Julianus
Julianus uruguayus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Tribe: Dendropsophini
Genus: Julianus
Duellman, Marion & Hedges, 2016
Type species
Scinax uruguayus
(Schmidt, 1944)
Species

2 species (see text)

Julianus is a genus of tree frogs in the family Hylidae.[1] They are found in southeastern Brazil, Uruguay, and northeastern Argentina.[2][3] This genus is considered poorly defined and is regarded by most to merely be a synonym of Scinax.[4]

This genus is named after Julián Faivovich, who has contributed a notable amount of knowledge to the study of South American tree frogs.[1] It was created because Scinax uruguayus differed from other Scinax in the larval oral disc morphology.[1] More specifically, the tadpole has two keratinized and pigmented plates on the lower jaw sheath, along with the posterior marginal papillae being larger than the papillae on the lateral margins.[5] The species Julianus pinimus was later added to this genus due to having similar features.

However, other papers claim that these frogs are not distinct enough to be grouped into an entirely different genus and should be readded to Scinax. This is because many of the characteristics used to define this genus are shared by other members of Scinax as well.[4][6]

Species

There are currently two species in Julianus:[1]

J. uruguayus is known from Treinta y Tres, Cerro Largo, and Tacuarembó in Uruguay, along with Santa Catarina, Brazil, and Corrientes, Argentina.[2] It may also occur in parts of Paraguay, but this is unconfirmed. J. pinimus is only known from a single locality in Minas Gerais, Brazil.[3]

References

  1. 1 2 3 4 Duellman; et al. (19 April 2016). "Phylogenetics, classification, and biogeography of the treefrogs (Amphibia: Anura: Arboranae)" (PDF). Zootaxa. 4104 (1): 1–109. doi:10.11646/zootaxa.4104.1.1. PMID 27394762 – via The Center for North American Herpetology.
  2. 1 2 "Scinax uruguayus (Schmidt, 1944)". Amphibian Species of the World 6.1, an Online Reference. Retrieved 16 February 2022.
  3. 1 2 "Scinax pinimus (Bokermann and Sazima, 1973)". Amphibian Species of the World 6.1, an Online Reference. Retrieved 16 February 2022.
  4. 1 2 Baldo; et al. (25 September 2019). "A review of the elusive bicolored iris Snouted Treefrogs (Anura: Hylidae:Scinax uruguayus group)". PLOS ONE. 14 (9): e0222131. Bibcode:2019PLoSO..1422131B. doi:10.1371/journal.pone.0222131. PMC 6760762. PMID 31553727.
  5. ↑ Faivovich; et al. (24 June 2005). "Systematic review of the frog family Hylidae, with special reference to Hylinae: phylogenetic analysis and taxonomic revision" (PDF). Bulletin of the American Museum of Natural History. 294: 1. doi:10.1206/0003-0090(2005)294[0001:SROTFF]2.0.CO;2. S2CID 83925199 – via AMNH Library Digital Repository.
  6. ↑ Faivovich; et al. (23 April 2018). "On the Monophyly and Relationships of Several Genera of Hylini (Anura: Hylinae), with Comments on Recent Taxonomic Changes in Hylids". South American Journal of Herpetology. 13 (1): 1–32. doi:10.2994/SAJH-D-17-00115.1. hdl:11336/94370. S2CID 90074090 – via Bienvenido al Repositorio Institucional del CONICET.
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