Lilford's wall lizard Temporal range: Pleistocene – Recent [1] | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Squamata |
Family: | Lacertidae |
Genus: | Podarcis |
Species: | P. lilfordi |
Binomial name | |
Podarcis lilfordi (Günther, 1874) | |
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Geographic range | |
Synonyms [4] | |
Lilford's wall lizard (Podarcis lilfordi) is a species of lizard in the family Lacertidae. The species is endemic to the Gymnesian Islands, the easternmost of the Balearic Islands, Spain. There are 27 subspecies that are recognized as being valid.
Its natural habitats are temperate Mediterranean-type shrubby vegetation, rocky areas, and rocky shores. Originally distributed throughout the Gymnesians, the introduction of alien species which started with the Romans has confined the species to the uninhabited islets around the major islands, on almost each of which a local subspecies has evolved. It is threatened by habitat loss.
P. lilfordi is named in honour of Thomas Powys, 4th Baron Lilford, a British ornithologist who studied the fauna of the Balearics. [5]
Lilford's wall lizard grows to a maximum snout-to-vent length (SVL) of 8 cm (3 in), but adults are usually a little smaller than this. The tail is about 1.8 times as long as the body. It is a robust streamlined lizard with a short head and rounded body with smooth, unkeeled scales. The dorsal surface is usually greenish or brownish but varies much between different island subpopulations. There is usually a pale dorso-lateral stripe and there may be several dark streaks or three dark lines running along the spine. The flanks may be slightly reticulated and the underside is white, cream or pinkish. The throat may be blotched with darker colour. Juveniles sometimes have a blue tail. [6]
Lilford's wall lizard is native to the Gymnesian Islands, including Mallorca, Menorca, the Cabrera Archipelago to the south of Mallorca, and the neighbouring rocky islets, which united into a single landmass during the colder periods of the Pleistocene. In historical times it has been extirpated from the two large islands and is now only present on the islets. It was never found on the Pityusic Islands, west of the Gymnesian Islands.
P. lilfordi is found at low altitudes. [2] It is a mainly ground-dwelling species and largely inhabits rocky areas and scrubland, although it is found in woodland on Cabrera. [6]
Lilford's wall lizard is a relatively tame lizard and easy to approach. It mainly feeds on insects, spiders and other arthropods, snails and some vegetable matter. This includes flowers and fruits, nectar and pollen. Some plants endemic to the Gymnesian Islands depend on this lizard for pollination. [6] Other plants known to be pollinated by it include the mastic tree ( Pistacia lentiscus ), rock samphire ( Crithmum maritimum ), wild leek ( Allium ampeloprasum ), clustered carline thistle ( Carlina corymbosa ) and the sea daffodil ( Pancratium maritimum ). [7] It is opportunistic around birds' nests in the use of scraps of food that have been regurgitated by gulls for their chicks. It also sometimes moves to the vicinity of nests of the Eleonora's falcon (Falco eleonorae) and feeds on the remains of its prey and the flies that accumulate around the nesting site. It is sometimes cannibalistic, eating juveniles and the tails of other lizards of its own species. [6]
P. lilfordi is oviparous. [2] [4] Breeding takes place in the summer, and females may lay up to three clutches of one to four eggs with an average mass of 0.63 g, large for a lizard of this size. The eggs hatch in about eight weeks, and the emerging young measure about 3 to 3.5 cm (1.2 to 1.4 in) from snout to vent. [8]
The population of this lizard seems to be in decline. It was at one time very numerous on Menorca and Mallorca but is no longer found on either. This extirpation may have been caused by the proliferation of cats and by other introduced predators, possibly the false smooth snake (Macroprotodon cucullatus) and the weasel (Mustela nivalis). Its total area of occupancy on all the small islands on which it is now present is less than 500 km2 (193.1 sq mi); so the IUCN lists it as being "Endangered". [2]
There are 27 recognized subspecies many of which are found on only a single island: [9]
Nota bene : A trinomial authority in parentheses indicates that the subspecies was originally described in genus other than Podarcis.
Menorca or Minorca is one of the Balearic Islands located in the Mediterranean Sea belonging to Spain. Its name derives from its size, contrasting it with nearby Mallorca. Its capital is Mahón, situated on the island's eastern end, although Menorca is not a province and forms a political union with the other islands in the archipelago. Ciutadella and Mahón are the main ports and largest towns. The port of Mahón is the second biggest natural port in the world.
Lacerta is a genus of lizards of the family Lacertidae.
Podarcis is a genus of lizards, known colloquially as wall lizards, in the family Lacertidae. Its members look very similar to lizards of the genus Lacerta, to which they were considered to belong until the 1970s. While similar externally and ecologically, Podarcis form a distinct group differing from Lacerta by the construction of the skull and the hemipenis, and by the processes of the caudal vertebrae. Wall lizards are native to Europe and northern Africa, and most species are restricted to the Mediterranean region. Wall lizards diversified and hybridized during the Messinian salinity crisis. The Italian wall lizard and the common wall lizard have been introduced to North America, where they have become intermediate hosts for some Acuariidae larvae.
The Pityusic Islands, often referenced simply as the Pityuses, or commonly but informally as the Pine Islands, is the name given collectively to the Balearic Islands of Ibiza, Formentera, S'Espalmador and other small islets in the Mediterranean Sea.
Erhard's wall lizard, also commonly called the Aegean wall lizard, is a species of lizard in the family Lacertidae. The species is endemic to Southeast Europe.
The Ratas Island lizard, Podarcis lilfordi rodriquezi, is an extinct subspecies of Lilford's wall lizard that once lived on Ratas Island, a tiny, rocky island in the bay of Mahón, Menorca (Spain). But Ratas island, which was its habitat, was destroyed when Port Mahon was rebuilt. The last sign of this subspecies was in 1950 and is presumed extinct. Four specimens of this European lizard are conserved in museum collections.
Boettger's lizard is a species of wall lizard in the family Lacertidae. The species is endemic to the Canary Islands. There are two recognized subspecies.
Dragonera, also called Sa Dragonera, is an uninhabited islet in the Balearic Islands, Spain, located just off the west coast of Majorca. It is currently a natural park, Parc Natural Sa Dragonera.
Lorenz Müller was a German herpetologist.
Iberolacerta martinezricai, Martinez-Rica's rock lizard, is a species of lizard in the family Lacertidae.
Bocage's wall lizard is a species of lizard in the family Lacertidae. The species is endemic to the Iberian Peninsula. Its natural habitats are temperate forests, temperate shrubland, Mediterranean-type shrubby vegetation, sandy shores, rural gardens, and urban areas. The IUCN does not consider it to be threatened.
Podarcis carbonelli, commonly known as Carbonell's wall lizard, is a species of lizard in the family Lacertidae. The species is native to Portugal and Spain.
The filfola lizard or Maltese wall lizard is a species of lizard in the family Lacertidae. It is found in Italy and in the island group of Malta. Its natural habitats are Mediterranean-type shrubby vegetation, rocky areas, rocky shores, arable land, pastureland, and rural gardens.
The Ibiza wall lizard is a species of lizard in the family Lacertidae. It is most closely associated with the island of Eivissa, or Ibiza, in the Balearic Islands, but has become naturalized in parts of Spain.
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Illa de l'Aire in an islet on the southeast coast of Menorca, in the Balearic Islands, close to Punta Prima.
L'Illa del Rei, also called Hospital Island in English, is a small island in the middle of the main navigable entry channel to Mahon on the northeastern side of Menorca in the Mediterranean Sea.
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: CS1 maint: DOI inactive as of November 2024 (link)