Taguahelix francesci
| Taguahelix francesci | |
|---|---|
| |
| Drawing of a shell of Taguahelix francesci (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Punctidae |
| Genus: | Taguahelix |
| Species: | T. francesci
|
| Binomial name | |
| Taguahelix francesci (W. H. Webster, 1904)
| |
| Synonyms[1] | |
|
Laoma (Phrixgnathus) francesci W. H. Webster, 1904 superseded combination) | |
Taguahelix francesci is a species of terrestrial snail in the family Punctidae.[1]
Description
[edit]The length of the shell attains 2 mm, its diameter 1.75 mm.
(Original description) The turbinate shell is dark brown and dull. The shell contains 4½ rounded whorls. The protoconch consists of 1½ concentrically striate whorls. The remaining whorls, besides concentric wavy striae, show 4—5 radiate, brown, white-edged, periostracal processes per millim., directed backward, with many hairlike growth-lines between. The suture is deep. The periphery is rounded. The umbilicus is narrow and pervious. The outer lip is simple, the margins slightly converging. The columella is vertical, reflexed above and slightly covers the umbilicus. The base of the shell is rounded.[2]
Distribution
[edit]This species is endemic to New Zealand and occurs on North Island
References
[edit]- ^ a b MolluscaBase eds. (2023). MolluscaBase. Taguahelix francesci (W. H. Webster, 1904). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=821419 on 2023-11-14
- ^ Webster, W.H. (1904). New Mollusca from New Zealand. Proceedings of the Malacological Society of London 6: 106-108
- Climo, F. M.; Goulstone, J. F. (1993). "Descriptions and Redescriptions of Landsnails (Mollusca: Punctidae) in the Genera Phrixgnathus and Taguahelix". Records of the Auckland Institute and Museum. 30: 27–45. ISSN 0067-0464. JSTOR 42906432. Wikidata Q58677441.
- Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (
- Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. pp 196–219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch