NATIONAL ACADEMY OF SCIENCES OF UKRAINE
State Museum of Natural History
Biodiversity Data Centre

Trochulus bielzi (A. Schmidt, 1860)

Synonym
  • Petasina (Filicinella) bielzi (E.A. Bielz, 1859)
  • Petasina bielzi (E.A. Bielz, 1859)
Vernacular Name

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Conservation status
RDBUkr: Вразливі; Endemic
Value of species
Remarks
This species is protected in Poland.
Detail
According to Falkner (1995), the correct year of description is 1859, which is accepted here. According to AnimalBase, it was mentioned in 1859 just as a nomen nudum and valid date of description is 1860 (AnimalBase). Soós (1943) treats this species as a subspecies of Petasina filicina, but according to Polinski (1924), it is a distinct species. There are two accepted subspecies: P. bielzi bielzi and P. bielzi euconus Westerlund, 1890. This species is distributed in the Eastern Carpathians and in the Apuseni Mountains. Distribution data are provided by Polinski (1924), Soós (1943), Grossu (1983), Wiktor (2004), Lisicky (1991), Kerney et al. (1983), Fehér et al. (2008) and Prockow (2009). There is also a recently found and therefore unpublished Hungarian occurrence (R. Farkas, in prep.). There are several known locations and at the present moment there is no evidence that the extent of occurrence (EOO), area of occupancy (AOO) or the number of locations are declining or extremely fluctuating. Within its relatively large range, this species does not seem to be rare. However, due to its special habitat preference, the population is fragmented. The species' range is not satisfactorily explored and there are no data on population trend. However, forest habitats are known to diminish in that region therefore one might suppose that number of subpopulations or the number of mature individuals are declining. This is a silvicol species with a preference for humid, deciduous forests which are relatively ancient and untouched by man. It lives on the ground among leaf-litter, under stones or decaying dead wood.
Book reference
  • Гураль-Сверлова Н.В., Гураль Р.І. Каталог колекції наземних молюсків Державного природознавчого музею НАН України. - Львів, 2020. - 227 с. [Еелектронний ресурс]
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  • Заморока А.М., Бідичак Р.М., Геряк Ю.М., Глотов С.В., Капрусь І.Я., Козоріз Ю.Г., Мартинов О.В., Михайлюк-Заморока О.В., Пушкар Т.І., Різун В.Б., Слободян О.М., Смірнов Н.А., Утєвський С.Ю., Шпарик В.Ю. Розповсюдження рідкісних видів безхребетних тварин, занесених до Червоної книги України, в Івано-Франківській області // Український ентомологічний журнал. – 2017. – 2(13). – С.77-94.
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Experts

Taxonomic branch

Biota
Eukaryota
Animalia
Eumetazoa
Mollusca
Mollusca_unranked_taxon
Gastropoda
Pulmonata_unassigned
Hygromiidae