Rhacodactylus

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Rhacodactylus
Rhacodactylus leachianus.jpg
Rhacodactylus leachianus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Family: Diplodactylidae
Genus: Rhacodactylus
Fitzinger, 1843 [1]
Species

See text.

Rhacodactylus is a genus of medium to large geckos of the family Diplodactylidae. All species in this genus are found on the islands that make up New Caledonia.

Contents

Genus characteristics include long limbs and toes with well-developed lamellae. Some webbing occurs on the hind limbs and toes. Rhacodactylus possess prehensile tails which also have lamellae to assist in climbing. These are for the most part arboreal geckos. Rhacodactylus are nocturnal geckos.

The species are egg layers with the exception of Rhacodactylus trachyrhynchus and R. trachycephalus which gives live birth, a characteristic only otherwise found in New Zealand geckos. They also feed on lizards, more so than any of the family. Rhacodactylus geckos are sexually dimorphic, with the males possessing larger preanal pores than the females as well as a distinct hemipenis pocket.

Males tend to be stockier than females with the exception of R. auriculatus in which species the males are much slimmer than the females.

Classification

A revision of the giant geckos of New Caldonia found weak support for inclusion of some taxa allied to this genus, and these have been assigned to new combinations: [2]

Captivity

The species are regarded as charismatic and popular with herpetologists. Details of the behaviour of these geckos in captivity, contrasted with a paucity of field observations, has produced extensive literature on the genus. [2]

Related Research Articles

<i>Bavayia</i> Genus of lizards

Bavayia is a genus of lizards in the family Diplodactylidae. Species in the genus Bavayia are also known commonly as New Caledonian geckos or bavayias. The genus is native to the remote New Caledonia and Loyalty Islands. The 41 species are moderately small to medium-sized geckos, and are distinguished from other genera by their tail length and the shape of their digits.

<i>Eurydactylodes</i> Genus of lizards

Eurydactylodes is a small genus of geckos commonly referred to as chameleon geckos from the subfamily Diplodactylidae, endemic to New Caledonia and few adjacent islands. Within the Diplodactylidae, Eurydactylodes resides in the Carphodactylini tribe, and consists of four species. All species share similar morphology as well as lifestyle and habits. The first of the Eurydactylodes species to be classified, E. vieillardi, was discovered in 1869.

Caledoniscincus is a genus of lizards in the family Scincidae (skinks). The genus is endemic to New Caledonia.

<span class="mw-page-title-main">Gargoyle gecko</span> Species of lizard

The gargoyle gecko, knob-headed giant gecko, New Caledonia bumpy gecko, or New Caledonian bumpy gecko is a species of gecko found only on the southern end of the island of New Caledonia. Its habitat is threatened by deforestation on the island. This species of gecko is the smallest of the six recognized species in its genus where they often reach about 125 mm in size. This gecko, along with several other Rhacodactylus species are being considered for protective measures by CITES, which would put restrictions on their exportation. This gecko was first described by Bavay in 1869.

<span class="mw-page-title-main">Crested gecko</span> Species of lizard

The crested gecko or eyelash gecko is a species of gecko native to southern New Caledonia (France). In 1866, the crested gecko was described by French zoologist Alphonse Guichenot. This species was thought to be extinct until it was rediscovered in 1994 during an expedition led by Robert Seipp. Along with several other New Caledonian gecko species, it is being considered for protected status by the Convention on the International Trade in Endangered Species of Wild Flora and Fauna.

<i>Rhacodactylus leachianus</i> Species of lizard

Rhacodactylus leachianus, commonly known as the New Caledonian giant gecko,Leach's giant gecko,Leachianus Gecko, or simply Leachie, is the largest living species of gecko and a member of the family Diplodactylidae. It is native to most of New Caledonia.

<i>Mniarogekko chahoua</i> Species of lizard

Mniarogekko chahoua is commonly known as the mossy New Caledonian gecko, short-snouted New Caledonian gecko, Bavay's giant gecko, or mossy prehensile-tailed gecko. It is an arboreal gecko found natively on the southern portion of the island of New Caledonia and on the outlying islands of Île des Pins.

<i>Correlophus sarasinorum</i> Species of lizard

Correlophus sarasinorum, also called commonly Roux's giant gecko, Sarasins' giant gecko, Sarasin's [sic] giant gecko (incorrectly), and the suras gecko, is a species of lizard in the family Diplodactylidae. The species is native to the southern portions of the outlying New Caledonian island of Grande Terre.

The rough-snouted giant gecko, also known as the greater rough-snouted gecko or tough-snouted gecko, is a species of gecko found in New Caledonia.

<i>Gigarcanum</i> Extinct species of lizard

Gigarcanum delcourti, formerly Hoplodactylus delcourti, is an extinct species of gecko in the family Diplodactylidae. It is the largest known of all geckos, with a snout-to-vent length (SVL) of 37 cm (14.6 in) and an overall length of at least 60 cm (23.6 in). It is only known from a single taxidermied specimen collected in the 19th century that was rediscovered unlabelled in a museum in France. The origin of the specimen was undocumented. While originally suggested to have been from New Zealand and the kawekaweau of Māori oral tradition, DNA evidence from the specimen suggests that it originates from New Caledonia.

Antoine Alphonse Guichenot was a French zoologist who taught, researched, and participated in specimen collecting trips on behalf of the Muséum national d'histoire naturelle (Paris), including an extensive biological survey of Algeria.

<span class="mw-page-title-main">Diplodactylidae</span> Family of lizards

The Diplodactylidae are a family in the suborder Gekkota (geckos), with over 150 species in 25 genera. These geckos occur in Australia, New Zealand, and New Caledonia. Diplodactylids are the most ecologically diverse and widespread family of geckos in both Australia and New Caledonia, and are the only family of geckos found in New Zealand. Three diplodactylid genera have recently been split into multiple new genera.

<i>Bavayia exsuccida</i> Species of lizard

Bavayia exsuccida, also known as the sclerophyll bavayia, is a species of geckos endemic to North Province, New Caledonia. As of 2022, it is known from only one locality, with an extent of occurrence of 8 sq km.

<i>Dierogekko</i> Genus of lizards

Dierogekko is a genus of geckos in the family Diplodactylidae. The genus is endemic to the northwest portion of New Caledonia. They are sometimes known commonly as the striped geckos or the New Caledonian geckos. Dierogekko are small geckos with simple, granular scales and subdued patterning of broad longitudinal stripes or spots. They are similar in overall appearance and habit to closely related geckos in the genera Bavayia and Oedodera, and the type species D. validiclavis was once referred to Bavayia.

Dierogekko thomaswhitei, also known commonly as White's nimble gecko and the Taom striped gecko, is a species of lizard in the family Diplodactylidae. The species is endemic to New Caledonia.

Paniegekko is a monotypic genus of geckos in the family Diplodactylidae, containing the species Paniegekko madjo. It is endemic to humid montane forests on Mont Ignambi and Mont Panié in the Panié massif of New Caledonia. It was once considered a species of Bavayia, a similar genus of arboreal geckos. Paniegekko madjo is endangered, owing to predation by introduced rodents and cats combined with habitat degradation by wildfires and introduced pigs and deer. It has not been observed since 1998.

<i>Rhacodactylus trachycephalus</i> Species of lizard

Rhacodactylus trachycephalus, commonly known as the lesser rough-snouted giant gecko, dwarf rough-snouted giant gecko, or tough-snouted giant gecko, is a species of gecko endemic to two small areas of islands in New Caledonia. Its body grows to around 10 centimetres (3.9 in) and has a mosaic pattern with a variety of colors. Rhacodactylus trachyrhynchus is a closely related species, but R. trachycephalus is smaller and has a number of other noticeable differences. R. trachycephalus is viviparous, giving birth to only one or two young a year. Its restricted humid forest habitat is vulnerable due to multiple threats. As a result of habitat reduction, low reproduction rate and small population, it is one of the rarest geckos in the world.

<span class="mw-page-title-main">Pygopodoidea</span> Superfamily of lizards

Pygopodoidea is a gecko superfamily and the only taxon in the gekkotan subclade Pygopodomorpha. The clade includes three Australasian families: Diplodactylidae, Carphodactylidae, and Pygopodidae. Traditional gekkotan systematics had considered Diplodactylidae and Carphodactylidae as subfamilies of the family Gekkonidae, but recent molecular work have placed Pygopodidae within Gekkonidae making it paraphyletic. These analyses have shown support of Pygopodidae and Carphodactylidae being sister taxa, with Diplodactylidae occupying a basal position in Pygopodoidea.

Bavayia astrongatti is a species of geckos endemic to New Caledonia.

Bavayia whitakeri is a species of geckos endemic to New Caledonia.

References

  1. ITIS (Integrated Taxonomic Information System). www.itis.gov.
  2. 1 2 Bauer, A; Jackman, Todd; Sadlier, Ross; H Whitaker, Anthony (31 July 2012). "Revision of the giant geckos of New Caledonia (Reptilia: Diplodactylidae: Rhacodactylus)". Zootaxa. 3404: 1. doi:10.11646/zootaxa.3404.1.1.

Literature