Aphaostracon

Aphaostracon is a genus of very small or minute freshwater snails in the family Cochliopidae that have an operculum.
Aphaostracon species are endemic to restricted areas in Florida, often to a single spring or spring run.

Species

This genus includes the following species:

Species	Common name	Range
Aphaostracon asthenes	Blue Spring hydrobe	Blue Spring
Aphaostracon chalarogyrum	freemouth hydrobe	Magnesia Springs in
Aphaostracon hypohyalinum	Suwannee hydrobe	Suwannee, Santa [Fe River (Florida)\|Santa Fe], and Waccasassa rivers
Aphaostracon monas	Wekiwa hydrobe	Wekiwa Springs
Aphaostracon pachynotum	thick-shelled hydrobe	upper half of St. Johns River
Aphaostracon pycnum	dense hydrobe	Alexander Springs, Silver Glen Springs
Aphaostracon rhadinum	slough hydrobe	tributaries of lower St. Johns River
Aphaostracon theiocrenetum	Clifton Spring hydrobe	Overlook [Park (Oviedo, Florida)\|Clifton Springs]
Aphaostracon xynoelictum	Fenney Spring hydrobe	Fenney Spring, in Sumter County

One or more additional Aphaostracon species have been reported from springs in Florida, including Bugg Spring, De [Leon Springs State Park|De Leon Springs], and Green Springs. The snails from the three springs have not described in an authoritative publication, and it is not known if they belong to one, two, or three species.