Beringius maristempestus, Mclean & Clark, 2023
publication ID |
https://doi.org/ 10.11646/zootaxa.5351.2.1 |
publication LSID |
lsid:zoobank.org:pub:F34F6B3C-F251-4D8E-B002-A96BD70CA1BE |
DOI |
https://doi.org/10.5281/zenodo.8399606 |
persistent identifier |
https://treatment.plazi.org/id/03B1CA1B-FFD4-7C0F-FF18-CD2FFBC4490E |
treatment provided by |
Plazi |
scientific name |
Beringius maristempestus |
status |
sp. nov. |
Beringius maristempestus View in CoL n. sp.
Figure 12 E–G View FIGURE 12 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 ) GoogleMaps .
Type material. Holotype LACM 3576 About LACM . (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. GoogleMaps ( 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 View FIGURE 11 ): 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 undalations, 3) lacking the regular bifurcated spiral ribs separated by interspaces of the same width and 4) possessing a lattice-like net-work of raised growth lines, and broad flattened spiral cords with raised edges.
Etymology: Named for the F/V Sea Storm, which collected the holotype.
Distribution: Known so far only from the vicinity of Cape Wrangell, Attu Island, at the western end on the Aleutians (172°23– 172º20 E), at depths of 220– 240 m.
Habitat: Volcanic sand, gravel and rocks, with a bottom temperature of 4.1°C.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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