Amalda hayashii Ninomiya, 1988
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 |
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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.
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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Amalda hayashii Ninomiya, 1988
Kantor, Yuri I., Castelin, Magalie, Fedosov, Alexander & Bouchet, Philippe 2020 |
Amalda hayashii
Okutani T. 2000: 523 |
Tsuchida 2017 : atlas: 332, pl. 288 fig. 2, text: 995. |
Amalda (Alcospira) hayashii
Ninomiya T. 1988: 145 |