Famelica pukua, Abbate & V. & Lima & L. & Simone, 2022

Abbate, Daniel, V. Lima, Patricia Oristanio & L. Simone, Luiz Ricardo, 2022, The genera Famelica Bouchet & Warén, 1980 and Aliceia Dautzenberg & Fischer, 1897 (Conoidea Raphitomidae) collected by the MD 55 expedition in the Brazilian coast with descriptions of two new species, Zoosystema 44 (23), pp. 565-574 : 570

Famelica pukua n. sp.

( Fig. 4 )

urn:lsid:zoobank.org:act:47510106-D27C-4998-9E1E-163F6C85428C

HOLOTYPE. — Brazil • Rio de Janeiro; Bacia de Campos , off Campos dos Goytacazes ; 21°09’43”S, 40°10’18”W; 902 m depth [Mapem Project]; MZSP 116406 ( Fig. 4 ).

TYPE LOCALITY. — Brazil, Rio de Janeiro; Bacia de Campos, off Campos dos Goytacazes, 21°09’43”S, 40°10’18”W, 902 m.

ETYMOLOGY. — The specific epithet is a Latinization derived from Guarani native South America language, puku, meaning elongated, long, an allusion to the elongated shape of the shell.

DIAGNOSIS. — Shell c. 9 mm, spire angle 24°. Protoconch with low carina in inferior third mostly marked by axial nodes in its middle whorls only. Whorls weakly rounded; sculpture low spiral cords, with interspaces of equal width of cords; except for smooth subsutural region. Inner lip rounded, concave, lacking folds.

DESCRIPTION

Shell ( Fig. 4 )

About 9 mm, fusiform-elongated, width c. 27% of length; with about 9 convex whorls. Colour white, with yellowish protoconch ( Fig. 4A, B ). Protoconch ( Fig. 4C ) with middle carina, c. 5 whorls, c. 400 µm width; consisting of three parts: 1) first part blunt, smooth, with c. 1.5 whorls; transition indistinct; 2) second part c. 1.5-2 whorls, middle carinated, superior region of carina smooth, inferior sculptured by vertical regular riblets from carina up to inferior suture; and 3) last c. 1 whorl smooth, bearing only middle, low carina; transition with teleoconch sigmoid.Teleoconch whorls slightly and uniformly convex; sculptured by uniform set of spiral, low cords, c. 12 in penultimate whorl, with interspaces equal to their width; subsutural smooth region occupying about 1/5 of whorl height. Suture well-marked. Spire angle about. 24°. Aperture and canal analysis precluded by fracture of about 1/4 whorl preceding peristome; elongated, about twice as long as wide. Inner and outer lips smooth. Canal short, pointed. No umbilicus.

Measurements (length × width in mm)

Holotype: 8.8 by 2.4.

Distribution

Only known from type locality.

Habitat

902 m.

Figures

FIG. 4. — Shell of Famelica pukua n. sp. holotype MZSP 116406: A, frontal view (L 8.8 mm); B, dorsal view; C, apex, two views; D, detail of penultimate whorl. Scales bars: 0.5 mm.