, 54 m, MNHN, 2 shells ( MD55 , sta. DC34 ; 15/v/1987) GoogleMaps ; Victoria Bank , 20°32′S, 38°10′W, 52 m, MZSP 122161 View Materials , 5 View Materials shells ( MD55 , sta. DC22 , 13/v/1987) GoogleMaps ; Davis Bank , 20°39′S, 34°41′W, 60 m, MNHN, 2 shells, MZSP 147431 View Materials , 1 View Materials shell ( MD55 , sta. DC40 , 17/v/1987) GoogleMaps ; Jaseur Seamount , eastern summit, 20°42′S, 35°22′W, 15-82 m, 1 shell ( MD55 , sta. DC35 , 17/v/1987; among coral sand) GoogleMaps ; Dogaressa Bank , 20°50′S, 34°44′W, 63 m, MNHN, 1 shell ( MD55 , sta. DC43 , 17/v/1987) GoogleMaps ; 20°54′S, 34°01′W, 60 m, MNHN, 2 shells ( MD55 , sta. DC42 , 17/v/1987) GoogleMaps .

Additional (non‑MD55) material: Caribbean; Bahamas: Grand Bahama Island, Sandy Beran’s Cay, Dead Man’s Reef , at the beach, 26°34′45″N, 78°51′45″W, ANSP 371127 View Materials , 43 View Materials shells (J. Worsfold col.) GoogleMaps .

Measurements (± standard deviation, in mm; n = 14): W = 1.59 ± 0.18; H = 3.61 ± 0.46; w = 0.62 ± 0.14; h = 1.03 ± 0.16.

Remarks: Conchologically, the MD 55 specimens are virtually identical to their Caribbean counterparts, even considering a wide variation in color, outline and sculpture. In specimens from both locations, the ground col- or is variable from homogeneously white ( Figs. 5, 6 View Figures 1-20 ) to white and orange ( Figs. 1, 2 View Figures 1-20 ), with a range of intermediary morphotypes. Shells are invariably turriform, with convex whorls sculptured by thin, closely-spaced spiral cords. The most prominent spiral cord forms a distinct keel on each whorl. This peripheral keel may be somewhat smooth, with wide nodules more easily distinguished in apical view, or bear well-marked angular knobs ( Figs. 3, 4 View Figures 1-20 ). The new records presented herein are distant from the currently known distribution, expanding the range of the species from the Caribbean to the Southwestern Atlantic.