Bostryx frederici Breure, 1978

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: BULIMULIDAE

ESPÉCIE: Bostryx frederici Breure, 1978

Tamanho médio: 9 mm

Ocorrência: Peru (Ancash)

Localidade tipo: Peru, Departamento de Ancash, 5 km SW Chavin de Huantar

Altitude: 3300 m

Nome original: Bostryx frederici Breure, 1978

Etimologia: o nome da espécie é uma homenagem ao Dr. Fred G. Thompson (Gainesville, Florida), que “coletou uma quantidade considerável de novo material durante suas viagens e que foi gentil o suficiente para me confiar a identificação dos Bulimulidae“

Descrição original:

(Breure, 1978): “Shell up to 9.2 mm, 1.1 times as long as wide, widely perforate, with straight sides, rather thin. Colour creamy white with irregular reddish-brown axial streaks, the upper whorls uniformly light brown. Penultimate whorl with a white band at the base of the whorl; this band is continuing at the last whorl slightly below the periphery; a second white band is present around the umbilicus. Surface nearly lustreless, the growth striae incrassate.

Protoconch with extremely low axial, anastomosing wrinkles, which are crossed by finer spiral lines. Whorls 5.3, rather convex, generally ascending in front; suture well impressed. Aperture rather variable in form, generally ovate; length axis of aperture forming an angle of ca. (30^45 degrees with the axis of the shell; about 1.1 times as long as wide, 0.52 times the total length. Peristome thin and simple. Columellar margin hardly dilated above.”

Fotos: (1) Breure, 1978: Bostryx frederici, HOLOTYPE UF 22801, Peru, Ancash, 5 km SW Chavin de Huantar, 8.8 mm

Figura: Breure, 1978: (4) Bostryx pauli, Peru, HOLOTYPE UF 22812, “Ancash, 1 km N Recuay”, coletor: Thompson, Fred, 21.iii.1972, 3410m, 14.2 mm; (5-6) Bostryx pauli,  PARATYPES (UF), Peru, Ancash, “20 km W Huaraz”; 15.0 e 14.0 mm respectivamente; (7-9) Bostryx frederici, HOLOTYPE UF 22801, Peru, Ancash, 5 km SW Chavin de Huantar, coletor: Thompson, Fred, 02.iv.1972, 8.8 mm

Figura 02: Breure, 1978: (112-116) PARATYPES de Bostryx frederici, Peru, Ancash, 5 km SW Chavin de Huantar,  UF 22802

Fontes:

Descrição original: Breure, A. S. H. (1978). Notes on and descriptions of Bulimulidae (Mollusca, Gastropoda). Zoologische Verhandelingen. 164(1): 3-255
página(s): 79, pl. 2 figs 5-9

MolluscaBase: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1341709