Laevisipho kessleri Mclean & Clark 2023
- Dataset
- Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska
- Rank
- SPECIES
- Published in
- Mclean, James H., Clark, Roger N. (2023): Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska. Zootaxa 5351 (2): 151-201, DOI: 10.11646/zootaxa.5351.2.1, URL: http://dx.doi.org/10.11646/zootaxa.5351.2.1
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Gastropoda
- order
- Neogastropoda
- family
- Buccinidae
- genus
- Laevisipho
- species
- Laevisipho kessleri
description
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.
discussion
Remarks: Differs from Laevisipho galaxaios in 1) brownish color, 2) smaller size, 3) less inflated whorls, and 4) occasional few, very faint spiral cords.
distribution
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.
etymology
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.
materials_examined
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).