Beringius maristempestus Mclean & Clark 2023, n. sp.

• Main Authors: Mclean, James H., Clark, Roger N.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Buccinidae; Beringius; Beringius maristempestus; Attu; Alaska
• Online Access: https://zenodo.org/record/8399606; https://doi.org/10.5281/zenodo.8399606

Beringius maristempestus n. sp. Figure 12 E–G urn:lsid:zoobank.org:act: 20A49029-512D-47D4-B5E0-3A2290FA5C17 Type locality: W of Cape Wrangell, Attu Island, Near Ids., Aleutian Is., Alaska (52°50.68 N, 172°23.74 E). 221 m (NMFS 143-200601 - 118). Type material. Holotype LACM 3576. (leg. 7 July, 2006, trawled, R/ V Sea Storm). Referred Material: RNC 4156, 111 mm; SW of Cape Wrangel, Attu Island, Near Ids. (52º50.91 N, 172º20.3 E), 240 m. (NMFS 143-200201 - 39). Description: Shell, moderately large (to 111 mm, RNC 4156) elongated-pyriform; whorls rounded, suture moderately impressed; white to pinkish, with thin, periostracum yellow-tan. Nucleus eroded, teleconch with 4–5 whorls. Axial sculpture of 13 broad, faint undulations on the upper half of the whorls, obsolete on lower half of body whorl, interspaces somewhat narrower than folds. Axial micro-sculpture of fine, raised, close-set growth lines. Spiral sculpture of numerous low, broad, flat-topped cords, with raised edges (often topped with one to four very fine threads) giving a fine lattice-like appearance where they cross the axial ridges; interspaces one to three times as wide as cords. Aperture less than half of shell height, outer lip slightly thickened, canal short, rather narrow. Radula (Fig. 11 G): Rachidian tooth about one and one half as wide as long, lateral edges rounded, posterior edge slightly excavated. Lateral teeth large, tricuspid, outer cusp strongly curved, tapering, constricted near base; central and inner cusps conjoined for half their length, central cusp small, slender; inner cusp about three times as large as central cusp, curved, tapering, somewhat more than ¼ the length of the outer cusp. Remarks: This species resembles Beringius stanchfieldi n. sp., but differs in the presence of axial undulations on the upper portion of the whorls, as well as the fine, raised axial micro-sculpture. It also resembles “ Neoberingius ” freilei Dall, 1895, but differs in 1) the pyriform as opposed to fusiform profile, 2) the presence of axial ...