Order Caudata: Salamanders
Description: Salamanders are divided into nine families, with a total of some 400 species worldwide. More than half of these are found only in the New World, and the eastern and western regions of North America are centers of salamander diversity. Salamanders are tailed amphibians having four legs of more-or-less equal size. Most have vertical creases down their sides called costal grooves . They are easily distinguished from lizards – for which they are often confused – by a lack claws and scales.
Most salamander species are largely terrestrial as adults but lay their eggs in or near water. They undergo a gilled, aquatic larval stage before transforming into reproductive adults and dispersing to terrestrial habitats. Several species in New York and Pennsylvania remain aquatic as adults, retaining external gills throughout their lives - these include the Mudpuppy and the Hellbender. Salamanders that retain gills and other larval characteristics through sexual maturity are called neotenic . Several species in the family Plethodontidae – the lungless salamanders – lay their eggs on land and develope completely within the egg, skipping the free-living aquatic larval stage. Upon hatching they look essentially like miniature adults. Newts, members of the family Salamandridae, more-or-less reverse the standard salamander life-cycle. They have a brief aquatic stage followed by a terrestrial juvenile stage, and again become aquatic as adults. In most species fertilization is internal. Following a brief courtship display the male deposits spermatophores – small gelatinous structures with sperm masses on top – that the female picks up with her vent.
Salamanders are predators primarily of insects and other invertebrates. Some eastern species can be surprisingly abundant in the right habitat – up to several adults per square meter of forest floor – and, although poorly understood, are likely play important ecological roles in forest and aquatic communities.
Family Ambystomatidae, Mole Salamanders
Key Characteristics: Dark brown, gray or black with few bluish flecks along sides; toes long.
Habitat: Undisturbed deciduous forest, especially moist, well-drained forested uplands.
Key Characteristics: Black or grayish black with many blue or bluish-white spots on sides, back and tail; toes long.
Habitat: Blue-spotted Salamanders occupy coniferous, mixed and deciduous forest, in moist lowlands to moderately dry uplands. In western New York they appear to be more abundant in bottomland forest and wooded swamps.
Key Characteristics: Blackish or grayish with two rows of yellow spots on back.
Habitat: Spotted Salamanders occur in moist closed-canopy mixed or deciduous forest. They are typically found in lowland forest but can tolerate moderately dry upland conditions as well. These salamanders are less common in swamp forests that are subject to frequent flooding.
Key Characteristics: Black with silvery crossbands on back.
Habitat: Most common in moderately extensive tracts of moist lowland forest, but also occurs in upland areas on wooded, rocky hillsides and ridges.
Key Characteristics: Dark brown or black with irregularly shaped yellow blotches scattered across the back and sides;belly olive-yellow.
Habitat: A salamander of open habitats: marshes, grasslands and pastures.
Family Cryptobranchidae, Giant Salamanders And Hellbenders
Habitat: Associated with fast moving flows with large boulders for shelter. Found by carefully overturning large boulders.
Family Plethodontidae, Lungless Salamanders
Key Characteristics: Markings variable; light line extending from eye to angle of jaw; tail keeled.
Habitat: Almost always found in or within close proximity to moving water; mainly mountain brooks, seepages and springs.
Key Characteristics: Markings variable; light line extending from eye to angle of jaw; tail rounded.
Habitat: Almost always found in or within close proximity to moving water; mainly mountain brooks, seepages and springs.
Habitat: Under rocks, logs, and leaf litter adjacent to or in small rocky streams and seeps in mesic forest.
Key Characteristics: Yellowish or orangish background; black vermiculations on back and sides become vertical bars on sides of tail; tail long.
Habitat: Around rock outcrops or caves (usually in the vicinity of creeks and springs) in deeply dissected, forested landscapes. Often found under rocks and logs.
Habitat: Highly oxygenated water such as mountain seeps, cool springs, and fast moving streams.
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Habitat: Under rocks and logs on moist wooded hillsides and ravines. Retreat underground or to more mesic environments during the summer.
Habitat: Fairly extensive tracts of moist, closed-canopy forests, usually associated with rocky outcrops, streams, and steep topography. Occasionally found in more open habitats, but avoid seasonally flooded lowland forest.
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Habitat: Upland forests under rocks, rotting logs, and in rock crevices and caves.
Family Salamandridae, Newts And Salamanders
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Habitat: Adults are most commonly found in small, densely vegetated ponds, but can also be found in shallows of large lakes, river sloughs and backwaters, and swamps and marshes. Efts are found under rocks and logs in forested areas near the breeding ponds.