Systrophia riojaensis Roosen & Dorado, 2025

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: SCOLODONTIDAE

ESPÉCIE: Systrophia riojaensis Roosen & Dorado, 2025

Tamanho médio: 11.9 – 13.5 mm

Distribuição: Peru (San Martin)

Localidade tipo: Peru, “San Martin Department, Rioja Province, Nueva Cajamarca, near Cueva de Palestina”

Nome original: Systrophia riojaensis Roosen & Dorado, 2025

Etimologia: o nome da espécie é uma referência à localidade tipo, a Privíncia de Rioja

Descrição original:

(Roosen & Dorado 2025): “Shell strongly depressed, average size for the genus, with a sunken spire; no distinction between the protoconch and teleoconch. Whorl diameter small, only slowly increasing in width, creating a maze-like appear-ance from apical view. Sculpture consists solely of growth lines and numerous indistinct axial ribs. Aperture and preceding section of whorl slightly deflected, widened, impressed from the side. In fully adult specimens, a nudge in the impression creates a small denticle on the inside of the shell. Peristome only slightly thickened and reflected. Umbilicus wide, up to 50% of total width. Colour of the per-iostracum corneous-brown, shell whitish transparent”

Fotos: (1,2) Roosen & Dorado, 2025: Museu de Ciències Naturals de Barcelona, Spain: HOLOTYPE MZB 2025-0734, “Peru, San Martin Department, Rioja Province, Nueva Cajamarca, near Cueva de Palestina”

Fontes:

Descrição original: Roosen, M.T. & Dorado, C. (2025). New Scolodontidae (Gastropoda: Pulmonata) from Peru and Ecuador: description of a new species of Guestieria Crosse, 1872, Luteostriatella Roosen & Breure, 2024, and three new species of Systrophia L. Pfeiffer, 1855. Basteria. 89(1): 36-42.
página(s): 40, fig. 4

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1823641