Zhangixalus
Zhangixalus arvalis from Taiwan
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Rhacophoridae
Subfamily: Rhacophorinae
Genus: Zhangixalus
Li, Jiang, Ren, and Jiang, 2019[1]
Type species
Polypedates dugritei
David, 1872
Species

40 species (see text)

Zhangixalus is a genus of frogs in the subfamily Rhacophorinae, family Rhacophoridae.[2][3] They are collectively known as Zhang's treefrogs.[1][2] They occur in the Eastern Himalayas, southern China, Taiwan, Japan, and southeast Asia.[2]

Etymology

The name of the genus honors Zhang Ya-Ping from the Chinese Academy of Sciences, in recognition to his contributions to biodiversity and evolution research in China, in combination with ixalus, a common generic root for treefrogs.[1]

Taxonomy

Zhangixalus was erected in a 2019 revision of the then very large genus Rhacophorus (92 species) that was split in three lineages: Rhacophorus sensu stricto (then 39 species; as of November 2021, 43 species[4]), resurrected Leptomantis (then 14 species; as of November 2021, 13 species[4]), and Zhangixalus (then 37 species; as of November 2021, 40 species[4]). The split was based on molecular data, but was supported by morphological characteristics and differences in geographic distribution. Rhacophorus is the sister taxon to the clade formed by Zhangixalus and Leptomantis.[1]

Description

Zhangixalus are relatively large frogs, ranging between 30 and 120 mm (1.2 and 4.7 in) in snout–vent length, but typically more than 50 mm (2.0 in). The snout is rounded. The terminal phalanges of fingers and toes are Y-shaped. Dorsal skin is smooth or scattered with small tubercles. Most species have green dorsal coloration. Reproduction involves white foam nests produced by breeding pairs.[1]

Zhangixalus, as delimited by Jiang and colleagues, includes a deeply divergent clade containing Z. achantharrhena, Z. dulitensis, and Z. prominanus. They differ from other Zhangixalus by possessing dermal folds along limbs and tarsal projections. The placement of these species is tentative, pending further study.[1]

Zhangixalus are mostly larger than their closest relative, Leptomantis, and have generally green dorsal coloration, instead of light tan or reddish brown. They differ from Rhacophorus sensu stricto by lacking dermal folds along limbs and tarsal projections.[1]

Foam nest hanging from a tree branch
Foam nest of Zhangixalus arboreus from Japan.

Species

There are 41 recognized species:[2]

The AmphibiaWeb recognizes the same species except Zhangixalus amamiensis, which is treated as being part of Zhangixalus viridis.[3]

References

  1. 1 2 3 4 5 6 7 Jiang, Dechun; Jiang, Ke; Ren, Jinlong; Wu, Jun & Li, Jiatang (2019). "Resurrection of the genus Leptomantis, with description of a new genus to the family Rhacophoridae (Amphibia: Anura)". Asian Herpetological Research. 10 (1): 1–12. doi:10.16373/j.cnki.ahr.180058. ProQuest 2388308652.
  2. 1 2 3 4 Frost, Darrel R. (2021). "Zhangixalus Li, Jiang, Ren, and Jiang, 2019". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001. Retrieved 16 November 2021.
  3. 1 2 "Rhacophoridae". AmphibiaWeb. University of California, Berkeley. 2021. Retrieved 16 November 2021.
  4. 1 2 3 Frost, Darrel R. (2021). "Rhacophorinae Hoffman, 1932 (1858)". Amphibian Species of the World: An Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001. Retrieved 16 November 2021.
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