Idaholanx fresti, the Banbury Springs limpet or Banbury Springs lanx, is a rare species of freshwater snail, an aquatic gastropod mollusc in the family Lymnaeidae. It is the only species in the genus Idaholanx. First discovered in 1988, the species was formally described and named in 2017.
Distribution This freshwater limpet is endemic to the US State of Idaho, where it is known from a 10-kilometer stretch of the Snake River. It is found in four complexes of springs along the Snake River in south-central Idaho: Thousand Springs, Box Canyon Springs, Banbury Hot Springs, and Briggs Springs.USFWS.Banbury Springs Lanx Five-year Review. September 2006.
Description This snail is cinnamon red in color. The shell is conical in shape. It is up to 7.1 millimeters long by 6 wide and up to 4.3 millimeters tall.
This snail is similar in its morphology to species in the genus Lanx, but genetic analysis reveals that it is genetically more similar to the genus Fisherola.
Habitat Idaholanx fresti lives in fast flowing, clean, cold water springs. It needs highly oxygenated water.
Conservation In 1992 it was federally listed as an endangered species of the United States.USFWS. Determination of endangered or threatened status for five aquatic snails in South Central Idaho. Federal Register December 14, 1992. This species is endemic to Idaho. It only exists at four places: Thousand Springs, Box Canyon Springs, Briggs Springs and Banbury Springs. It is threatened by habitat modification, spring flow reduction, groundwater quality, and invasive species.
Diet Dead plants and diatoms.
References
External links https://idfg.idaho.gov/species/taxa/25757