Bostryx turritus
Encyclopedia
Bostryx turritus is a species
of tropical air-breathing land snail
, a pulmonate gastropod mollusk in the family Orthalicidae
.
This species was known from Trujillo Province in La Libertad Region
(Pilsbry
, 1896) and Pariacoto in Ancash Region
(Haas
, 1955). Recently, Ramírez (2004) reported it from Cerro Pasamayo and Salinas de Huacho in Lima Region
. She also refers to unpublished data by Weyrauch, who collected the species at Cerro Campana, 14 km north of Trujillo
07°58’54’S 079°06’24’W (selected as type locality by Ramírez) and near Chilete in Cajamarca Region
. Breure (1978) reported the species from the same department near Magdalena. Breure (2010) reported it from Catzcal 1050 m, 09°54’43’S 077°49’40’W, Ancash Region
, Peru.
Zilch (1953) reports Bostryx turritus turritus (shell height/shell width = 3.25) from Hacienda El Casa Grande (probably near 07°40’S 078°40’W) in La Libertad Region
, and described Bostryx turritus tamboensis (shell height/shell width = 2.87) from the same locality, albeit from different elevations (1500 m resp. 1000 m). According to Haas (1955) – reporting a locality at 1360 m – his shells ‘are slightly more slender than the typical form’. The specimens from Catzcal show a variation in ration shell height/shell width from 2.84 to 3.18 (mean 3.00; n = 7). It is possible that this variation can also be found in the populations at the localities in La Libertad, in which case Bostryx turritus tamboensis should be considered a synonym of the nominate taxon.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of tropical air-breathing land snail
Land snail
A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...
, a pulmonate gastropod mollusk in the family Orthalicidae
Orthalicidae
Orthalicidae are a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks are classified in the informal group Sigmurethra of the clade Stylommatophora...
.
Distribution
This species was known from Trujillo Province in La Libertad Region
La Libertad Region
La Libertad is a region in northwestern Peru. Formerly it was known as the 'Department of La Libertad" , a political division that generally corresponds to a state in the United States of America...
(Pilsbry
Henry Augustus Pilsbry
Henry Augustus Pilsbry was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a century...
, 1896) and Pariacoto in Ancash Region
Ancash Region
Ancash is a region in northern Peru. It is bordered by the La Libertad region on the north, the Huánuco and Pasco regions on the east, the Lima region on the south, and the Pacific Ocean on the west. Its capital is the city of Huaraz, and its largest city and port is Chimbote...
(Haas
Fritz Haas (zoologist)
Fritz Haas was a Jewish German zoologist born in Frankfurt-am-Main. He specialized in the field of malacology....
, 1955). Recently, Ramírez (2004) reported it from Cerro Pasamayo and Salinas de Huacho in Lima Region
Lima Region
Lima Region, also known as Lima Provincias, is one of twenty-five regions of Peru. Located in the central coast of the country, its regional seat is Huacho....
. She also refers to unpublished data by Weyrauch, who collected the species at Cerro Campana, 14 km north of Trujillo
Trujillo, Peru
Trujillo, in northwestern Peru, is the capital of the La Libertad Region, and the third largest city in Peru. The urban area has 811,979 inhabitants and is an economic hub in northern Peru...
07°58’54’S 079°06’24’W (selected as type locality by Ramírez) and near Chilete in Cajamarca Region
Cajamarca Region
Cajamarca is a region in Peru. The capital is the city of Cajamarca. It is located in the north part of the country and shares a border with Ecuador...
. Breure (1978) reported the species from the same department near Magdalena. Breure (2010) reported it from Catzcal 1050 m, 09°54’43’S 077°49’40’W, Ancash Region
Ancash Region
Ancash is a region in northern Peru. It is bordered by the La Libertad region on the north, the Huánuco and Pasco regions on the east, the Lima region on the south, and the Pacific Ocean on the west. Its capital is the city of Huaraz, and its largest city and port is Chimbote...
, Peru.
Zilch (1953) reports Bostryx turritus turritus (shell height/shell width = 3.25) from Hacienda El Casa Grande (probably near 07°40’S 078°40’W) in La Libertad Region
La Libertad Region
La Libertad is a region in northwestern Peru. Formerly it was known as the 'Department of La Libertad" , a political division that generally corresponds to a state in the United States of America...
, and described Bostryx turritus tamboensis (shell height/shell width = 2.87) from the same locality, albeit from different elevations (1500 m resp. 1000 m). According to Haas (1955) – reporting a locality at 1360 m – his shells ‘are slightly more slender than the typical form’. The specimens from Catzcal show a variation in ration shell height/shell width from 2.84 to 3.18 (mean 3.00; n = 7). It is possible that this variation can also be found in the populations at the localities in La Libertad, in which case Bostryx turritus tamboensis should be considered a synonym of the nominate taxon.