Leptomantis belalongensis

Last updated

Leptomantis belalongensis
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Rhacophoridae
Genus: Leptomantis
Species:
L. belalongensis
Binomial name
Leptomantis belalongensis
Dehling & Grafe, 2008 [2]
Synonyms
  • Rhacophorus belalongensisDehling & Grafe, 2008

Leptomantis belalongensis is a species of frog in the family Rhacophoridae. It is endemic to Brunei and Malaysia. [2] [3] [4] [1]

Contents

Distribution and taxonomy

Leptomantis belalongensis is endemic to the Temburong District of Brunei. It was initially observed in several small tributaries of the Sungai Temburong and Sungai Belalong rivers, in the area of their confluence. It was later also found in Gunung Mulu National Park in Malaysia. The frog's specific name refers to the latter river; the suffix -ensis means "originating in" in Latin. Its closest relatives include Rhacophorus bimaculatus , Rhacophorus catamitus , Rhacophorus gadingensis , and Rhacophorus gauni . [2]

Description

Leptomantis belalongensis is a small, slender frog with a narrow waist. When adult, males measure 38.2 to 30.9 millimeters, and females 34.7 to 25.8 millimeters. The head's width is greater than both its length and the width of the body. The snout is obtuse, with teeth on the upper jawbone, and the canthal ridge is sharp. The loreal region is sloping and oblique, and the nostrils are located closer to the tip of the stout than to the eyes. The irises of the large, protruding eyes are ruby-coloured, diffusing to yellow laterally with a distinct black ring along the margin. The diameter of the faintly visible tympanum equals one-third of that of the eye. [2]

The arms are moderately slender. A characteristic row of small white tubercles can be seen on each forearm. The four fingers are slightly webbed, and their tips are oval and broad, with the disk of the third and the longest finger wider than the tympanum; each tip possesses a circummarginal groove. The legs are slender and fairly long, with the tibiotarsal joint reaching the tip of the vent. A large pointed calcar is present on each heel. The disks of the five, fairly webbed toes, of which the fourth one is the longest, are smaller than those of the fingers. Each digit possesses one to three subarticular tubercles, well developed on the fingers. Several tubercles are present on the hands and the feet, with the biggest one located at the base of the thumb. Other characteristics of the species include the lack of a dermal flap along the forearm, and a weakly expressed or absent supratympanic fold. [2]

The skin on the back, dotted with small tubercles, as well as on the abdomen and the ventral side of the thighs is granular; it is smooth on the chin, the throat and the chest. The dorsum is light brown to grey, almost regularly speckled with small dark brown irregularly shaped spots; on the flanks and the anterior surfaces of the thighs can be seen irregularly shaped sky blue blotches. The venter is white. [2]

Ecology and behaviour

Leptomantis belalongensis can be found on vegetation, next to small, fast-flowing rivulets, usually at one to three meters above the ground; some males, however, were heard calling from as high as ten meters. [2]

The advertisement calls consist of one to three, usually two, short clicks, given at irregular intervals. The eggs are deposited within foam nests, as big as 38.4 mm x 26.9 mm x 9.1 mm and attached to the surface of leaves. The number of eggs laid is small—up to 25, with most of them typically hatching into tadpoles. [2]

This frog is classified as at least concern of extinction because, even though its range is small, it is entirely within two national parks, Ulu Temburong National Park and Gunung Mulu National Park. [1]

Related Research Articles

<span class="mw-page-title-main">Wallace's flying frog</span> Species of amphibian

Wallace's flying frog, also known as the gliding frog or the Abah River flying frog, is a moss frog found at least from the Malay Peninsula into western Indonesia, and is present in Borneo and Sumatra. It is named for the biologist, Alfred R. Wallace, who collected the first known specimen.

<i>Ansonia platysoma</i> Species of amphibian

Ansonia platysoma, also known as the flat-bodied slender toad and Luidan stream toad, is a species of toad in the family Bufonidae. It is endemic to the island of Borneo and known from Sabah and Sarawak, Malaysia, and from Brunei. Its closest relative is Ansonia kelabitensis.

Ansonia torrentis, also known as the Gunung Mulu stream toad and torrent slender toad, is a species of toad in the family Bufonidae. It is endemic to Mount Mulu in Sarawak, Borneo (Malaysia). The specific name torrentis refers to the habitat at its type locality, a stream running down a steep mountainside.

Pelophryne api, also known as Api dwarf toad, is a species of toad in the family Bufonidae. It is endemic to Borneo and known from Gunung Mulu National Park in northern Sarawak and from Simpang Kuda in Bau District, western Sarawak. Its genetic divergence from Pelophryne guentheri is relatively low and these species could be conspecific.

Philautus ingeri is a species of frog in the family Rhacophoridae. It is endemic to northern Borneo and found in Sabah, Sarawak, Brunei, and adjacent northern Kalimantan (Indonesia). Common names Inger's bush frog and Inger's bubble-nest frog have been coined for it. It is named for Robert F. Inger, American zoologist from the Field Museum of Natural History.

Philautus mjobergi is a species of frog in the family Rhacophoridae. It is endemic to northern Borneo and found in Kalimantan (Indonesia) and Sarawak (Malaysia). The specific name mjobergi honours Eric Mjöberg, a Swedish naturalist, ethnographer, and explorer. Common names Murud bubble-nest frog and Mjöberg's bush frog have been coined for it.

<i>Polypedates otilophus</i> Species of amphibian

Polypedates otilophus is a species of frog in the family Rhacophoridae. It is endemic to Borneo where it is widespread and found in Brunei, Indonesia, and Malaysia, typically in the lowlands but sometimes as high as 1,100 m (3,600 ft) above sea level. This species has prominent, sharp ridges behind the eye, above the ear, referred to in its names.

Leptomantis fasciatus is a species of frog in the family Rhacophoridae found in Malaysia, Indonesia, and Brunei. It has been observed as high as 200 meters above sea level..

Leptomantis gauni is a species of frog in the family Rhacophoridae. It is endemic to Borneo and is found in Sabah and central Sarawak (Malaysia), Brunei, and north-eastern Kalimantan (Indonesia). The specific name gauni honours Gaun Sureng, a collector for the Sarawak Museum and a companion to Robert F. Inger on field trips when this species was observed. Common names short-nosed tree frog and Inger's flying frog have been coined for it.

<i>Feihyla kajau</i> Species of frog

Feihyla kajau, also known as the Dring's flying frog, white-eared tree frog, and white-eared jelly-nest frog, is a species of frog in the family Rhacophoridae. It is endemic to Borneo and found in all major jurisdictions of the island Kalimantan (Indonesia), Sabah and Sarawak (Malaysia), and Brunei. The specific name kajau is Berawan for "charming".

<i>Rhacophorus lateralis</i> Species of amphibian

Rhacophorus lateralis is a rhacophorid tree frog endemic to the Western Ghats in South India. It has several common names: small tree frog, Boulenger's tree frog, small gliding frog, and winged gliding frog. After its original description in 1883 by George Albert Boulenger, the frog was rediscovered in Coorg in 2000 and has since been found in many parts of the Western Ghats around southern Karnataka and northern Kerala. Along with R. malabaricus, it is one of the few anuran amphibians in India that constructs its nest above the ground using leaves.

Rhacophorus poecilonotus, also known as the Sumatra flying frog, is a species of frog in the family Rhacophoridae. It is endemic to Sumatra, Indonesia.

Leptomantis rufipes is a species of frog in the family Rhacophoridae. It is endemic to Borneo and known from isolated locations in south-central Sarawak and eastern Sabah and central Kalimantan (Indonesia). Common names Malaysian flying frog and red-legged frog have been coined for this species. The specific name rufipes refers to the red webbing of this frog.

Zhangixalus jarujini is a species of frog in the family Rhacophoridae. It is endemic to north-eastern Thailand and known from the Kalasin, Roi Et, and Ubon Ratchathani Provinces. The specific name jarujini honours Jarujin Nabhitabhata from the National Science Museum of Thailand. Common name Jarujin's treefrog has been coined for it.

<i>Kurixalus berylliniris</i> Species of amphibian

Kurixalus berylliniris is a species of tree frog in the family Rhacophoridae. It is endemic to Taiwan and occurs in the eastern part of the island at moderate elevations. Before its description in 2016, it was confused with Kurixalus eiffingeri. The specific name berylliniris combines the Latin words beryllin and iris, in reference to the green iris of this frog.

Philautus kakipanjang, also known as the western long-legged bush frog and long-legged bush frog, is a species of frog in the family Rhacophoridae. As currently known, it is endemic to Sarawak in the Malaysian part of Borneo and recorded with certainty from two mountains, Gunung Serapi and Gunung Gading. Furthermore, there is an acoustic observation from Gunung Santubong that probably can be assigned to this species. The species is probably more widespread in the mountains of western Sarawak, if not beyond.

Pelophryne saravacensis, also known as Sarawak dwarf toad, is a species of toad in the family Bufonidae. It is endemic to Borneo and only known from Sarawak ; there are records from at least four localities representing three different divisions.

Philautus juliandringi is a species of frog in the family Rhacophoridae. It is endemic to Malaysia, where it has been observed in Gunung Mulu National Park between 700 and 2000 meters above sea level.

Leptomantis gadingensis, the Gunung Gading tree frog or Gading tree frog, is a species of frog in the family Rhacophoridae. It is endemic to Malaysia, where it has been observed between 0 and 150 meters above sea level.

Leptomantis penanorum, commonly known as the Penan flying frog, is a species of frog in the family Rhacophoridae. It is endemic Gunung Mulu National Park in Malaysia. It has been observed at a single site 1,650 m (5,410 ft) above sea level.

References

  1. 1 2 3 IUCN SSC Amphibian Specialist Group (2018). "Belalong Tree Frog: Leptomantis belalongensis". IUCN Red List of Threatened Species . 2018: e.T79128770A123468729. doi: 10.2305/IUCN.UK.2018-2.RLTS.T79128770A123468729.en . Retrieved March 11, 2024.
  2. 1 2 3 4 5 6 7 8 Dehling, J. M.; T. U. Grafe (2008). "A new treefrog of the genus Rhacophorus (Anura: Rhacophoridae) from Brunei Darussalam (Borneo)". Salamandra. 44 (2): 101–112.
  3. Frost, Darrel R. (2016). "Rhacophorus belalongensis Dehling and Grafe, 2008". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 22 March 2016.
  4. "Rhacophorus belalongensis". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2016. Retrieved 22 March 2016.