New data on recently described Chilean trophonines (Gastropoda: Muricidae), description of a new species and notes of their occurrence at a cold seep site
Author
Houart, Roland
Author
Sellanes, Javier
text
Zootaxa
2006
1222
53
68
journal article
50733
10.5281/zenodo.273425
9f5ac2e9-2f56-4555-a75c-f0b33f56a3ea
11755326
273425
Trophon vangoethemi
Houart, 2003
(
Figs 11–14
,
31–32
)
Trophon vangoethemi
Houart, 2003
: 104
, figs 6–7, 31, 32, 34
Type
material
Holotype
IRSNB
IG 29715/513 (
16.9mm
),
Paratypes
: 1
MNHN
(
14.7mm
), 2 RH (17.1 &
12.4mm
), 1 G.T. Poppe coll. (16.0mm).
Chile
, trawled off Itata, north of Concepción, in about
350m
, muddy bottom,
36°50’S
,
73°03’W
.
Additional material examined
R/V
AGOR
Vidal Gormáz, (Sta. AGT 2,
30/11/2003
), off Concepción,
Chile
,
36°25.49’S
,
73°35.72’W
,
530m
, 1dd (
18.14mm
) (MNHNCL201647); R/V
AGOR
Vidal Gormáz off Concepción (Sta. AGT 4,
10/10/2004
),
36º10.50’S
,
73º35.95’W
,
563–613m
, 8 lv. (6 JS, 2 RH) (from
14.82 to 18.49mm
).
Remarks
All known specimens are very similar though some of the new specimens reach a larger size and have eroded axial lamellae.
The radula (
Fig. 32
) is rachiglossate with a rachidian tooth bearing a long, broad, central cusp, a small, lateral denticle and a moderately long, broad, lateral cusp. A small denticle is occasionally present between the central cusp and the lateral denticle.
The operculum (
Fig. 31
) is elliptical with a terminal nucleus.