Biology:Moapa pebblesnail
| Moapa pebblesnail | |
|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Hydrobiidae |
| Genus: | Pyrgulopsis |
| Species: | P. avernalis
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| Binomial name | |
| Pyrgulopsis avernalis (Pilsbry, 1935)
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| Synonyms[3] | |
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The Moapa pebblesnail also known as the Muddy Valley turban snail, scientific name Pyrgulopsis avernalis, is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The natural habitat of this species is springs,[4] and it is currently threatened by habitat loss. This species is endemic to the Moapa Valley, Nevada, United States[4] and the common name refers to the Moapa River in Nevada.
Description
Pyrgulopsis avernalis is a small snail that has a height of 2.4–4.3 millimetres (0.094–0.169 in) and ovate conical shell. Its differentiated from other Pyrgulopsis in that its penial filament has a small lobe and large filament with the penial ornament consisting of a small terminal gland, a gland along the outer edge of the penial lobe and a ventral gland.[4]
Genus transfer
When originally described in 1935, it was assigned to the genus Fluminicola. In 1994, it was transferred to the genus Pyrgulopsis.[4]
References
- ↑ Cordeiro, J.; Perez, K. (2011). "Pyrgulopsis avernalis". IUCN Red List of Threatened Species 2011. doi:10.2305/IUCN.UK.2011-2.RLTS.T40047A10311032.en. https://www.iucnredlist.org/species/40047/10311032. Retrieved 16 November 2021.
- ↑ NatureServe. "Pyrgulopsis avernalis" (in en). Arlington, Virginia. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.118852/.
- ↑ "Pyrgulopsis avernalis (Pilsbry, 1935)". MolluscaBase. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=991517.
- ↑ 4.0 4.1 4.2 4.3 Hershler, Robert (1994). A Review of the North American Freshwater Snail Genus Pyrgulopsis (Hydrobiidae). Washington, DC: Smithsonian Institution Press. https://archive.org/details/reviewofnorthame0000hers_x4k5.
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