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
Laevisipho kessleri
n. sp.
Figure 18 E–G
urn:lsid:zoobank.org:act:
A213A933-2C42-4A28-9E75-B6DE269A66FB
Type
locality:
S of
Seguam Island
,
Aleutian Is.
,
Alaska
(
51°52.62 N
,
172°33.61 W
);
147 m
(
NMFS 23-199701
-
95
)
.
Type material:
Holotype
LACM 3586
,
64.6 mm
. (
leg.
RNC 7
July, 1997, trawled, R/V
Dominator
)
;
Paratypes
:
Pt
1,
LACM 3632
,
74.4 mm
.
S of Seguam Island
, (
51°57.9 N
,
172°17.8 W
),
104 m
(
NMFS 95-199401
-
93
)
;
Pt
2,
SBMNH 169010
,
59.6 mm
, N of
Atka Island
,
Andreanof Ids.
(
52°08.55 N
,
175°16.99 W
),
212 m
(
NMFS 94- 199401
-
156
)
;
Pt
3,
SBMNH 174793
,
66.7 mm
,
Seguam Pass
(5158.35 N, 17236.86 W),
167 m
.
(
NMFS 94-200202
-
192
)
;
Pt
4,
USNM 1606666
,
57.4 mm
. S of
Amlia Island
,
Andreanof Ids.
(
51°57.96 N
,
172°37.93 W
),
220 m
(
NMFS 23-199701
-
79
)
;
Pt
5,
RNC 4519
,
81 mm
. N of
Atka Island
,
Andreanof Ids.
(
52°10.96 N
,
174°33.53 W
),
116 m
(
NMFS 23-199701
-
103
)
.
Referred material:
RNC 4940
,
96.3 mm
. N of
Amlia Island
,
Andreanof Ids.
(
52°14.89 N
,
173°00.11 W
),
250 m
(
NMFS 176-201601
-
55
)
;
RNC 4911
,
58.6 mm
. S of
Yunaska Island
,
Islands of Four Mountains
(
52°46.9 N
,
170°41.4 W
)
.
Description:
Shell of medium size (to
96 mm
, RNC 4940), fusiform; light brown, solid; periostracum lacking. Whorls rounded; suture impressed. Protoconch extended, 2.5 whorls,
5.1–5.3 mm
in diameter, 4–4.5 teleconch whorls surface usually smooth, axial sculpture lacking, spiral sculpture usually lacking, or rarely with a few, very faint, fine, irregular, spiral cords. Aperture oval, much less than half of shell height; olumella only slightly concave, mature lip thickened, but not flared; canal of moderate length, narrow, nearly straight. Operculum large, but not filling aperture, nucleus terminal.
Radula: Typical for subfamily, rachidian tooth broad, excavated anteriorly, bearing four small cusps, the inner two slightly larger than the outer two. Lateral teeth large, tri-cuspid, cusps well-spaced, outer cusp strongly curved, inner cusp about half as long as outer, only slightly curved; central cusp slightly smaller than inner one, slightly curved.
Remarks:
Differs from
Laevisipho galaxaios
in 1) brownish color, 2) smaller size, 3) less inflated whorls, and 4) occasional few, very faint spiral cords.
Etymology:
The name honors the late Mr. Doyne W. Kessler, Fisheries biologist, NOAA/NMFS,
Alaska
Fisheries Science Center (retired). Mr. Kessler was the first to write a field guide to the fish and invertebrates of the Bering Sea and Gulf of
Alaska
, and was a friend and inspiration to the junior author in the study of Alaskan marine invertebrates.
Distribution:
Central Aleutian Islands, from Atka Island, Andreanof Ids. (
175°16 W
) to near Seguam Island (
172°17 W
), at depths of
99–
220 m
.
Habitat:
Black sand and gravel bottoms, with bottom temperatures of 4.1–4.6°C.