Charopatagonia fragilis Miquel & G. M. Barker, 2023

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: CHAROPIDAE

ESPÉCIE: Charopatagonia fragilis Miquel & G. M. Barker, 2023

Tamanho médio: 2.75 mm

Distribuição: Chile (Concepción)

Localidade tipo: Chile, Concepción, Parque Botánico Hualpén

Altitude: ~30 m

Nome original: Charopatagonia fragilis Miquel & G. M. Barker, 2023

Etimologia: o nome da espécie é uma referência à fragilidade da concha

Descrição original:

(Miquel & G. M. Barker, 2023): Shell of minute, up to 2.75 mm width, discoidal, spire very weakly elevated, body whorl descending slightly more rapidly, height to width ratio 0.38; with 4.25 convex whorls regularly increasing in width; walls very thin, pliable and fragile, rather translucent; ornamented with conspicuous radial ribs; aperture 0.76 shell height, broad, rounded, little descendant; umbilicus narrow at 0.20 shell width. Protoconch essentially discoidal, with 1.75 whorls, first nuclear part bulbous, without sculpture, subsequently with ~ 15 rounded spiral cords or lirae that become obsolete just before commencement of teleoconch; radial sculpture entirely lacking.

Teleoconch up to 2.5 whorls, with radial ribs somewhat irregularly spaced, running more or less straight to weakly and broadly sigmoidal over shell periphery, each surmounted by elevated double blade-like periostracal lamellae; region between ribs with 4 to 9 closely spaced riblets or microradials, each bearing elevated  periostracal blade of variable height, and very fine spiral cords occasionally nodular at intersection with riblets. Holotype with 105 radial ribs on last whorl.

Suture deeply impressed. Periostracum pale cream, translucent, with traces of reddish flammulations; shell colouration in live material strongly influenced
by underlying animal tissues (especially red-brown of digestive gland and cream-brown ovotestis).”

Fotos: Miquel & G. M. Barker, 2023: Charopatagonia fragilis, PARATYPE MACN-In 44062

Fontes:

Descrição original: Miquel, S. E. & Barker, G. M. (2023). Charopatagonia, a new genus of Charopidae from meridional America, with description of two new species (Mollusca, Eupulmonata, Punctoidea). Spixiana. 45(2): 159-167.
página(s): 161, figs 1, 2A-B, 3A-C

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1648698