Pseudolatirus Bellardi, 1884 revisited, with the description of two new genera and five new species (Neogastropoda: Fasciolariidae)
Author
Kantor, Yuri I.
48F89A50-4CAC-4143-9D8B-73BA82735EC9
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninski prospect 33, 119071, Moscow, Russian Federation. Institut de Systématique, Evolution, Biodiversité ISYEB - UMR 7205 - CNRS, MNHN, UPMC, EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP 26, F- 75005, Paris, France. Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA 19103 - 1195, USA.
kantor.yuri1956@gmail.com
Author
Fedosov, Alexander E.
65A25D60-A36D-48E5-9A03-B21207A0FAE2
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninski prospect 33, 119071, Moscow, Russian Federation. Institut de Systématique, Evolution, Biodiversité ISYEB - UMR 7205 - CNRS, MNHN, UPMC, EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP 26, F- 75005, Paris, France. Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA 19103 - 1195, USA.
fedosovalexander@gmail.com
Author
Snyder, Martin Avery
4263AED1-77F3-4C3E-82E1-804BE7AEBDE3
dr.martin.snyder@gmail.com
Author
Bouchet, Philippe
FC9098A4-8374-4A9A-AD34-475E3AAF963A
pbouchet@mnhn.fr
text
European Journal of Taxonomy
2018
2018-05-07
433
1
57
journal article
22377
10.5852/ejt.2018.433
6e9cff4b-1933-4022-99e2-b20ac41a65f1
3787853
F4E9A74F-FAAE-4CE4-A959-D86C9633882D
Vermeijius retiarius
(
Martens, 1901
)
gen. et comb. nov.
Fig. 11K
Fusus
?
retiarius
Martens, 1901: 22
.
Fusus
?
retiarius
–
Martens 1904: 104–105
, pl. 2, fig. 4.
Fusinus retiarius
–
Hadorn & Fraussen 2002: 64
, 66, 68, figs 3–8, 21. —
Mallard & Robin 2017: 81
.
Type material
Lectotype
SOMALIA
: dd, 38.5 × 15.7 mm, off
southern Somalia
,
01º49′ N
,
45°29′ E
,
1134 m
,
Valdivia
, stn 256, designated by
Hadorn & Fraussen (2002)
(
ZMB
61012).
Sequenced material
SOUTH
MADAGASCAR
: ATIMO VATAE:
1 lv
, stn CP3595, South of Pointe Barrow,
25°35′ S
,
44°15′ E
,
821–910 m
(
MNHN
IM-2009-15087).
Description
Shell large for genus, up to
57 mm
in length, strong, broadly fusiform, gradually constricting to medium long, sinuous, coaxial siphonal canal. Protoconch dome-shaped, paucispiral, of 1.5 convex smooth whorls, greyish, semitransparent, with 3 weak arcuate axial ribs at transition to teleoconch. Protoconch/ teleoconch discontinuity distinct, marked by appearance of teleoconch spiral sculpture. Protoconch diameter
1000 µm
, exposed height
700 µm
. Teleoconch with strongly convex whorls. Aperture broad, oval, columella smooth. Spiral sculpture of moderately strong cords, beaded at intersection with axial ribs and much thinner, although distinct, secondary cords, covering interspaces between primary cords; 4–5 primary spiral cords on spire whorls, including penultimate. Axial ribs not aligned along spire, 11– 12 per whorl. Background colour pale flesh to nearly white. Operculum elongate, leaf-shaped, spanning nearly entire aperture. Nucleus terminal.
Radula (
Hadorn & Fraussen 2002
: fig. 21) with medium broad, arcuate, lateral teeth, with attenuated outer anterior corner, producing medium long ‘handle’. Lateral teeth with five slightly recurved cusps, outermost longest, more distant from others. Additional innermost short, but distinct, cusp present. Central tooth small, subrectangular, with three very short cusps, medium longest.
Distribution
East Africa, from
Somalia
to South
Madagascar
, in
500–1134 m
.
Remarks
In the COI-based tree
Vermeijius retiarius
gen. et comb. nov.
did not cluster with
V. pallidus
gen. et comb. nov.
and
V. virginiae
gen. et comb. nov.
, but in the three genes tree it was recovered as a sister group to the clade combining these two species. The relationships are highly supported in the Bayesian analysis, therefore we include it in
Vermeijius
gen. nov.
It differs from the two sequenced species by a more stout shell with paucispiral protoconch.