Scutalus steerei (Pilsbry, 1900)

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: BULIMULIDAE

ESPÉCIE: Scutalus steerei (Pilsbry, 1900)

Tamanho médio: 38 mm

Ocorrência: Peru

Localidade tipo: Peru, sem localidade específica

Nome original: Bulimulus steerei Pilsbry, 1900

Sinônimos: Scutalus (Scutalus) steerei (Pilsbry, 1900)

Descrição original:

(Pilsbry, 1900): “Shell umbilicate and broadly rimate, ovate-conic, with straight-sided spire and convex last whorl, the base angular around a large umbilical excavation; solid and strong, opaque soiled white, with indistinct brown stains in most specimens, and usually an indistinct whiter girdle at the periphery, the apex white. Surface lustreless, finely wrinkled longitudinally, and densely granose in spiral series, as in B. proteus or B. Montezuma; the granules small but strongly expressed.

Apex obtuse, earlier 14 whorls strongly vermiculate-wrinkled, the wrinkles anastomosing and largely transformed into a netted pattern. Sutures not impressed, being filled by the peripheral keel of the young shell. Whorls 63, the first two convex, those following almost completely flat, the last whorl convex, without trace of a peripheral angle or carina, usually ascending in front. Aperture subyertical, ovate, built forward nearly to the level of the ventral convexity, brown tinted within; peristome broadly expanded, thickened within, brown or white, acute at the edge. Columella oblique, making an angle with the basal margin; its edge dilated; parietal callus moderate or slight, whitish.”

Fotos: (1,2) The Academy of Natural Sciences, Philadelphia: LECTOTYPE de Scutalus steerei, ANSP 78144, University of Michigan, J. B. Steere Expedition, 03.iv.1900

Fontes:

Descrição original: (como Bulimulus steerei Pilsbry, 1900) Pilsbry, H. A. (1900). New South American land snails. Proceedings of the Academy of Natural Sciences of Philadelphia. 52: 385-394, pls. 11-12, disponível online em https://www.biodiversitylibrary.org/page/24694265
página(s): 391

MolluscaBase: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1453158