Adiscoacrilla herthae ( Boettger, 1906 )

Harzhauser, Mathias & Landau, Bernard M., 2025, The Epitoniidae (Gastropoda, Epitonioidea) of the Miocene Central Paratethys Sea-an overwhelming diversity, Zootaxa 5630 (1), pp. 1-142 : 25-26

publication ID	https://doi.org/10.11646/zootaxa.5630.1.1
publication LSID	lsid:zoobank.org:pub:89462472-D932-4255-880F-C6EF15220A31
persistent identifier	https://treatment.plazi.org/id/03D787A4-FFFD-FFFD-FF3F-F8B7FD6F9333
treatment provided by	Plazi
scientific name	Adiscoacrilla herthae ( Boettger, 1906 )
status

Treatment

Adiscoacrilla herthae ( Boettger, 1906)

Figs 7K View FIGURE 7 , 9E View FIGURE 9

* Scala (Adiscoacrilla) Herthae n. sp. — Boettger 1906: 92.

Acrilla Herthae Boettger— Cossmann 1912: 185 View in CoL , pl. 6, figs 2–3.

Scala (Acrilla) herthae (Boettger) — Zilch 1934: 230, pl. 10, fig. 78.

Acrilla (Acrilla) herthae Boettger— Korobkov 1955 : pl. 16, figs 25, 27.

? Amaea (Acrilla) interposita (Sacco) — Báldi 1960: 62, pl. 1, fig. 11 [non Adiscoacrilla interposita ( Sacco, 1891) ].

Acrilla herthae (Boettger) — Kókay 1966: 47, pl. 5, figs 5–6.

Acrilla View in CoL ex. gr. coppii de Boury— Kókay 1966: 47 , pl. 5, fig. 7.

Scala (Acrilla) herthae Boettger, 1905 — Švagrovský 1982: 28: pl. 9, fig. 5.

Type material. Holotype, SMF 380169 About SMF _12-1454 ( XII 1454 a), SL: 5.9 mm, MD: 2.1 mm, CoŞteiu de Sus ( Romania), illustrated in Zilch (1934: pl. 10, fig. 78), Figs 7K View FIGURE 7 , 9E View FIGURE 9 .

Revised description. Shell small, moderately slender turreted(apical angle22°).Protoconch and early teleoconch whorls unknown. Teleoconch whorls convex with weakly concave subsutural ramp, angled at shoulder placed just above mid-whorl, convex below. Suture deeply impressed. Sculpture of thin, slightly prosocline, moderately to strongly raised, moderately close-set lamellae, not aligned axially (?: ~14: ~17); adapical tips of lamellae weakly alate, crests of varices weakly rolled over. Interspaces with delicate spiral threads. Last whorl attaining about 40% of total height, with marked basal angulation delimited by prominent, slightly scalloped peribasal cord. Basal disc wide, flattened with prominent axial ribs, no spiral sculpture. Aperture ovate, columella weakly concave. Outer lip not preserved. Columellar callus forming thin, indistinct adherent rim.

Discussion. The holotype has only moderately raised lamellae, whereas a specimen from the Vienna Basin, illustrated by Švagrovský (1982), has higher lamellae, which are faintly pointed close to the adapical suture. Nevertheless, we treat both fragmentary specimens provisionally as conspecific. Adiscoacrilla coppii (de Boury, 1890) , from the Pliocene of Siena ( Italy), is exceptionally similar and differs mainly in its much larger size (SL: 20 mm) (de Boury 1890: pl. 4, fig. 1; Landau et al. 2006: 42). Other specimens of Adiscoacrilla coppii , from the Pliocene of the Toscana, are stockier with a wider last whorl (see Chirli 2009: pl. 18, figs 8–15). Adiscoacrilla lacunocostata ( Sacco, 1891) and A. depressocoppi ( Sacco, 1891) , from the Pliocene of Asti, are reminiscent of the Paratethyan species in their shell shape but differ in having fewer lamellae (see Sacco 1891: pl. 2, figs 66, 67). Adiscoacrilla opaliaeformis ( Sacco, 1891) differs in its more rounded basal angulation and narrower basal disc (see Sacco 1891: pl. 2, fig. 69). Adiscoacrilla villalvernensis ( Sacco, 1891) , from the Pliocene of the Mediterranean Sea, differs from A. herthae in its much stockier shape (see Landau et al. 2006: pl. 13, figs 9–10, pl. 14, fig 1). Adiscoacrilla silentiosa ( Cossmann & Peyrot, 1922) , from the Serravallian of France, is also stockier and has weaker lamellae (see Cossmann & Peyrot 1922: pl. 4, figs 64–65, 130–131).

Adiscoacrilla herthae is superficially reminiscent of the much larger Parviscala paratethyca sp. nov. in sculpture but the distinct basal disc excludes placement in Parviscala de Boury, 1887 .

Paleoenvironment. Shallow marine, inner neritic.

Distribution in Central Paratethys. Badenian (Middle Miocene): Vienna Basin: Borský Mikuláš ( Slovakia) ( Švagrovský 1982); Pannonian Basin: Herend ( Hungary) ( Kókay 1966),? Szokolya ( Hungary) ( Báldi 1960); Făget Basin: CoŞteiu de Sus ( Romania) ( Boettger, 1906).

MD	Museum Donaueschingen

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Taxonomy

Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Family	Epitoniidae
Genus	Adiscoacrilla