Best Eurycea
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Eurycea rathbuni is a critically endangered cave salamander endemic to the Edwards Aquifer beneath San Marcos, Texas, with vestigial, skin-covered eyes adapted to permanent darkness.
Eurycea sosorum is a federally endangered aquatic salamander endemic to Barton Springs in Austin, Texas, listed under the U.S. Endangered Species Act in 1997.
Eurycea lucifuga is a slender, orange salamander of the eastern United States that inhabits cave entrances and limestone outcroppings rather than the cave interior proper.
A cave-dwelling lungless salamander (Eurycea spelaea) of the Ozark Plateau that metamorphoses into a depigmented, visually impaired adult fully adapted to subterranean cave environments.
Eurycea nana is a federally threatened, fully aquatic salamander found only in the spring-fed San Marcos River in Hays County, Texas, one of the smallest Eurycea species.
Eurycea longicauda is a lungless salamander of eastern North America whose tail can account for up to 65% of its total body length, among the highest ratios in the genus.
A small neotenic lungless salamander (Eurycea tynerensis) found in springs and caves of the Ozark Plateau in Oklahoma, Arkansas, and Missouri, retaining larval gill features throughout its adult life.
Eurycea bislineata is a small, abundant lungless salamander of eastern North America identified by two dark dorsal stripes running from head to tail tip.
Eurycea guttolineata is a slender salamander of the southeastern United States distinguished by three dark stripes along its yellowish body and a spotted underside.
