| Antrorbis breweri | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Lithoglyphidae |
| Genus: | Antrorbis Hershler & Thompson, 1990[2] |
| Species: | A. breweri |
| Binomial name | |
| Antrorbis breweri Hershler & F. G. Thompson, 1990[2] |
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| Synonyms[2] | |
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Antrorbis breweri, common name Manitou cavesnail, is a species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Lithoglyphidae.[2]
Antrorbis breweri is the only species in the genus Antrorbis.[2] The generic name Antrorbis is derived from Classical Greek language word "antrum", that means a cave and from Greek language word "orbis", that means circle.[2]
The specific name breweri is in honor of Dr. Stephen Brewer, the owner of Manitou Cave.[2]
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This species is endemic to the United States and it is known only from its type locality.[1] The type locality is Manitou Cave, Little Wills Valley, Coosa River Basin, Fort Payne, Alabama.[2]
The shape of the shell is discoidal.[2] The shell has 2.5-3.0 whorls.[2]
The width of the shell is 1.53-1.79 mm.[2] The height of the shell is 0.80-0.98 mm.[2]
The length of the whole animal is 2.7-3.0 mm.[2]
Antrorbis breweri lives in cool stream in Manitou Cave.[2] It is threatened by habitat loss.[1]