Buccinum bizikovi, Kantor & Sirenko & Zvonareva & Fedosov, 2022

Kantor, Yuri, Sirenko, Boris, Zvonareva, Sofya S. & Fedosov, Alexander, 2022, Taxonomic status of genera of Buccininae (Neogastropoda, Buccinidae) updated based on molecular data with description of new species and corrections of nomenclature of Buccinum, European Journal of Taxonomy 817, pp. 11-34 : 24-28

publication ID

https://doi.org/ 10.5852/ejt.2022.817.1759

publication LSID

lsid:zoobank.org:pub:208E1434-06B5-4071-BEE8-E005E00A415C

DOI

https://doi.org/10.5281/zenodo.6521089

persistent identifier

https://treatment.plazi.org/id/A6137049-7001-4443-AFF1-044DE0E0D832

taxon LSID

lsid:zoobank.org:act:A6137049-7001-4443-AFF1-044DE0E0D832

treatment provided by

Felipe

scientific name

Buccinum bizikovi
status

sp. nov.

Buccinum bizikovi View in CoL sp. nov.

urn:lsid:zoobank.org:act:A6137049-7001-4443-AFF1-044DE0E0D832

Figs 5 View Fig , 6D–F View Fig

Buccinum (Buccinum) bombycinum View in CoL – Golikov 1980: 327, figs 85, 183, 391, 1 pl. XXXI, 1a–1k (part.) (non Dall 1907).

Bathybuccinum (Ovulatibuccinum) ovulum View in CoL – Golikov & Sirenko 1988: 93, figs 13–15 (non Dall, 1895).

Bathybuccinum ovulum View in CoL – Golikov & Sirenko 1998: 122, fig. 12c; Kantor & Sysoev 2006: 160, pl. 74i (non Dall, 1895).

Bathybuccinum bombycinum View in CoL – Kantor & Sysoev 2006: pl. 74d (non Dall 1907).

Bathybuccinum sp. 2 — Sirenko et al. 2013:159.

Diagnosis

Shell reaching 29.5 mm in length, thin, broadly oval, smooth except inconspicuous, irregularly spaced, sometimes oblique spiral cords. Axial sculpture only of thin growth lines. Operculum thin, small, less than 1/ 5 of AL, brown, with terminal nucleus notably shifted to lower outer operculum edge.

Etymology

Named in honour of Vyacheslav Bizikov, Soviet and Russian malacologist, who collected deep-water gastropods, including this species, near the Kurile Islands.

Type material

Holotype KURILE ISLANDS • lv; Iturup I. , 44°20.8′ N, 148°24.0′ E; depth 414 m; Kurile-Sakhalin Expedition, F/T Toporok, stn 101; 14 Sep. 1949; ZIN 62781 . GoogleMaps

Paratypes KURILE ISLANDS • 4 lv; same collection data as for holotype; ZIN 62782 GoogleMaps .

Other material examined

KURILE ISLANDS • 1 lv (SL 19.1 mm); Shikotan I. ; 44°08.1′ N, 147°57.0′ E; depth 285–286 m; Kurile-Sakhalin Expedition, F/T Toporok, stn 93; 13 Sep. 1949; ZIN 62788 GoogleMaps 1 lv (SL 16.9 mm); Iturup I. ; 44°58.2′ N, 149°19.0′ E; depth 605–620 m; R/V Odyssey; 25 Jul. 1984; ZIN 48103 GoogleMaps 1 lv (SL 18.0 mm); Simushir I. ; depth 450–480 m; R/V Odyssey; 30 Dec. 1984; ZIN 62787 1 lv (SL 29.5 mm); Polonskogo I. ; 43°19′ N, 146°37′ E; depth 500 m; R/V Tikhookeanskiy, stn 10, sample 26; 9 Jul. 1987; ZIN 62785 GoogleMaps 1 lv (SL 14.0 mm); Shikotan I. ; 43°37′ N, 147°19′ E; depth 400 m; R/V Tikhookeanskiy; 11 Jul. 1987; ZIN 62783 GoogleMaps 1 lv (SL 18.0 mm); Iturup I. ; 44°49.5′ N, 149°01.7′ E; depth 650 m; R/V Tikhookeanskiy; 13.08.1987; ZIN 62786 GoogleMaps .

SEA OF OKHOTSK • 3 lv (SL 15.0– 23.1 mm); South-eastern Sakhalin, 47°50.4′ N, 142°53.5′ E; depth 78 m; Kurile-Sakhalin Expedition; F/T Toporok; stn 145; 30 Sep.–1 Oct. 1949; ZIN 62783 GoogleMaps .

Description

MEASUREMENTS (holotype). SL 20.0 mm, AL 13.6 mm, SW 13.1 mm. Largest available specimen attains 29.5 mm.

SHELL. Thin, fragile, oval, smooth, with short siphonal canal, pale-brownish to rose- brownish. Protoconch of about 1.5 low, convex whorls, strongly eroded. Teleoconch whorls 3+, suture distinct, adpressed at periphery of previous whorl. SW/SL ratio 0.62–0.67 (0.65 in holotype), LW/SL ratio 0.80–0.81 (0.80 in holotype). Axial sculpture of thin, weakly prosocline growth lines. Spiral sculpture of low, indistinct irregularly spaced, sometimes oblique cords.Aperture large, semi-oval. Outer lip thin, slightly adpressed adapically. Columella straight, smooth. Siphonal notch wide and rather shallow. AL/SL ratio 0.64–0.70 (0.68 in holotype). Periostracum thin, smooth, yellowish brown. Operculum ( Fig. 6E View Fig ) small, spanning less than 0.25 of AL, thin, brownish, translucent, oval, with nucleus shifted to lower edge,.

RADULA (n = 1). Rachidian tooth with broad rectangular basal plate and five short cusps nearly equal in length. Lateral tooth with three cusps, outer cusp longest, intermediate shortest and most narrow ( Fig. 6D View Fig ).

PENIS (n = 1). Distal end of the penis with cone-shaped papilla, surrounded by circular fold ( Fig. 6F View Fig ).

Remarks

Specimens of this new species were previously identified as Buccinum bombycinum ( Golikov 1980) or Bathybuccinum ovulum ( Golikov & Sirenko 1988, 1998). Kantor & Sysoev (2006) suggested that the specimens, identified by Golikov & Sirenko are not conspecific with B. ovulum .

The new species differs from B. ovulum ( Fig. 5G View Fig ) in having a higher spire (LW/SL ratio is 0.92 in B. ovulum vs 0.80–0.81 in B. bizikovi ) and a smaller operculum (less than 0.25 of AL in B. bizikovi and typically around 0.4 in B. ovulum ) with nucleus situated much closer to the edge. The new species differs from B. hasegawai in having a broader shell (SW/SL ratio 0.48–0.58 in B. hasegawai and 0.62–0.67 in B. bizikovi ) and a lower aperture (AL/SL ratio 0.51–0.63 in B. hasegawai and 0.64–0.70 in B. bizikovi ). Buccinum ovulum sensu Golikov & Sirenko 1988 (non Dall 1907) was designated as the type species of Bathybuccinum (Ovulatibuccinum) . Therefore, it is a case of misidentified type species and it is now fixed (under Article 70.3 of the Code) as Buccinum bizikovi sp. nov. misidentified as Buccinum ovulum Dall, 1907 in the original designation by Golikov & Sirenko (1988).

Distribution

Kurile Islands: Simushir, Iturup, Shikotan and Polonskogo Islands, depth 285–650 m; Okhotsk Sea, south-eastern Sakhalin, depth 78 m.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

SubClass

Caenogastropoda

Order

Neogastropoda

SuperFamily

Buccinoidea

Family

Buccinidae

SubFamily

Buccininae

Genus

Buccinum

Loc

Buccinum bizikovi

Kantor, Yuri, Sirenko, Boris, Zvonareva, Sofya S. & Fedosov, Alexander 2022
2022
Loc

Bathybuccinum sp. 2

Sirenko B. I. 2013: 159
2013
Loc

Bathybuccinum ovulum

Kantor Y. & Sysoev A. V. 2006: 160
Golikov A. N. & Sirenko B. I. 1998: 122
1998
Loc

Bathybuccinum (Ovulatibuccinum) ovulum

Golikov A. N. & Sirenko B. I. 1988: 93
1988
Loc

Buccinum (Buccinum) bombycinum

Golikov A. N. 1980: 327
1980
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