Lamellariinae d'Orbigny 1841
Creators: name: Fassio, Giulia
name: Stefani, Matteo
name: Russini, Valeria
name: Buge, Barbara
name: Bouchet, Philippe
name: Treneman, Nancy
name: Malaquias, Manuel António E.
name: Schiaparelli, Stefano
name: Modica, Maria Vittoria
name: Oliverio, Marco
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Velutinidae

description: LAMELLARIINAE D’ORBIGNY, 1841
(FIGS 2, 3, 4H–J, 5A–I, 7A–D, 8A–D, 9C–L, 10D–L, 11D–L)
Lamellariinae d’Orbigny, 1841: 200;
type genus Lamellaria Montagu, 1816.
Coriocellidae Troschel, 1848: 545;
type genus Coriocella Blainville, 1824.
Lamellariidae d’Orbigny, 1841: 200;
type genus Lamellaria Montagu, 1816.
Marseniidae Leach in Gray, 1842: 268 [as Marseniadae];
type genus Marsenia Oken, 1823.
Included genera: Calyptoconcha Bouchet & Warén, 1993, Coriocella Blainville, 1824, Djiboutia Vayssière, 1912, Lamellaria Montagu, 1816, Marseniella Bergh, 1886, Marsenia Oken, 1823, Pacifica Fassio, Bouchet & Oliverio gen. nov., Variolipallium Fassio, Bouchet & Oliverio gen. nov.
Description: Body of small to medium size for the family, 0.5–10.0 cm total length. Shell thin to very thin, from strongly calcified to membranaceus; ear shaped, low to high spire, with expanded aperture; smooth or weakly sculptured by axial growth lines; completely enclosed by the mantle or with a small dorsal fissure. Periostracum thin to not visible.
Protoconch of one to two whorls; protoconch I of 0.46–1.20 whorls, smooth, with subsutural axial folds, nucleus diameter 54–250 μm; protoconch II with or without axial growth lines; protoconch–teleoconch boundary not always distinct.
Mantle flat or dome shaped, outline rounded or polygonal; thick or thin, with or without dorsal warts or tubercles; with anterior siphon fold; texture smooth, wrinkled, jelly- or velvet-like; colour highly variable, almost transparent to white, grey, beige, yellow, orange, red, violet, blue, dark green, brown or black, often patterned with dots, lines or irregular colour patches.
Penis to the right of the right cephalic tentacle, with or without a lateral subterminal papilla.Vas deferens with or without a free loop or, less frequently, several folds in the haemocoel.
Radula reduced taenioglossate, formula 0:1:1:1:0; rachidian tooth base bifurcated or rectangular; rachidian cusp with or without several external denticles; lateral teeth elongated, with a single external pointed cusp, or composed of an external, pointed and bold cusp plus a internal truncated projection; in both cases with or without several denticles.
Jaws homogeneous, short to elongated.
Distribution: Temperate and tropical regions worldwide; 0–4500 m deep.
Remarks: Lamellariines are diagnosed by their reduced taenioglossate radula lacking marginals (formula 0:1:1:1:0), a mantle completely enclosing the shell in most species (the only exception so far being Variolipallium regium) and an anterior siphon.
The name Echinospira was introduced by Krohn, 1853 for Echinospira diaphana Krohn, 1853, based on a (velutinid?) larva collected in the plankton of the Messina Strait (Italy). Based on the original description, we have no clues confidently to identify this animal, which might be one of the cryptic species in either of the two genera (Lamellaria and Marsenia) present in the Central Mediterranean.
Within the examined material, we have recognized the following six lineages that merit recognition at genus level.
description: Published as part of Fassio, Giulia, Stefani, Matteo, Russini, Valeria, Buge, Barbara, Bouchet, Philippe, Treneman, Nancy, Malaquias, Manuel António E., Schiaparelli, Stefano, Modica, Maria Vittoria & Oliverio, Marco, 2023, Neither slugs nor snails: a molecular reappraisal of the gastropod family Velutinidae, pp. 924-964 in Zoological Journal of the Linnean Society 197 (4) on page 951, DOI: 10.1093/zoolinnean/zlac091, http://zenodo.org/record/7814306