Neptunea jewetti 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
- Neptunea
- species
- Neptunea jewetti
description
Description: Shell of moderate size (50 mm), pyriform, rather broad, whorls somewhat flattened above suture; suture weakly impressed; periostracum absent. protoconch small, about 1.4 mm in diameter, smooth, 1.5 whorls (partially obscured by a bryozoan in the holotype), 3.5 teleconch whorls. Axial and spiral sculpture lacking except for faint incremental growth lines; color uniformly dark brown. Aperture slightly more than half of shell height; Aperture large, oval; canal short, broad. Operculum notably smaller than aperture, nucleus terminal. Radula: Rachidian tooth broadly rectangular, bearing five short, sharply pointed cusps, grading slightly from the outer to the central one. Lateral teeth tricuspid, outer cusp long, relatively thick, curved, central cusp considerably shorter, set close to inner cusp, inner cusp about as thick, but only ¾ as long as outer cusp, and only slightly curved at tip.
description
Figures 17 F – G urn: lsid: zoobank. org: act: D 8 DE 791 E-FE 05 - 4 AE 9 - 9 A 87 - F 503 B 07 F 7 E 65
discussion
Remarks: Bears some resemblance Neptunea ventricosa (Gmelin, 1790), but is smaller, and has less inflated whorls, and shorter, broader canal. This species also bears some superficial resemblance to Volutopsius castaneus (Mörch, 1858), but is immediately distinguished by the proportions of the shell.
distribution
Distribution: known so far only from the holotype, taken at 18 m, at Yunaska Island, Islands of Four Mountains. Habitat: Holotype found on gravel in area of moderate to strong surge. Bottom temperature 4.4 ° C.
etymology
Etymology: The name honors biologist Dr. Stephen C. Jewett, University of Alaska, Fairbanks (retired), The AKMAP Survey co-leader, who collected the holotype.
materials_examined
Type locality: SE side of Yunaska Island, Islands of Four Mountains (52 ° 35.6 N, 170 ° 38.24 W), 18 m. (AKMAP 2006 station: AKALE 06 - 0037) (leg. Stephen C. Jewett, 17 July, 2006). Type material: LACM 3587 (49.7 mm).
Name
- Homonyms
- Neptunea jewetti Mclean & Clark 2023