Beringius aurulentus 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
- Beringius
- species
- Beringius aurulentus
description
Description: Shell moderately large (to 117 mm, Holotype), slender, nearly fusiform, suture impressed; white to pale tan; periostracum golden-tan. Protoconch with 2.5 whorls, with spiral and oblique cords forming diamond-like lattice; teleconch with 4.5 – 5 whorls. Axial ribs faint or lacking, but bearing very numerous, fine, close-set, raised axial threads. Spiral sculpture (when present), consists of a few barely detectable cords (on old, thick specimens, i. e., paratype three). Aperture short, much less than half of shell height, canal short, broad. Radula (Fig. 12 D): Rachidian tooth broader than long, lateral edges rounded, anterior and posterior edges slightly indented. Lateral teeth large, tricuspid; outer cusp thick, tapering, strongly curved, or distal half, and often bearing a small protrusion near the base on the inside, forming a notch between it and the central cusp; central cusp many times smaller than outer one, and slightly curved outward; inner denticle about twice as large as central one, broad, strongly curved inward.
description
Figure 12 A – D urn: lsid: zoobank. org: act: 52353 F 2 F- 07 C 7 - 43 FB- 9344 - 14 A 0 E 1718 D 58
discussion
Remarks: This species resembles Beringius incisus (Dall, 1907) (figs. 9 D – G) [herein recognized as distinct from the variable Beringius kennicottii (Dall, 1871) (figs. 8 A – G) on account of its fine, regular, spiral threads], but is distinguished by 1) the lamellar periostracum, and 2) the fine axial threads on the whorls as opposed to spiral threads only in Beringius incisus.
distribution
Distribution: Central Aleutian Islands, from Kagamil Pass, Islands of Four Mountains (169 ° 50 ’ W) to Tahoma Reef, W of Buldir Island (175 ° 40 ’ E), at depths of 147 – 321 m. Habitat: Broken hydrocoral / sponge, and gravel bottoms, with a bottom temperature of 4 – 4.4 ° C.
etymology
Etymology: Latin, aurulentus, “ golden, or made of gold ”, in reference to the color of the periostracum.
materials_examined
Type locality: Tahoma Bank, W of Buldir Island, Aleutian Is., Alaska (52 ° 26.12 N, 175 ° 40.99 E), 147 m. (NMFS 94 - 200201 - 167). Type material: Holotype, LACM 3577, 117 mm. (leg. RNC, 9 July, 2002, trawled, R / V Vesteraalen); Paratypes: Pt 1, SBMNH 464996, 92.4 mm; Pt 2, USNM 1606661, 105.4 mm. W of Uliaga Island, Islands of Four Mountains (53 ° 07.07 N, 169 ° 52.12 W), 321 m. (NMFS 57 - 200201 - 38); Pt 3, CASIZ 236198, 99.5 mm. SE of Yunaska Island, Islands of Four Mountains (52 ° 44.8 N, 170 ° 39.3 W), 87 m (NMFS 143 - 201001 - 78); Pt 4, RNC 4701, 88.6 mm. (type locality).