Aplus moravicus (Hoernes & Auinger, 1890)

Harzhauser, Mathias & Landau, Bernard M., 2024, The Colubrariidae, Eosiphonidae, Melongenidae, Pisaniidae, Prodotiidae and Tudiclidae (Gastropoda, Buccinoidea) of the Miocene Paratethys Sea, Zootaxa 5427 (1), pp. 1-110 : 30-31

publication ID	https://doi.org/ 10.11646/zootaxa.5427.1.1
publication LSID	lsid:zoobank.org:pub:923206B0-E8C5-4FD5-B882-55009ABB0282
persistent identifier	https://treatment.plazi.org/id/03CE9F1C-FF87-0C59-FF65-FDCFEF11F872
treatment provided by	Plazi
scientific name	Aplus moravicus (Hoernes & Auinger, 1890)
status

Treatment

Figs 14A–C View FIGURE 14 , 15A View FIGURE 15

* Pollia Moravica nov. form.—Hoernes & Auinger 1890: 238, pl. 28, fig 4a–b.

Type material. Lectotype (designated herein): NHMW 1862 View Materials /0029/0034, SL: 18.6 mm, MD: 10.6 mm, Rudice u Blanska ( Czech Republic), illustrated in Hoernes & Auinger (1890: pl. 28, fig. 4), Figs 14A View FIGURE 14 1 –A View FIGURE 1 2 View FIGURE 2 , 15A View FIGURE 15 . Paralectotypes: NHMW 2023 View Materials /0353/0001, SL: 19.4 mm , MD: 10.2 mm, Rudice u Blanska ( Czech Republic), Figs 14B View FIGURE 14 1 –B View FIGURE 1 2 View FIGURE 2 . NHMW 2023 View Materials /0353/0002, SL: 15.5 mm , MD: 8.4 mm, Rudice u Blanska ( Czech Republic), Fig. 14C View FIGURE 14 .

Revised description. Small, squat ovate-fusiform shell of up to 4.5 teleoconch whorls; apical angle 68–72°. Protoconch, broad conical of three moderately convex whorls; diameter: 900μm, height: 800μm. Last protoconch whorl with spiral cord placed just above abapical suture. First teleoconch whorl moderately convex with widely spaced axial ribs, overrun by three prominent spiral cords, strongly swollen over intersections; fourth weaker cord appears over subsutural ramp on second teleoconch whorl. Later teleoconch whorls convex, periphery slightly below mid-whorl. Three raised, narrow spiral cords appear on subsutural ramp on second teleoconch whorl. Suture strongly undulating around swollen intersections of abapical cord on preceding whorl. Interspaces between primary ribs deep, with 1–3 secondary spiral threads intercalated. Last whorl 70% of total height, with regularly convex periphery and strongly constricted base; sculpture of about 15 prosocline axial ribs overrun by about 12 strongly raised, convex cords, swollen over intersections; adapical three cords more closely spaced; fasciole broad, indistinct bearing strong spiral cords deeply cut by growth lines forming slightly scabrous surface. Aperture wide. Columella deeply excavated in upper half, angled at transition to siphonal canal, accentuated by prominent denticle at angulation. Columellar callus forming thin rim, moderately delimited from base. Columella with subobsolete denticles. Parietal denticle weak. Anal canal weakly incised, broadly U-shaped. No anal denticle. Outer lip weakly thickened with several narrow prominent lirae extending deep within, starting distinctly behind crenulated peristome. Siphonal canal long, very wide, slightly deflected to the left.

Discussion. Only subadult specimens are available and therefore, the parietal and anal denticles are not fully developed. Aplus moravicus (Hoernes &Auinger, 1890) is characterized by its prominent, regular, nodulose sculpture and evenly convex whorls. It is listed as synonym of the extant Mediterranean Aplus dorbignyi ( Payraudeau, 1826) by MolluscaBase Eds. (2023d). However, the two have little in common and Aplus dorbignyi is slenderer, has angled whorls with a broad subsutural ramp, coarser and less uniform tubercles and much more prominent denticles within the outer lip (see Aissaoui et al. 2016: figs 3A–B). Aplus multicostatus ( Bellardi, 1873) , from the Burdigalian or Langhian of the Colli Torinesi ( Italy), is morphologically much closer but differs in its higher last whorl, broader and more prominent axial ribs on the last whorl, and the prominent anal denticle (see Bellardi 1873: pl. 12, fig. 15; Ferrero Mortara et al. 1981: pl. 4, fig. 10).

Paleoenvironment. Shallow marine, inner neritic.

Distribution in Central Paratethys. Badenian (Middle Miocene): North-Alpine-Carpathian Foreland Basin: Rudice u Blanska ( Czech Republic) (Hoernes & Auinger 1890).