Afrodonta unilamellaris Connolly, 1933

Herbert, David G., 2020, Revision of the aperturally dentate Charopidae (Gastropoda: Stylommatophora) of southern Africa - genus Afrodonta s. lat., with description of five new genera, twelve new species and one new subspecies, European Journal of Taxonomy 629, pp. 1-55 : 19-20

publication ID

https://doi.org/10.5852/ejt.2020.629

publication LSID

lsid:zoobank.org:pub:ECEBD539-6E3E-45BE-A0CB-264DF3270CC0

DOI

https://doi.org/10.5281/zenodo.3804740

persistent identifier

https://treatment.plazi.org/id/03C78785-461E-FFD1-422B-4067344FF9D2

treatment provided by

Valdenar

scientific name

Afrodonta unilamellaris Connolly, 1933
status

 

Afrodonta unilamellaris Connolly, 1933

Figs 6 View Fig , 7 View Fig E–G, 18A–B

Afrodonta unilamellaris Connolly, 1933: 146 , text-fig. 1(6), pl. 7, figs 2–4. Afrodonta unilamellaris – Connolly 1939: 250, text-fig. 19(6). — Solem 1970: 360. — Herbert & Kilburn 2004: 248, text-fig.

Diagnosis

Shell small, spire weakly raised, whorls somewhat flat-sided; protoconch smooth, at most microscopically shagreened (diameter ±375 μm); teleoconch texture silky; sculpture comprising simple, very fine and close-set axial riblets of alternating strength; spiral sculpture of fine indistinct threads in riblet intervals; parietal region with a single rounded in-running ridge-like lamella (occasionally the crest divided by a groove); baso-columellar and palatal regions lacking dentition; umbilicus relatively narrow. Shell buff to pale ochre when fresh; diameter up to 1.6 mm.

Material examined

Holotype

SOUTH AFRICA • KwaZulu-Natal, Mfongosi; W.E. Jones leg.; NHMUK 1931.6.4.3.

Paratypes

SOUTH AFRICA • 6 specimens; same collection data as for holotype; NHMUK 1937.12.30.2795 to 2800 .

Other material

SOUTH AFRICA – KwaZulu-Natal • 5 specimens; KwaZulu-Natal, Mfongosi; 28.713° S, 30.805° E; W.E. Jones leg.; NMSA A9186 View Materials GoogleMaps 1 specimen; same collection data as for preceding; NMSA A9194 View Materials GoogleMaps 16 specimens; same collection data as for preceding; NMSA A9195 View Materials GoogleMaps .

Distribution and conservation

A narrow-range endemic ( Fig. 6 View Fig ), known only from the Mfongosi area (± 500 m a.s.l.) in the Thukela River valley below Kranskop, KwaZulu-Natal; no accurate habitat data available. This area is not afforded any formal protection and is threatened by impacts related to subsistence agriculture.

Remarks

Unlikely to be confused with any other species. The original samples collected by W.E. [‘Mamba’] Jones remain the only ones known. The Mfongosi area contains a number of small, isolated limestone bodies belonging to the Ntingwe Group ( Martini 1987) from which other narrow-range endemic land snails are known, e.g., Anisoloma falconiana (Pilsbry, 1929) and Gulella leucocion Connolly, 1929 . Herbert & Kilburn (2004: 53) discussed the interesting history of this locality and the original collector.

NMSA

South Africa, Kwa-Zulu Natal, Pietermaritzburg, Natal Museum

NMSA

KwaZulu-Natal Museum

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Endodontidae

Genus

Afrodonta

Loc

Afrodonta unilamellaris Connolly, 1933

Herbert, David G. 2020
2020
Loc

Afrodonta unilamellaris

Herbert D. & Kilburn D. 2004: 248
Solem A. 1970: 360
Connolly M. 1939: 250
Connolly M. 1933: 146
1933