The Cascade Caverns salamander (''Eurycea latitans''), or Cascade Caverns neotenic salamander, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of aquatic

salamander Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All t ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to Cascade Caverns in

Kendall County, Texas Kendall County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2020 United States Census, 2020 census, its population was 44,279. Its county seat is Boerne, Texas, Boerne. The county is named for George Wilkins Kendall ...

. Like other species of cave salamanders, they are almost entirely subterranean, living in spring waters deep in

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

rock strata, so gauging the exact extent of their geographic range or even their population numbers is virtually impossible. This also leads to reduced sampling for study, which has led to some uncertainty in the taxonomic classification; some sources consider all species of Texas cave salamanders to be subspecies of the

Texas salamander ''Eurycea neotenes'', also known as the Texas salamander, Bexar County salamander, Edwards Plateau salamander, or Texas neotenic salamander, is a species of entirely aquatic, lungless salamander native to the United States. It is endemic to centr ...

. '' Eurycea neotenes'' and ''

Eurycea rathbuni The Texas blind salamander (''Eurycea rathbuni'') is a rare cave-dwelling troglobite amphibian native to San Marcos, Hays County, Texas, specifically the San Marcos Pool of the Edwards Aquifer. Description The species has a broad, flat, snout ...

'' also live in caves and eat small insects and spiders.

Description

The Cascade Caverns salamander is

translucent In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without appreciable scattering of light. On a macroscopic scale (one in which the dimensions ...

, with a faint net-shaped pattern that is brown in color, often with white speckling. The species is rarely seen, so the amount of variation in their coloration is unknown. They are

neotenic Neoteny (), also called juvenilization,Montagu, A. (1989). Growing Young. Bergin & Garvey: CT. is the delaying or slowing of the physiological, or somatic, development of an organism, typically an animal. Neoteny is found in modern humans compa ...

, meaning they retain characteristics into adulthood that are usually associated with juvenile salamanders, such as external gills. They have stout bodies, with short legs, and reduced eyes set under a layer of skin. This species of salamanders is threatened and could become endangered.

References

* Chippindale, P.T., A.H. Price, Wiens, J.J. & Hillis, D.M. (2000): Phylogenetic relationships of central Texas hemidactyliine plethodontid salamanders, genus ''Eurycea'', and a taxonomic revision of the group. ''Herpetological Monographs'' 14: 1-80. * Hillis, D.M., Chamberlain, D.A., Wilcox, T.P., & Chippindale, P.T. (2001): A new species of subterranean blind salamander (Plethodontidae: Hemidactyliini: ''Eurycea'': ''Typhlomolge'') from Austin, Texas, and a systematic revision of central Texas paedomorphic salamanders. ''Herpetologica'' 57: 266–280.

External links

*
Herps of Texas: ''Eurycea latitans''
Latitans Plethodon Cave salamanders Amphibians described in 1946 {{Plethodontidae-stub