Inella, Bayle, 1879

Fernandes, Maurício Romulo, 2024, Triphoridae (Gastropoda) from Martinique sampled by the MADIBENTHOS expedition, with notes on shallow-water species from Guadeloupe, Zoosystema 46 (18), pp. 457-503 : 464

“ Inella ” sp.

( Fig. 5 )

MATERIAL EXAMINED. — Martinique. MADIBENTHOS. ‘Sud Caraibe’ • 1 sh; sta. AD214; MNHN.

GEOGRAPHIC DISTRIBUTION. — Only known from Martinique.

BATHYMETRIC DISTRIBUTION. — Only known from 70 m.

REMARKS

This morph is allocated under the “pseudo Inella ” group ( Fernandes & Pimenta 2019a), because it shows a paucispiral protoconch similar to Inella s.s. and an elongated shell shape, but the late emergence of the median spiral cord of teleoconch makes its generic allocation uncertain. The median spiral cord emerges narrowly in the fourth/fifth teleoconch whorl, and after three whorls it starts to be more developed than the adapical spiral cord ( Fig. 5B ), but never reaching the same size than the abapical one. Owing to the color pattern, with narrow, brown axial patches ( Fig. 5A ), and the more developed abapical spiral cord, “ Inella ” sp. resembles “ Inella ” harryleei Rolán & Fernández-Garcés, 2008 . However, the adult shell of “ Inella ” sp. is much smaller (5.8 mm vs up to 18.3 mm) and the median spiral cord becomes more prominent than the adapical one (contrary to “ I ”. harryleei , whose median cord is always smaller than remaining cords).

Figures

FIG. 5. — “Inella” sp., MNHN, sta. AD214, 5.8 mm. Scale bars: A, 1 mm, B-E, 200 μm.