Spartocentrum vanduzeei (G. D. Hanna, 1923)

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: BULIMULIDAE

ESPÉCIE: Spartocentrum vanduzeei (G. D. Hanna, 1923)

Tamanho médio: 24 – 25 mm

Ocorrência: México, Baja California

Localidade tipo: Baja Califórnia Sur, “W side of Porto Escondido”

Nome original: Coelocentrum vanduzeei G. D. Hanna, 1923

Descrição original:

(Hanna, 1923): “Shell larger than C. irregulare, bullet-shaped, composed of 17 rounded whorls; suture deeply impressed ; first three whorls of almost equal diameter, the third being slightly less than the one above; from the third to the fourteenth the diameter increases slightly, then decreases to the last; all whorls sculptured with coarse ribbing except the third; this one only has the vertical ribs cut by about nine deep spiral grooves, making the surface beaded; penultimate whorl with 86 ribs;

Aperture straight above, slightly oblique, and expanded; peristome continuous and sharp; columellar wall with a rounded ridge bounded by a rounded groove in lower basal angle; last 3.2 mm. of last whorl free from one preceding; umbilicus perforate, the opening about .5 mm. in diameter; axis hollow throughout, the opening in center of shell being two mm. in diameter ; a heavy spiral cord is centrally located on the axis of each whorl; below and above are concave excavations; this cord forms an external rounded ridge bounding the umbilical depression.”

Fotos: (1) The Academy of Natural Sciences of Philadelphia: TOPOTYPE, Puerto Escondido, Baja California, México, coll. Lowe, H. N.

Fontes:

Descrição original: (como Coelocentrum vanduzeei G. D. Hanna, 1923) Hanna, G. D. (1923). Expedition of the California Academy of Sciences to the Gulf of California in 1921. Land and freshwater mollusks. Proceedings of the California Academy of Sciences. ser. 4, 12(26): 483-527, pls 7-11., disponível online em https://www.biodiversitylibrary.org/page/26874971
página(s): 508

Christensen, C. C. & Miller, W. B. (1975). Genital anatomy and phylogeny of the snails, Berendtia Crosse and Fischer and Spartocentrum Dall (Stylommatophora: Bulimulidae). The Nautilus. 89(2): 43-46, figs. 1-7., disponível online em https://www.biodiversitylibrary.org/page/16319391

Pilsbry, H. A. (1900). Lower Californian species of Coelocentrum and Berendtia. Proceedings of the Academy of Natural Sciences of Philadelphia. 52: 550-555., disponível online em https://www.biodiversitylibrary.org/page/24694430
página(s): 551

Thompson, F. G. (2011). An annotated checklist and bibliography of the land and freshwater snails of México and Central America. Florida Museum of Natural History Bulletin. 50(1): 1-299

Breure, Bram. (1978). Notes on and descriptions of Bulimulidae (Mollusca, Gastropoda). Zoologische Verhandelingen. 164

MolluscaBase: https://molluscabase.org/aphia.php?p=taxdetails&id=1064276