Sarcohyla cembra

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Sarcohyla cembra
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Sarcohyla
Species:
S. cembra
Binomial name
Sarcohyla cembra
(Caldwell, 1974)
Synonyms
  • Hyla cembraCaldwell, 1974 [2]
  • Plectrohyla cembra(Caldwell, 1974)

Sarcohyla cembra, also known as the Southern Sierra Madre treefrog, is a species of frog in the family Hylidae. [3] It is endemic to Mexico. Until recently, it was only known from two male specimens: one from its type locality on the Pacific slopes of the Sierra Madre del Sur mountains, Pochutla District, Oaxaca, and another one from Sierra de Yucuyacua south-east of Llano de Guadalupe, in north-west Oaxaca. [1] [3] [4] The two locations are about 172 km (107 mi) apart. [4] After having not been seen after 1993, it was feared that the species might be extinct. [1] However, the species was rediscovered in field surveys in 2011–2012, extending its range with a new locality about 10 km north of the type locality. [5]

Contents

Etymology

The specific name cembra is Latin for "timber" and refers to the pine-oak forest this species inhabits. [2]

Taxonomy

It was initially thought that the female specimen that became the holotype of Sarcohyla miahuatlanensis could be a female Sarcohyla cembra, but it was eventually identified as a new, distinct species. Nevertheless, the two species are morphologically similar. [6]

Description

The holotype is a male that measures 37 or 36.1 mm (1.46 or 1.42 in) in snout–vent length, depending on the source. [2] [4] The second specimen, also a male, measures 40.4 mm (1.59 in) SVL. [4] The body is moderately robust. The tympanum is small and indistinct. Skin is smooth on the dorsum and limbs, weakly granular on venter, chin, and ventral surfaces of thighs. The fingers are without webbing whereas the toes are moderately webbed. The dorsum was bright greenish yellow upon capture, changing to dull green. There is brown and green reticulations along sides. The throat and chest are white. The ventral sides of limbs and belly are pinkish tan. The iris is brownish yellow. [2]

Male advertisement call is a short "wrack", often followed by a series of low "chuckles". Tadpoles found at the type locality, provisionally allocated to this species, measured up to 51 mm (2.0 in) in total length. [2]

Habitat and conservation

The natural habitats of this species are pine-oak forest. [1] The holotype was found calling at night from under a piece of bark on a large log in a small stream at 2,160 m (7,090 ft) above sea level. [2] The second specimen was found inside an arboreal bromeliad on a fallen oak tree at 2,850 m (9,350 ft) asl. [4]

This species was only known from two specimens collected in 1969 and 1993, [1] until it was again found in 2011–2012. [5] Its habitat, the pine-oak forests, are under threat caused by logging and agriculture. Also chytridiomycosis might have impacted the species. [1]

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<i>Sarcohyla labeculata</i> Species of frog

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Sarcohyla miahuatlanensis, or the Sierra Miahuatlan spikethumb frog, is a species of frog in the family Hylidae. It is endemic to Mexico and only known from its type locality near Candelaria Loxicha on the Sierra de Miahuatlán in Oaxaca.

<i>Sarcohyla</i> Genus of amphibians

Sarcohyla is a genus of frogs in the family Hylidae. It is endemic to Mexico and is found in the montane parts of the country between Durango in the north and Guerrero in the south. These frogs typically occur in pristine habitats along streams in pine-oak woodland at elevations between 1,500 and 3,100 m above sea level. The generic name is derived from the Greek sarkodes meaning "fleshy" in combination with Hylas and refers to the thick, glandular skin characteristic of most of the species in the genus.

<i>Rheohyla</i> Genus of amphibians

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References

  1. 1 2 3 4 5 6 IUCN SSC Amphibian Specialist Group (2020). "Sarcohyla cembra". IUCN Red List of Threatened Species . 2020: e.T55439A53953718. doi: 10.2305/IUCN.UK.2020-3.RLTS.T55439A53953718.en . Retrieved 17 November 2021.
  2. 1 2 3 4 5 6 Caldwell, J. (1974). "A re-evaluation of the Hyla bistincta species group, with descriptions of three new species (Anura: Hylidae)". Occasional Papers of the Museum of Natural History, the University of Kansas. 28: 1–37. doi: 10.5962/bhl.part.14776 .
  3. 1 2 Frost, Darrel R. (2016). "Sarcohyla cembra (Caldwell, 1974)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 17 December 2016.
  4. 1 2 3 4 5 Mendelson, Joseph R. III; Canseco-Marquez, Luis (2002). "Rediscovery of the rare treefrog, Hyla cembra Caldwell, in Oaxaca, Mexico". Southwestern Naturalist. 47 (3): 459–461. doi:10.2307/3672505. JSTOR   3672505.
  5. 1 2 Caviedes-Solis, Itzue W.; Vázquez-Vega, Luis F.; Solano-Zavaleta, Israel; Pérez-Ramos, Edmundo; Rovito, Sean M.; Devitt, Thomas J.; Heimes, Peter; Flores-Villela, Oscar A.; Campbell, Jonathan A.; de Oca, Adrián Nieto Montes (2015). "Everything is not lost: recent records, rediscoveries, and range extensions of Mexican hylid frogs" (PDF). Mesoamerican Herpetology. 2: 230–241.
  6. ↑ Meik, Jesse M.; Smith, Eric N.; Canseco-Márquez, Luis; Campbell, Jonathan A. (2006). "New species of the Plectrohyla bistincta group (Hylidae: Hylinae: Hylini) from Oaxaca, Mexico". Journal of Herpetology. 40 (3): 304–309. doi:10.1670/0022-1511(2006)40[304:nsotpb]2.0.co;2. JSTOR   4092998.
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