Alcalus sariba

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Alcalus sariba
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ceratobatrachidae
Genus: Alcalus
Species:
A. sariba
Binomial name
Alcalus sariba
(Shelford, 1905)
Synonyms [2]
  • Rana sariba Shelford, 1905
  • Ingerana (Ingerana) sariba (Shelford, 1905)
  • Taylorana sariba (Shelford, 1905)

Alcalus sariba, also known as Saribau eastern frog [1] [2] or Saribau dwarf mountain frog, [3] is a species of frog in the subfamily Alcalinae, family Ceratobatrachidae. It is endemic to Sarawak, Malaysian Borneo, where it is known from a small number of locations, including the eponymous Mount Saribau. [1] [2] It has often been included in Alcalus baluensis (=Ingerana baluensis), but is now considered a distinct species. [1] [2] [3] The two species are similar but Alcalus sariba is larger. [3] [4]

Contents

Description

The holotype is a female measuring 38 mm (1.5 in) in snout–vent length, [4] and the common length for females is 36–38 mm (1.4–1.5 in); the size of the male is unknown. [1] The overall appearance is stocky. The head is relatively big compared to the body. Coloration varies from light to dark brown and includes some darker markings. The adhesive finger discs bear a white cross-bar. [3]

Habitat and conservation

Alcalus sariba occurs along seepage areas close to small streams as well as in leaf litter in primary forest; it does not tolerate habitat disturbance. Breeding biology is unknown but presumably involves direct development (i.e, there is no free-living larval stage [5] ), as in other Alcalus. [1]

Alcalus sariba is considered common and occurs in the Santubong National Park, Kubah National Park, and Matang Wildlife Centre. However, outside protected areas it is threatened by habitat loss caused by logging concessions, small scale subsistence logging, and oil palm plantations. Furthermore, Santubong National Park is facing encroachment from housing and tourism development. [1]

Related Research Articles

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<i>Alcalus</i> Genus of amphibians

Alcalus is a small genus of frogs in the family Ceratobatrachidae. It is the only member of the subfamily Alcalinae. Its sister taxon is Ceratobatrachinae. Common name Alcala's dwarf mountain frogs has been proposed for the genus. They are found in Palawan Island, Borneo, and the Malay Peninsula. They prefer semi-aquatic microhabitats.

Alcalus rajae, sometimes known as king dwarf mountain frog, is a species of frog in the family Ceratobatrachidae, subfamily Alcalinae. It is endemic to Kalimantan, Borneo (Indonesia), and known from its type locality in the Bukit Baka Bukit Raya National Park, as well as the Gunung Penrissen Nature Reserve, both in the West Kalimantan province, and from the Meratus Protected Forest in the South Kalimantan province. The specific name rajae refers to the type locality: Bukit Raya is the highest mountain in Kalimantan, getting its name from the Indonesian word raya, signifying the majestic size of the peak. It also alludes to the relatively large size of this species relative to its (then) congeners.

References

  1. 1 2 3 4 5 6 7 IUCN SSC Amphibian Specialist Group (2019). "Alcalus sariba". IUCN Red List of Threatened Species . 2019: e.T79934933A95550467. Retrieved 21 June 2020.
  2. 1 2 3 4 Frost, Darrel R. (2020). "Alcalus sariba (Shelford, 1905)". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001 . Retrieved 21 June 2020.
  3. 1 2 3 4 Haas, A.; Das, I. & Hertwig, S.T. (2020). "Alcalus sariba Saribau Dwarf Mountain Frog". Frogs of Borneo. Retrieved 21 June 2020.
  4. 1 2 Inger, R.F. (1966). "The systematics and zoogeography of the amphibia of Borneo". Fieldiana Zoology. 52: 1–402. doi: 10.5962/bhl.title.3147 .
  5. ↑ Vitt, Laurie J. & Caldwell, Janalee P. (2014). Herpetology: An Introductory Biology of Amphibians and Reptiles (4th ed.). Academic Press. p. 166.
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