Pichikadi hualpensis Vargas-Almonacid & Stuardo, 2007

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: PUNCTIDAE

ESPÉCIE: Pichikadi hualpensis Vargas-Almonacid & Stuardo, 2007

Tamanho médio: ~1.5 mm

Distribuição: Chile (VIII Región)

Localidade tipo: Chile, VIII Región, Península de Hualpén

Nome original: Pichikadi hualpensis Vargas-Almonacid & Stuardo, 2007

Etimologia: o nome da espécie é uma referência à localidade tipo

Descrição original:

(Vargas-Almonacid & Stuardo, 2007): “Shell small, fragile, lenticular subdiscoidal, uniformly coloured shiny yellowish to light brown. Spire convex, gently tapering with regular rapid growth and the apex slightly elevated above the protoconch. With 3 7/8 to 4 1/4 convex whorls. External and internal (umbilical) surfaces sculptured with 48 and 30 slender radial ribs appearing irregularly distributed on the second whorl but becoming regular on the last ones. Ribs separated by a mesh of regular, fine growth striae, crossed by a dense system of spiral striae, only detected with SEM. The spiral striae cover the whole shell surface but become more conspicuous at the umbilical area.

Umbilicus narrow, not very deep, approximately equal to a 1/4 of the largest shell diameter. Aperture sub-ovate (semilunar), with a sharp, slightly swollen on the columellar, without calluses at the parietal union. Protoconch sculptured with about 15 fine parallel spiral striae, covering the first two whorls and gradually mixing with the microsculpture to form the sculpture proper.”

Fotos: (1) Vargas-Almonacid, P. & Stuardo, J.R. (2007): PARATYPE, lote não informado na publicação original

Figura: Vargas-Almonacid, P. & Stuardo, J.R. (2007): vistas de um PARATYPE, sem lote informado na publicação original

Fontes:

Descrição original: Vargas-Almonacid, P. & Stuardo, J.R. (2007). Dos géneros nuevos de caracoles terretres (Stylommatophora: Arionacea) de Chile. Revista de Biología Tropical, 55 (2): 693-708.
página(s): 698

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1506289