Osteocephalus fuscifacies

Osteocephalus fuscifacies is a species of frog in the family Hylidae endemic to Ecuador. It is known from the Napo River drainage at intermediate elevations (250–950 m (820–3,120 ft) asl).[3][4] The specific name fuscifacies is derived from Latin fuscus (=tan) and facies (=face), in reference to the uniform tan-colored loreal region and the lack of a light subocular spot.[2] Common name Napo slender-legged treefrog has been coined for this species.[4]

Osteocephalus fuscifacies

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Osteocephalus
Species:
O. fuscifacies
Binomial name
Osteocephalus fuscifacies
Jungfer, Ron, Seipp, and Almendáriz, 2000[2]

Description

Male Osteocephalus fuscifacies measure 35–44 mm (1.4–1.7 in) and females 52–58 mm (2.0–2.3 in) in snout–vent length.[4] The fingers and the toes are partially webbed. The Dorsum has tan ground color, often with irregular darker tan transverse bars or blotches. The limbs are barred. The venter is light tan with creamy white granules, or completelycreamy white. The throat has some tan spots, sometimes only few and inconspicuous.[2]

Behavior and reproduction

Osteocephalus fuscifacies are nocturnal frogs. Males call from bromeliads typically higher than 7 m (23 ft) above the ground. Apparently, the eggs are laid in bromeliads and these frogs seldon descent to the ground.[4] The arboreal lifestyle of this species makes it difficult to observe.[1][4]

Habitat and conservation

Osteocephalus fuscifacies occurs in tropical montane forests and Napo moist forests[1] at elevations of 250–950 m (820–3,120 ft) above sea level;[4] it has also been recorded from banana plantations.[1] It is threatened by habitat loss caused by agricultural development and logging. It occurs in the Sumaco Napo-Galeras and Yasuni National Parks.[1]

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References
  1. IUCN SSC Amphibian Specialist Group (2019). "Osteocephalus fuscifacies". The IUCN Red List of Threatened Species. IUCN. 2019: e.T55794A98407219.
  2. Jungfer, Karl-Heinz; Ron, Santiago; Seipp, Robert & Almendáriz, Ana (2000). "Two new species of hylid frogs, genus Osteocephalus, from Amazonian Ecuador". Amphibia-Reptilia. 21 (3): 327–340. doi:10.1163/156853800507525.
  3. Frost, Darrel R. (2018). "Osteocephalus fuscifacies Jungfer, Ron, Seipp, and Almendáriz, 2000". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 23 May 2018.
  4. Read, M. & Ron, SR (2011–2016). Ron, S. R.; Yanez-Muñoz, M. H.; Merino-Viteri, A. & Ortiz, D. A. (eds.). "Osteocephalus fuscifacies". AmphibiaWebEcuador. Version 2018.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 23 May 2018.
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