Happia decaensi Gargominy, 2025

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: SCOLODONTINAE

ESPÉCIE: Happia decaensi Gargominy, 2025

Tamanho médio: 5.6 mm

Distribuição: Guiana Francesa

Localidade tipo: Guiana Francesa, Camopi, Mont Itoupé

Nome original: Happia decaensi Gargominy, 2025

Etimologia: o nome da espécie é uma homenagem ao francês Thibaud Decaëns, que coletou o material tipo. Decaëns é especialista em invertebrados

Zoobank: https://zoobank.org/DA2519E0-8142-4AD2-8081-572CDC0C4833

Descrição original:

(Gargominy, 2025): “Shell small (height 2.8 mm, greater diameter 5.6 mm), dextral, totally depressed, thin; colour pale corneous; whorls 3.8, inflated, rounded, slightly flattened on the upper part, overlapping the preceding, separated by a marked suture; spire planispiral, coiling rapidly increasing.

Protoconch 1.7 whorl, with ~ 10 delicate spiral threads hardly visible due to periostracal erosion, also visible from adapical view; protoconch/teleoconch transition distinct, particularly from adapical view; teleoconch smooth (but see remarks below), with sigmoid, prominent, closely spaced growth wrinkles with irregular levels of shell calcification underneath, radial on umbilical part of whorls, strongly rounded backwards near upper suture.

Body whorl rounded, strongly flattened above periphery up to a small bulge above the suture. Aperture prosocline, strongly sigmoid with an acute and deep (1 mm) incision in parietal angle, basally circular. Peristome simple, sharp. Umbilicus very large, almost half of the greater diameter, conical with flat protoconch entirely visible.”

Fotos: (1,2) Gargominy et al. 2025: Museu Nacional de História Natural, Paris: HOLOTYPE MNHN-IM-2013-75995, Camopi, Mont Itoupé, 800 m de altitude, 06.i.2016–17.i.2016, Thibaud Decaëns, Sébastien Cally leg.

Figura: Gargominy et al. 2025: Happia decaensi: (A–D) HOLOTYPE MNHN-IM-2013-75995; (E) PARATYPE MNHN-IM-2018-14429; (F) PARATYPE MNHN-IM-2018-14430; (G) PARATYPE MNHN-IM-2018-14431. Escala da barra: 5 mm

Fontes:

Descrição original: Gargominy, O.; Fontaine, B.; Tercerie, S.; Zuccon, D. (2025). New species and new records of families, genera and species of land snails (Mollusca, Gastropoda) from French Guiana. ZooKeys. 1230: 155-194., disponível online em https://doi.org/10.3897/zookeys.1230.133585
página(s): 184, fig. 20

Molluscabase: https://molluscabase.org/aphia.php?p=taxdetails&id=1802359