Speleomantes

Speleomantes, or European cave salamanders, are a genus of salamander in the family Plethodontidae, or lungless salamanders. It is one of two genera in the family to inhabit the Old World (the other being Karsenia), with the remaining 250 or so species being found in North, Central and South America. The genus is endemic to Italy and a few nearby areas (San Marino, Monaco, and eastern Provence).

European cave salamanders
Temporal range: Miocene–Recent
Supramonte cave salamander, Speleomantes supramontis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Plethodontidae
Subfamily: Plethodontinae
Genus: Speleomantes
Dubois, 1984

Characteristics

Until recently, Speleomantes was combined with the web-toed salamander genus Hydromantes from the Sierra Nevada range of California, which are their closest relatives, and are still combined together by some herpetologists. They lack lungs; respiration takes place through the skin, which must be kept moist, and the lining of the mouth. The head is broad and distinct with prominent eyes. There are characteristic deep nasolabial grooves between the nostrils and the edge of the lips. The tongue has a broad tip and is extensible, being shot forward to catch prey. The tail is short, less than half the length of the body, and limbs are robust. The toes often have blunt tips and are partially webbed.[1]

Behaviour

European cave salamanders are found not only in caverns but on the ground among leaf litter, usually near streams, in wooded valleys. In the open air these salamanders are nocturnal, emerging in wet weather to forage but retreating in dry weather into caves and crevices or hiding beneath stones or logs. When underground they are active at any time of day. They are agile and can climb on rock outcrops or vertical cave walls, using their tails as props. The skin secretes toxic substances, which may deter predators, as may their habit of rolling their tail upwards.[1]

Males are a little smaller than females. They mate on land after an elaborate courtship routine. The female lays up to a dozen eggs in a damp crevice and guards them until they hatch in six months to a year; during this time she does not normally eat, though it has been known for females to eat some of their eggs.[1] The young emerge as miniature adults about 2 cm (0.8 in) without an intervening tadpole phase.[1]

Species

The genus contains the following species:[2]

ImageScientific nameCommon NameDistribution
Speleomantes ambrosiiAmbrosi's cave salamandersouth-eastern France and north-western Italy
Speleomantes flavusMonte Albo cave salamanderSardinia, Italy.
Speleomantes geneiGene's cave salamandersouth-western Sardinia, Italy.
Speleomantes imperialisImperial cave salamanderSardinia, Italy.
Speleomantes italicusItalian cave salamanderItaly
Speleomantes sarrabusensisSarrabus' cave salamandersouth-eastern Sardinia, Italy.
Speleomantes strinatiiStrinati's cave salamandernorth-western Italy and south-eastern France
Speleomantes supramontisSupramonte cave salamanderSardinia, Italy.

Evolutionary history

The oldest record of Speleomantes is a single vertebra from the Middle Miocene of Slovakia.[3]

References
  1. Arnold, E. Nicholas; Ovenden, Denys W. (2002). Field Guide: Reptiles & Amphibians of Britain & Europe. Collins & Co. pp. 50–51. ISBN 9780002199643.
  2. "Speleomantes". IUCN Red List of Threatened Species. Retrieved 2014-09-19.
  3. Sanchíz, Borja; Venczel, Márton (2005). "A fossil plethodontid salamander from the Middle Miocene of Slovakia (Caudata, Plethodontidae)". Amphibia-Reptilia. 26 (3): 408–411. doi:10.1163/156853805774408586. ISSN 0173-5373.
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