Laevisipho galaxaios 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 galaxaios
description
Description: Shell large (to 122 mm, holotype), fusiform; pillar straight, whorls rounded, suture impressed; uniformly whites; spiral and axial sculpture absent. Protoconch large, extended, with 2 whorls, diameter 5.4 – 5.6 mm. Teleconch with 4 – 5 whorls, first teleconch whorl extended. Mature lip thickened, but not flared, canal of moderately long, narrow. Radula: Typical for this subfamily, Rachidian tooth broad, excavated anteriorly, bearing three small, equal-sized cusps; Lateral teeth large, tri-cuspid, cusps well-spaced, outer cusp much larger than inner two, strongly curved; central and inner cusps sub-equal, inner cusp very slightly shorter and more strongly curved than inner one.
discussion
Remarks: This species differs from L. kessleri in 1) larger size, 2) more inflated whorls, 3) uniformly white coloration, and 3) lack of any spiral sculpture.
distribution
Distribution: Central Aleutian Islands, from Amutka Pass (171 ° 48 W) to the Islands of Four Mountains (169 ° 53 W), at depths of 324 – 406 m. Habitat: Sand and gravel bottoms, with bottom temperatures of 3.9 – 4.2 ° C.
etymology
Etymology: The name is derived from the Greek word for “ milky white ” rather than a latin root, reflects the solid white color of the shell.
materials_examined
Type locality: Amutka Pass, Aleutian Islands, Alaska (52 ° 14.9 N, 171 ° 41.88 W); 406 m. (NMFS 94 - 200001 - 79). Type material: Holotype CASIZ 141123, 122.4 mm. (leg. E. Kools, 11 June, 2000, trawled, R / V Vesteraalen); Paratypes: Pt 1, CASIZ 141125, 110.1 mm. Amutka Pass (52 ° 06 N, 171 ° 8 W), 324 m (NMFS 94 - 200001 - 78); Pt 2, LACM 3634, 110 mm. Samalga Pass, (52 ° 56.39 N, 169 ° 19.58 W), 401 m (NMFS 57 - 200201 - 25); Pt 3, RNC 4627, 115.8 mm. Samalga Pass, (52 ° 53.78 N, 169 ° 27.8 W), 337 m (NMFS 143 - 200401 - 28).