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 Herbert, David G. European Journal of Taxonomy 2020 2020-04-17 629 1 55 7PZ8J Herbert, 2020 Herbert 2020 [557,848,615,642] Gastropoda Charopidae Amatholedonta Animalia Stylommatophora 23 24 Mollusca species fordycei gen. et sp. nov.   Figs 8E–H, 9, 18E–F    Diagnosis Shell relatively large, biconcave with deep, tightly coiled whorls; spire distinctly sunken; protoconch smooth, globose; teleoconch sculptured by fine, close-set axial riblets, spiral sculpture virtually obsolete; aperture narrow, crescent-shaped, lacking parietal and columellar dentition; palatal region with 1–2 axially aligned rows of denticles set back 1⁄ 6and 1⁄ 3whorl behind outer lip, visible only by transparency; each row with three denticles, situated at, below, and above periphery; umbilicus of moderate width and deep, V-shaped. Shell translucent, straw-brown; diameter up to 2.0 mm.    Etymology Named after the typelocality, Fort Fordyce, E. Cape.    Material examined   Holotype   SOUTH AFRICA• E. Cape, Fort Beaufort area, Fort Fordyce Nature Reserve; 32.69556° S, 26.48556° E;  1120 ma.s.l.;  30 Dec. 2008; M. and K. Coleleg.; south facing indigenous forest, under logs; diameter 1.84 mm, height 1.10 mm; NMSA W6668/T4270.   Paratypes   SOUTH AFRICA–  E. Cape• 2 specimens; same collection data as for holotype; NMSA P1020/T4271•  8 specimens; NW of Fort Beaufort, Fort Fordyce Nature Reserve; 32.667° S, 26.483° E; ±  1100 ma.s.l.;  8 Jul. 2001; C. Symesleg.; in forest leaf-litter; NMSA V9343/T4266•  11 specimens; Fort Fordyce Nature Reserve, kloof with sheer krantz; 32.68808° S, 26.51304° E;  6 Oct. 2009; M. Coleleg.; ELM D16076/T168•  20 specimens; Fort Fordyce Nature Reserve, near Harris Hut; 32.68342° S, 26.47670°E;  5 Oct. 2009; M. Coleleg.; ELM D16087/T169.    Description Shell relatively large, diameter up to 2.0 mm, H/D ratio ±0.55, biconcave with deep, tightly coiled whorls; spire distinctly sunken; last adult whorl not descendant; suture strongly indented, and apical and basal portions of whorls strongly convex, peripheral portion evenly rounded. Protoconch comprising globose apical cap plus approx. 1.0 whorl; diameter ±325 μm; smooth. Teleoconch of up to 3.75 whorls; sculptured by fine, close-set axial riblets, with intervals 1.0–1.5 times their width at whorl periphery; spiral sculpture virtually obsolete. Umbilicus of moderate width and deep, V-shaped. Aperture narrow, crescent-shaped, but apical and basal limits rounded; parietal and columellar dentition lacking; palatal region with 1–2 axially aligned rows of denticles set back 1⁄ 6and ⅓ whorl behind outer lip, not visible through aperture and apparent only through translucent shell; each row with three denticles, situated at, below and above periphery, the upper two rounded (uppermost sometimes axially elongate), the lower one an elongate, in-running ridge. Shell translucent, straw-brown.    Distribution and conservation A narrow-range endemic ( Fig. 9), known only from the Fort Fordyce Nature Reserve, near Fort Beaufort, E. Cape, at approx. 1100 ma.s.l.; in leaf-litter of southern mistbelt forest. Fort Fordyce Nature Reserve is a formally protected area managed by Eastern CapeParks and Tourism Agency.    Remarks   Amatholedonta fordycei gen. et sp. nov.resembles  Am. bimunita gen. et comb. nov.from the neighbouring Hogsback region. It differs from that species in having much finer axial sculpture and a somewhat less deeply sunken spire. In addition, the palatal dentition contains only three denticles per row (instead of 5–6), of which the most basal one is markedly more elongate. 2605305620 south facing indigenous forest, under logs 2008-12-30 NMSA M. and K. Cole South Africa 1120 -32.69556 Fort Fordyce Nature Reserve 1 26.48556 Fort Beaufort area 23 24 W6668/T4270 1 Cape holotype 2605305664 [189,1398,1419,1446] 2008-12-30 NMSA M. and K. Cole South Africa 1120 -32.69556 E. Cape 1 26.48556 Fort Beaufort area 23 24 P1020/T4271 2 E. Cape paratype 2605305612 in forest leaf-litter 2001-07-08 NMSA C. Symes South Africa 1100 -32.667 Fort Fordyce Nature Reserve 72 26.483 NW of Fort Beaufort 23 24 V9343/T4266 8 Western Cape paratype 2605305684 2009-10-06 ELM M. Cole South Africa -32.68808 Fort Fordyce Nature Reserve 1 26.51304 23 24 D16076/T168 11 Western Cape paratype 2605305737 2009-10-05 ELM M. Cole South Africa -32.68342 near Harris Hut 1 26.4767 Fort Fordyce Nature Reserve 23 24 D16087/T169 20 Western Cape paratype