| Valley and ridge salamander | |
|---|---|
 | |
| From Indiana County, Pennsylvania | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Urodela |
| Family: | Plethodontidae |
| Subfamily: | Plethodontinae |
| Genus: | Plethodon |
| Species: | P. hoffmani |
| Binomial name | |
| Plethodon hoffmani Highton, 1972 | |
The valley and ridge salamander (Plethodon hoffmani) is a species of salamander in the family Plethodontidae endemic to the Appalachian Mountains in the eastern United States.
The species is named after biologist Richard Hoffman of Virginia, who collected the holotype specimen in 1954. [2]
The valley and ridge salamander is a terrestrial salamander which a total length of 80 to 137 millimetres (3.1 to 5.4 in). This species is slender with short legs, a long tail, and 21 costal grooves. The dorsum is dark brown to blackish with scattered whitish or brassy flecks and the venter is dark with mottling, especially on the chin. [3]
The natural habitat of the valley and ridge salamander is hardwood forests of the Valley and Ridge province of the Appalachian Mountains, up to 1,400 m (4,600 ft) in elevation. This species can be found in the Appalachians from the Susquehanna River Valley in central Pennsylvania, through western Maryland and eastern West Virginia, south to the New River in southwestern Virginia. [1]
The species occurs in terrestrial valley and ridge physiography, generally in mature hardwood forests with well-drained soils. It lays eggs in moist cavities, where they develop directly without a larval stage. [1] Individuals can be found under logs and rocks and tolerate cool weather well. In wet weather, they forage in leaf litter and as the surface dries, retreat to damp covered areas. [4] They tend to be found on slightly drier slopes than their close relative, the red-backed salamander. [5]
The southern red-backed salamander is a species of salamander endemic to the United States. It is found in four widely disjunct populations: one in central Louisiana; one in the Ouachita Mountains of Arkansas and Oklahoma; one in central Missouri; and one from southeastern Tennessee, to southwestern North Carolina, western Georgia, and eastern Alabama. It is sometimes referred to as the Georgia red-backed salamander or the Ouachita red-backed salamander. It was once considered a subspecies of the red-backed salamander, Plethodon cinereus.
The Cheat Mountain salamander is a species of small woodland salamander in the family Plethodontidae. The species is found only on Cheat Mountain, and a few nearby mountains, in the eastern highlands of West Virginia. It and the West Virginia spring salamander are the only vertebrate species with geographic ranges restricted to that state.
The seal salamander is a species of lungless salamander that is endemic to the Eastern United States.
The three-lined salamander is a species of salamander in the family Plethodontidae. It is endemic to the south-eastern United States. This species was classified as a sub-species of long tailed salamanders until DNA sequencing revealed that there was no hybridization between the two species. Like other Plethodontidae species, E. guttolineata captures prey via tongue projection.
The white-spotted slimy salamander is a species of salamander in the family Plethodontidae endemic to the Eastern United States. It is one of 55 species in the genus Plethodon, and was one of the first to be described of its cogeners. The preferred habitat of this species is under logs and leaf litter in shaded hardwood forests and wooded floodplains, and often forages on the forest floor on wet nights. It was found that with increasing temperatures, the aggression in this species also increases. In the plethodon genus, species have a lungless morphology, restricting nearly all gas and water exchange transport to the body surface. This species mainly consumes insects, including ants, centipedes, springtails, crickets, millipedes, slugs, snout-beetles, and earthworms. Common predators of this species are gartersnakes, copperheads, and birds. One of their predator defense mechanisms is the release of noxious/sticky substances through the skin by the dorsal granular glands. Another predator deterrent is when touched, this species will freeze in place and become immobile. This species of Plethodon are mostly terrestrial and deposit their direct-developing eggs on land that omits the aquatic larval stage characteristic of most amphibians, therefore this species is not restricted to aquatic habitats for reproduction and dispersal. This species, along with other Plethodontid salamanders, are frequently parasitized by Trombicula mites.
The northern ravine salamander is a species of salamander in the family Plethodontidae. The species is endemic to the United States.
The Peaks of Otter salamander is a species of salamanders in the family Plethodontidae. It is endemic to the Peaks of Otter area in the Blue Ridge Mountains of Virginia. It is a montane salamander found at elevations above 442 m (1,450 ft), but more commonly above 760 m (2,490 ft). It can be locally common, but its distribution is small and patchy. This makes it vulnerable to local threats such as timber harvesting, recreational development, defoliation by gypsy moths, and spraying to control the latter.
The red-cheeked salamander, also known as the Jordan's salamander, Jordan's redcheek salamander, or Appalachian woodland salamander, is a species of salamander in the family Plethodontidae. It is endemic to the Appalachian Mountains in the southeastern United States.
The Cumberland Plateau salamander is a species of salamander in the family Plethodontidae. It is endemic to the Cumberland Plateau, the southeastern United States. Its natural habitat is temperate forests. It is threatened by habitat loss.
The northern gray-cheeked salamander is a species of salamander in the family Plethodontidae and endemic to the Blue Ridge Mountains and Appalachian Mountains in the eastern United States. It is closely related to the Red-cheeked salamander and the Red-legged salamander. Its natural habitat is temperate forests. It is found under moss, rocks, logs, and bark in cool, moist forests above 2500 feet. Especially found in spruce-fir forests. The Gray-cheeked Salamander commonly eats millipedes, earthworms, crane flies, spiders, and centipedes and less commonly eats ants, mites, and springtails. They eat spiders, moths, flies, beetles, bees, and snails. The male and female perform a courtship, where the male nudges the female with his snout, does a foot dance, then circles under the female and the two then walk together. Like other salamanders, they do not migrate or aggregate during breeding season. It is threatened by habitat loss.
Plethodon punctatus, commonly known as the Cow Knob salamander or white-spotted salamander, is a species of salamander in the family Plethodontidae. It is endemic to high mountain forests on the border of Virginia and West Virginia in the United States. Nearly all occurrences are on Shenandoah Mountain, Nathaniel Mountain and Great North Mountain in George Washington National Forest. Cow Knob salamanders are a member of the P. wehrlei species complex, which includes many other Appalachian salamanders historically referred to Plethodon wehrlei.
The ravine salamander is a species of salamander in the family Plethodontidae. The species is endemic to the United States, and it is threatened by habitat loss.
The Shenandoah salamander is a small, terrestrial salamander found exclusively in Shenandoah National Park in Virginia. The Shenandoah salamander inhabits a very small range of land on just three mountain peaks. Due to the small habitat range, interspecies competition, and climate change, the population of the Shenandoah salamander is vulnerable to extinction. Mitigating human effects on the habitat of the species will be essential in attempting to preserve and grow the population.
The red-legged salamander is a species of salamander in the family Plethodontidae. Formerly considered a subspecies of Plethodon jordani, it is native to the mountain forests of the southeastern United States.
The Shenandoah Mountain salamander is a species of salamander in the family Plethodontidae native to the eastern United States. It should not be confused with the Shenandoah salamander, which inhabits Shenandoah National Park, east of Shenandoah Mountain.
Weller's salamander is a species of salamander in the family Plethodontidae. This species in endemic to the southeastern mountain range of the United States. It is mainly found in North Carolina near Grandfather Mountain. The salamanders have a unique metallic spotting which distinguishes them from other Plethodon species and other salamanders in the area. They mainly inhabit cool forests with rocky areas.
The Yonahlossee salamander is a particularly large woodland salamander from the southern Appalachian Mountains in the United States. The species is a member of the family Plethodontidae, which is characterized by being lungless and reproductive direct development. P. yonahlossee was first described in 1917 by E.R Dunn on a collection site on Grandfather Mountain in North Carolina. The common and specific name is of Native American origin, meaning “trail of the bear”. It is derived from Yonahlossee Road northeast of Linville, where the specimen was first described.
