CLASSE: GASTROPODA: TERRESTRE
FAMÍLIA: BULIMULIDAE
ESPÉCIE: Stenostylus perturbatus Breure, 2011
Tamanho médio: 56 mm
Ocorrência: Peru, Departamento de Pasco
Localidade tipo: Peru, Departamento de Pasco, Huancabamba
Nome original: Stenostylus perturbatus Breure, 2011
Etimologia: o nome da espécie derivada da palavra em Latim “perturbatus“, inquieto; uma referência ao padrão distinto da concha
Zoobank: urn:lsid:zoobank.org:act:D4D62ABB-D38C-458C-99CD-506CC09E3BB3
Descrição original:
(Breure, 2011): “Shell 56.5 mm, 2.0 times as long as wide, elongate, with straight sides, imperforate; rather thin. Colour dark-brown to blackish, with axially oriented, yellowish lines, varying from small to somewhat broader, in some places forming patches, but always irregular, never from suture to suture; upper whorls light-brown, the first ones denuded of the periostracum.
Surface rather shining, with thickened growth striae where the colour is yellowish; some traces of spiral impressions, especially visible at the upper side of the last whorl. Protoconch eroded. Whorls 6.2, slight convex, the last 0.75 total shell height; suture well impressed. Aperture elongate-ovate, 0.45 times shell height, 1.49 times as long as wide, somewhat shining inside, whitish. Peristome thin, hardly expanded; columellar margin thin, curved, transitioning into the parietal wall, which has a very thin, whitish callus”
Fotos: (1) Breure, 2011: Stenostylus perturbatus, HOLOTYPE RBINS/MT698 (H=56.5 mm), ex Preston, 30.xii.1909

Figura: Breure, 2011: (A-B) Stenostylus perturbatus, HOLOTYPE RBINS/MT698 (H=56.5 mm); (C–E) Suniellus adriani, HOLOTYPE RBINS/MT2378 (H=32.5mm)
Fontes:
Descrição original: Breure, A. S. H. (2011). Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda) in the Royal Belgian Institute of Sciences, Brussels, with descriptions of two new species. ZooKeys. 101: 1-50., disponível online em https://doi.org/10.3897/zookeys.101.1133
página(s): 44, fig 17A-B
MolluscaBase: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1353676