Zhangixalus jarujini

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Zhangixalus jarujini
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Rhacophoridae
Genus: Zhangixalus
Species:
Z. jarujini
Binomial name
Zhangixalus jarujini
(Matsui  [ fr ] and Panha, 2006) [2]
Synonyms
  • Rhacophorus jarujiniMatsui and Panha, 2006

Zhangixalus jarujini is a species of frog in the family Rhacophoridae. [3] It is endemic to north-eastern Thailand and known from the Kalasin, Roi Et, and Ubon Ratchathani Provinces. [1] [4] The specific name jarujini honours Jarujin Nabhitabhata from the National Science Museum of Thailand. [2] Common name Jarujin's treefrog has been coined for it. [5]

Contents

Description

Adult males measure 34–40 mm (1.3–1.6 in) and adult females 42–46 mm (1.7–1.8 in) in snout–vent length. The snout is rounded dorsally and angular in profile. The tympanum is visible. Both fingers and toes are broadly webbed and have discs, the toe discs being smaller than those on the fingers. The dorsum is light brown. There is a narrow dark band running between the eyes. The back has irregular dark crossbands. The underside is patternless, anteriorly cream and posteriorly yellow. The ventral surfaces of hands, feet, and thighs are light orange. The limbs have dark crossbars. The webbing is reddish brown. The iris is yellow. Males have median subgular vocal sac. [2]

The tadpole has a striking colouration: the body is yellowish grey with gold lateral stripe, and the tail is light yellow in its anterior part and bright red further back, with the whole tail covered with irregular black spots. The largest specimen (Gosner stage 38) measured 19 mm (0.75 in) in body length. [4]

Habitat and conservation

Zhangixalus jarujini occurs in a variety of habitats within dipterocarp and hilly evergreen forests at elevations of 230–500 m (750–1,640 ft) above sea level. Individuals have been found on the ground or in vegetation (from near the ground to up to 2 metres above the ground) near small bodies of water including a rain pool in igneous rock, a seep running over solid rock, a rocky stream, small ponds, and a dried rocky stream bed with small pools. Tadpoles are known from a small stream pool with silt and leaf-litter bottom. [1] [4]

The known populations occur in protected areas, including Phu Sri Tan Wildlife Sanctuary, Phu Pha Namtip Non-hunting Area, and Phu Jong-Na Yoi National Park. These populations might not face any threats. However, outside the protected areas much of the natural vegetation has been lost, and Zhangixalus jarujini has likely lost much of its original habitat. [1]

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References

  1. 1 2 3 4 IUCN SSC Amphibian Specialist Group (2021). "Zhangixalus jarujini". IUCN Red List of Threatened Species . 2021: e.T136139A117046021. Retrieved 20 November 2021.
  2. 1 2 3 Matsui, Masafumi; Panha, Somsak (2006). "A new species of Rhacophorus from eastern Thailand (Anura: Rhacophoridae)" (PDF). Zoological Science. 23 (5): 477–481. doi:10.2108/zsj.23.477. hdl: 2433/65034 .
  3. ↑ Frost, Darrel R. (2017). "Rhacophorus jarujini Matsui and Panha, 2006". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 25 November 2017.
  4. 1 2 3 Stuart, Bryan L.; Chuaynkern, Yodchaiy; Chan-ard, Tanya; Inger, Robert F. (2006). "Three species of frogs and a new tadpole from eastern Thailand". Fieldiana Zoology. 111: 1–19. doi:10.3158/0015-0754(2006)187[1:TNSOFA]2.0.CO;2.
  5. ↑ Species of Thailand (2017). "Jarujin's treefrog". Thai National Parks. Retrieved 25 November 2017.
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