Amalda hayashii Ninomiya, 1988

Kantor, Yuri I., Castelin, Magalie, Fedosov, Alexander & Bouchet, Philippe, 2020, The Indo-Pacific Amalda (Neogastropoda, Olivoidea, Ancillariidae) revisited with molecular data, with special emphasis on New Caledonia, European Journal of Taxonomy 706, pp. 1-59 : 50-51

publication ID

https://doi.org/ 10.5852/ejt.2020.706

publication LSID

lsid:zoobank.org:pub:C4C4D130-1EA7-48AA-A664-391DBC59C484

DOI

https://doi.org/10.5281/zenodo.4333176

persistent identifier

https://treatment.plazi.org/id/03A7D504-FFCB-FFFF-642A-F8C7A790FA88

treatment provided by

Valdenar

scientific name

Amalda hayashii Ninomiya, 1988
status

 

Amalda hayashii Ninomiya, 1988

Figs 19 View Fig J–K, 20F–I

Amalda (Alcospira) hayashii Ninomiya, 1988: 145 , pl. l figs 7–8.

Amalda hayashii – Okutani 2000: 523, pl. 260, fig. 3 (erroneously labelled as A. hilgendorfi ). — Tsuchida 2017: atlas: 332, pl. 288 fig. 2, text: 995.

Type material

Holotype

SOUTHERN JAPAN • Amami-Oshima Island ; Ninomiya collection [not seen].

Material examined

9 sequenced specimens ( Table 1).

Description

MEASUREMENTS. Shell medium in size (SL up to 50 mm).

SHELL. Ovate-fusiform, with medium high, weakly cyrtoconoid spire. Primary spire callus thick, strongly pustulose except smooth last whorl, covering all whorls, except tip of protoconch, rendering measurements impossible. Secondary callus rather thin, with indistinct borders, microshagreened, weakly glossy, fusing with parietal callus without visible border, and reaching antepenultimate whorl and merging into primary callus. Plication plate from nearly smooth to bearing up to 5 ridges, columella smooth or with traces of plicae. Olivoid groove shallow to very shallow, labral denticle short, obtuse, rounded. Anterior band microshagreened, upper anterior band weakly convex with median or shifted more abapically, obtuse ridge, lower anterior band flat. Primary callus yellow-brownish on spire and slightly darker abapically, also bordered by almost white, medium broad, band. Secondary callus whitish, translucent. Body whorl cloak light chestnut with slight purple tint, olivoid band whitish, anterior brown, lower anterior band lighter, plication plate creamy.

RADULA (n=3, sequenced, Fig. 20 View Fig F–I). With simple, hook-shaped lateral teeth. Central teeth quite variable, from tridentate with large, smooth cusps, central smallest ( Fig. 20I View Fig ), with serrated cusps and lateral flaps ( Fig. 20G View Fig ), to multicuspid central with five smooth cusps, central three much smaller than lateral ones.

Distribution

From southern Japan to the South China Sea, in 250– 310 m.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

SubClass

Caenogastropoda

Order

Neogastropoda

Family

Olividae

Genus

Amalda

Loc

Amalda hayashii Ninomiya, 1988

Kantor, Yuri I., Castelin, Magalie, Fedosov, Alexander & Bouchet, Philippe 2020
2020
Loc

Amalda hayashii

Okutani T. 2000: 523
2000
Loc

Amalda (Alcospira) hayashii

Ninomiya T. 1988: 145
1988
Loc

A. hilgendorfi

Tsuchida 2017 : atlas: 332, pl. 288 fig. 2, text: 995.
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