Homalopoma tosaense Habe, 1953

Helwerda, Renate Ariane, Wesselingh, Frank Pieter & Williams, Suzanne T., 2014, On some Vetigastropoda (Mollusca, Gastropoda) from the Plio-Pleistocene of the Philippines with descriptions of three new species, Zootaxa 3755 (2), pp. 101-135 : 106

publication ID

https://doi.org/ 10.11646/zootaxa.3755.2.1

publication LSID

lsid:zoobank.org:pub:1872ECAB-3C5C-4D76-93A0-A8626F75B96E

DOI

https://doi.org/10.5281/zenodo.5671247

persistent identifier

https://treatment.plazi.org/id/490087B3-FFB8-6D25-FF1F-FBA65F62F8DE

treatment provided by

Plazi

scientific name

Homalopoma tosaense Habe, 1953
status

 

Homalopoma tosaense Habe, 1953 View in CoL

( Figures 3–5 View FIGURES 3 – 5 )

1982 Homalopoma druidi nov. spec.—Ladd: p. 27–28, pl. 36, figs 5–8.

1999 Homalopoma tosaensis ( Habe, 1953) —Higo et al.: p. 46.

2001 Leptothyra tosaensis ( Habe, 1953) View in CoL —Higo et al.: p. 17, fig. G198.

2013 Leptothyra tosaensis ( Habe, 1953) View in CoL —Poppe & Poppe:

http://www.conchology.be/?t=27&family= COLLONIIDAE View in CoL &species= Leptothyra View in CoL %20 tosaensis 2013 View in CoL Homalopoma tosaense Habe, 1953 View in CoL —Rosenberg: http://marinespecies.org/aphia.php?p=taxdetails&id=737892

Material. Anda 2 (1); Anda 6 (1); AndaDeVos (4).

Characterization. Shell turbiniform, robust, H 3.6 mm, W 3.8 mm; P1 smooth, 1.0 whorls, DN 0.15–0.17 mm; P2, 0.3 whorls, with two robust spiral ribs on median-upper part and third basal spiral rib; P/T boundary distinct terminal varix at 1.3 whorls; T sculpture of spiral ribs; additional spiral ribs between uppermost spiral and suture; spiral and axial lirae in interspaces; umbilicus narrow.

Distribution. Apart from the studied material, this species is known from Tosa Bay and southern Kyushu ( Japan), East China Sea ( Higo et al. 1999), as well as Pliocene deposits of Viti Levu, Fiji ( Ladd 1982).

Remarks. Homalopoma druidi ( Ladd, 1982) is synonymized here with Homalopoma tosaense Habe, 1953 and Leptothyra tosaensis ( Habe, 1953) , because of its overall similar conchology. Although the holotype of Homalopoma druidi ( Ladd, 1982) has a rather high spire when compared to the holotype of Leptothyra tosaensis ( Habe, 1953) , its spire height falls well within the range of intraspecific variation observed on the website: http:// www.conchology.be/?t=27&family= COLLONIIDAE &species= Leptothyra %20 tosaensis . It remains unclear whether the species should be assigned to Leptothyra or Homalopoma , as these genera are not well delimited.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Trochida

Family

Colloniidae

Genus

Homalopoma

Loc

Homalopoma tosaense Habe, 1953

Helwerda, Renate Ariane, Wesselingh, Frank Pieter & Williams, Suzanne T. 2014
2014
Loc

Homalopoma tosaensis (

Habe 1953
1953
Loc

Leptothyra tosaensis (

Habe 1953
1953
Loc

Leptothyra tosaensis (

Habe 1953
1953
Loc

Homalopoma tosaense

Habe 1953
1953
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