Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska
Author
Mclean, James H.
Author
Clark, Roger N.
text
Zootaxa
2023
2023-09-26
5351
2
151
201
http://dx.doi.org/10.11646/zootaxa.5351.2.1
journal article
270509
10.11646/zootaxa.5351.2.1
b3b05d51-3aeb-49c7-bbc1-0365bc92c886
1175-5326
8391375
F34F6B3C-F251-4D8E-B002-A96BD70CA1BE
Beringius amliensis
n. sp.
Figures 9 A–C
urn:lsid:zoobank.org:act:
3B012D06-E9A7-4CB7-9B2C-7AC68130F4BF
Type
locality:
N side of
Amlia Island
, Andreanof Ids.,
Aleutian Is.
,
Alaska
(
52°25.04 N
,
173°45.42 W
),
149 m
(
NMFS 148-201001
-
65
)
.
Type material.
Holotype
:
LACM
3572, 120.7 mm
(
leg.
25
June
, 2010, trawled, R/
V
Ocean Explorer
)
;
Paratypes
:
Pt
1 & 2,
SBMNH 169002
,
72.1
&
56.2mm
, S of
Atka Island
,
Andreanof Ids.
(
51°52.62 N
,
174°33.61 W
),
147 m
.
(
NMFS 23-199701
-
95
); Pt 3,
LACM 3657
,
67.5 mm
, (94-199401-75)
Pt
3,
RNC
4502, 116.6 mm
, N of
Amlia Island
,
Andreanof Ids.
(
51°17.05 N
,
173°58.18 W
),
72 m
.
(
NMFS 94-199401
-
65
)
.
Description:
Shell large Height to
120.7 mm
(
holotype
), pyriform, white to pinkish-tan, periostracum thin, brown, adherent. Protoconch with three whorls; teleconch whorls shouldered, suture deeply impressed. Axial sculpture of rounded, strongly projecting ribs, 10 on the final whorl, interspaces broader than ribs, ribs not extending across base. Spiral sculpture of strong cords (14 on penultimate whorl), each cord sharply bifurcate or trifurcate, interspaces narrower. Aperture broad, less than half of shell height, lip flared and thickened, canal, short, broad.
Radula (
Fig. 9 C
). Rachidian tooth oval, flattened anteriorly and posteriorly. Lateral teeth large, thick, tricuspid, outer cusp thick, broad, tapering, to a curved tip, central and inner cusps much smaller, about 1/3 as long as the outer one, sub-equal in length, inner one slightly broader and flattened on the anterior edge.
Remarks:
This species resembles
Beringius incisus
(Dall, 1907)
(
Fig. 9 D–G
), but differs in being larger, and having coarse, bifurcated and trifurcated spiral cords as opposed to fine spiral lirae. The radula of
B. incisus
, has a smaller, rounder rachidian tooth, and the lateral teeth have a much more pronounced notch, which cuts into the base of the outer cusp (
Fig. 9 G
).
Etymology:
The name is derived from Amlia Island, the
type
locality.
Distribution:
Central Aleutian Islands, known only from the vicinity of Amlia and Atka Islands, Andreanof Ids. (173° to
175° W
). at depths of
72–
147 m
. A short-range endemic.
Habitat:
Found on black sand bottoms with temperatures of 3.7–4.4°C.