Afrodonta pentodon, Herbert, 2020
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.3804736 |
persistent identifier |
https://treatment.plazi.org/id/ED136FF6-F319-4C79-9EBA-B225283F7F6D |
taxon LSID |
lsid:zoobank.org:act:ED136FF6-F319-4C79-9EBA-B225283F7F6D |
treatment provided by |
Valdenar |
scientific name |
Afrodonta pentodon |
status |
sp. nov. |
Afrodonta pentodon sp. nov.
urn:lsid:zoobank.org:act:ED136FF6-F319-4C79-9EBA-B225283F7F6D
Figs 6 View Fig , 7 View Fig A–D, 17Q–R
Diagnosis
Shell very small, spire distinctly raised; protoconch microscopically shagreened; teleoconch texture silky; sculpture of simple, close-set, microscopic axial riblets; aperture with two well-developed, inrunning parietal lamellae, lower one extending just beyond edge of aperture, upper one recessed a short distance, and a rounded baso-columellar denticle; palatal region with a low, broad, in-running, thickened pad situated well below mid-whorl, plus a small, narrow, deep-set, subsutural denticle; umbilicus narrow to moderate. Shell corneous-brown when fresh; diameter up to 1.5 mm.
Etymology
From the Greek pente (πέντε): five, and odontos (ΟΔΟντΟς): a tooth; with reference to the five apertural teeth.
Material examined
Holotype
SOUTH AFRICA • KwaZulu-Natal, Ngele Forest ; 30.533° S, 29.633° E; 1350 m a.s.l.; 3 Mar. 1997; D.G. Herbert leg.; mistbelt Podocarpus forest, sorted from dried leaf-litter sample; diameter 1.45 mm, height 0.84 mm; NMSA V6950/T4239 . GoogleMaps
Paratypes
SOUTH AFRICA • 4 specimens; KwaZulu-Natal, Ngele Forest ; 30.5309° S, 29.6846° E; 1290 m a.s.l.; 3 Mar. 1997; D.G. Herbert leg.; mistbelt Podocarpus forest, in leaf-litter and under logs; NMSA V8275/ T4240 GoogleMaps .
Other material
SOUTH AFRICA – KwaZulu-Natal • 1 specimen; Ngele Forest ; 30.53° S, 29.63° E; 1350 m a.s.l.; 17 Feb. 1997; D. Barraclough leg.; mistbelt Podocarpus forest, sorted from leaf-litter; NMSA V4864 About NMSA GoogleMaps • 1 specimen; same collection data as for preceding; 27 Mar. 1998; C. Symes leg.; NMSA V6887 About NMSA GoogleMaps .
Description
Shell very small, diameter up to 1.5 mm, H/D ratio ±0.58; spire distinctly raised; suture indented and apical portion of whorls strongly convex, whorls thus weakly shouldered; periphery more or less at mid-whorl; whorls slightly flat-sided; last adult whorl descendant. Protoconch comprising apical cap plus approx. 0.75 whorl; diameter ±310 μm; microscopically shagreened. Teleoconch of up to 3.25 whorls; surface texture silky; sculpture of simple, close-set, microscopic axial riblets; riblets alternating in strength and with even finer spiral threads in their intervals (sometimes scarcely evident). Umbilicus narrow to moderate.Aperture obliquely lunate, broader basally; parietal region with two well-developed, in-running lamellae, lower one extending just beyond edge of aperture, upper one recessed a short distance and with a flat-topped crest internally; baso-columellar region with a rounded denticle; palatal region with a low, broad, in-running, thickened pad situated well below mid-whorl, plus a small, narrow, deep-set, subsutural denticle. Shell corneous-brown when fresh.
Distribution and conservation
A narrow-range endemic ( Fig. 6 View Fig ), known only from Ngele Forest, near Kokstad, KwaZulu-Natal, at 1290–1350 m a.s.l.; living in leaf-litter of southern mistbelt forest. Although this forest is theoretically protected, access is completely uncontrolled and it is surrounded by exotic timber plantation heavily invaded by alien plants.
Remarks
A distinctive species with characteristic dentition, including a thickened palatal pad.
NMSA |
KwaZulu-Natal Museum |
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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