Nine new species of Muricidae Rafinesque, 1815 (Mollusca, Gastropoda) from the French Antilles
Author
Garrigues, Bernard
Chemin de Ronde, F- 47260 Castelmoron-sur-Lot (France)
bernardgarrigues@yahoo.fr
Author
Merle, Didier
Sorbonne Universités, CR 2 P, MNHN, CNRS, UPMC - Paris 6, Muséum national d’Histoire naturelle, Département Histoire de la Terre, case postale 38, 57 rue Cuvier, F- 75231 Paris cedex 05 (France)
dmerle@mnhn.fr
text
Zoosystema
2014
2014-12-26
36
4
841
864
http://dx.doi.org/10.5252/z2014n4a7
journal article
174292
10.5252/z2014n4a7
cce9517d-1ebc-4cb2-a87d-f9b25099ffa4
1638-9387
5159677
Typhinellus lamyi
n. sp.
(
Figs 2
A-F;
11
A)
TYPE MATERIAL. —
Holotype
(
MNHN-IM-2013-7776
), DNA sequenced (GenBank no.
KJ591665
), KARUBENTHOS: stn GD35,
Port Louis
,
16°22.77’N
,
61°34.19’W
, at
66 m
deep
;
one
paratype
(
MNHN-IM-2013-20576
), DNA sequenced (not tissue-clipped), KARUBENTHOS: stn GD55,
Fajou Island
,
16°22.48’N
,
61°35.46’W
, at
85 m
deep; one paratype (coll. DL),
East of Fajou Island
, in
80-90 m
deep; one paratype (coll. BG),
East of Fajou Island
, in
80-90 m
deep.
TYPE
LOCALITY. —
Guadeloupe
,
Port Louis
,
16°22.77’N
,
61°34.19’W
(stn GD35) at
66 m
deep.
ETYMOLOGY. — Named in honour of Dominique Lamy.
DESCRIPTION OF THE
HOLOTYPE
Protoconch of 1.75 whorls.Teleoconch, H
13.1 mm
, D
5.9 mm
. Low spire of fours whorls. Last whorl of 81% of the total length. Shoulder angulation sharp. Apical angle of 85°. Suture impressed crossed by a laminar extension connecting the shoulder spine to the preceding teleoconch whorl. Spiral sculpture: IP on the sutural ramp, P1 corresponding to anal tube, P2, P3, P4 and P5 on convex part of the whorl, P6, ADP, MP on siphonal canal. Primary cords slightly marked near the varices. P1 and P2 appearing since the first whorl. Primary cord spines on IP, P2, P3, P4 and P5. On the last whorl, broad varical flange up to the extremity of siphonal canal. Four ventrally sealed anal tubes (P1 spine), abapically and dorsally recurved, forming an angle of 30° with the axis of the shell. Last tube intact, others cut down. Axial sculpture: four varices since the first whorl. Aperture rounded. Columellar lip smooth, erected.No anal sulcus. Outer lip erected and smooth within. Siphonal canal winding, ventrally sealed, dorsally curved, up to 40.4% of the total length. Microsculpture of growing grooves. Shell chocolate, beige and white. Anal tubes (P1), siphonal canal and aperture whitish. Several dark blotches on the ventral part of the siphonal canal (3 blotches) and the outer lip (4 blotches). Operculum and radula unknown.
COMPARISON
Because of its moderately high shape and its developed cords spines,
Typhinellus lamyi
n. sp.
should be compared with
T. occlusus
(Garrard, 1963)
recorded from the
Philippines
and
New Caledonia
(
80-200 m
deep) and with
T. labiatus
(Cristofori & Jan, 1832)
. Specimens of
T. occlusus
can resemble
T. lamyi
n. sp.
in bearing three dark blotches on the siphonal canal (
Fig. 2I
and
Hardy 2014
); however,
T. occlusus
(
Fig. 2I
) differs mainly by a smaller aperture, a longer siphonal canal (45.6 % of the total length) and a larger size up to
25-35 mm
(instead
9.5-13 mm
). On the biogeographical point of view,
T. labiatus
is closer to
T. lamyi
n. sp.
, both species living in the Atlantic Ocean. The shape of
T. labiatus
is rather similar to that of
T. lamyi
n. sp.
and as for
T. occlusus
, several specimens of
T. labiatus
can resemble
T. lamyi
n. sp.
in bearing three dark blotches on the siphonal canal (
Hardy 2014
).
T. labiatus
(
Fig. 2G, H
) differs by its spiral sculpture; it displays secondary cords spines s2 and s4 missing in
T. lamyi
n. sp.
(
Fig. 11A
).