Sphaenorhynchus lacteus

Sphaenorhynchus lacteus, the Orinoco lime treefrog or greater hatchet-faced treefrog, is a species of frog in the family Hylidae.[2][3] It is a widely distributed species found in the Orinoco and Amazon basins in Venezuela, the Guianas (Guyana, Suriname, French Guiana), Colombia, Brazil, Ecuador, Peru, and Bolivia. It also occurs in Trinidad and Tobago.[1][2][3][4][5]

Sphaenorhynchus lacteus

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Sphaenorhynchus
Species:
S. lacteus
Binomial name
Sphaenorhynchus lacteus
(Daudin, 1800)
Synonyms[2]

Hyla lactea Daudin, 1800
Hyla lactea Daudin, 1801
Rana aurantia Shaw, 1802
Hyla aurantiaca Daudin, 1802
Sphaenorhynchus eurhostus Rivero, 1969

Description

Adult males measure 26–42 mm (1.0–1.7 in) and females 38–46 mm (1.5–1.8 in) in snout–vent length.[3] The snout is pointed in dorsal view and angles sharply back when viewed laterally.[3][6] The tympanum is visible.[3] The fingers are one-half to two-thirds webbed whereas the toes are fully webbed.[3][6] The dorsum is bright green with dark brown canthal stripe. The venter and outer margins of the limbs are white whereas the ventral surfaces of the limbs are bluish green.[3][6] The iris is pale creamy bronze.[6]

Habitat and conservation

Sphaenorhynchus lacteus is a semi-aquatic frog found in flooded plains, floating meadows, ponds, and large lagoons in forest clearings, at forest edges, and in savanna. It has also been recorded in leaf litter in tropical rainforest, in seasonally flooded agricultural land, and flooded roadside ditches. It occurs at elevations to 300 m (980 ft) above sea level. Males call from floating vegetation and emergent grasses at night.[1][6]

Sphaenorhynchus lacteus is a common species through most of its range. It can locally be threatened by habitat loss and pollution. Its range includes several protected areas.[1] It can be found in the pet trade.[3]

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References
  1. La Marca, E.; Azevedo-Ramos, C.; Coloma, L.A.; Ron, S.; Hardy, J. (2004). "Sphaenorhynchus lacteus". IUCN Red List of Threatened Species. 2004: e.T56015A11409132. doi:10.2305/IUCN.UK.2010-2.RLTS.T56015A11409132.en.
  2. Frost, Darrel R. (2017). "Sphaenorhynchus lacteus (Daudin, 1800)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 10 June 2017.
  3. "Sphaenorhynchus lacteus". AmphibiaWeb. University of California, Berkeley. 2013. Retrieved 10 June 2017.
  4. Ortiz, D. A.; Read, M.; Ron, S. (2013–2015). "Sphaenorhynchus dorisae Daudin (1800)". Ron, S. R., Guayasamin, J. M., Yanez-Muñoz, M. H., Merino-Viteri, A., Ortiz, D. A. and Nicolalde, D. A. 2016. AmphibiaWebEcuador. Version 2016.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 10 June 2017.
  5. Acosta Galvis, A. R.; D. Cuentas (2017). "Sphaenorhynchus lacteus (Daudin, 1800)". Lista de los Anfibios de Colombia V.07.2017.0. www.batrachia.com. Retrieved 10 June 2017.
  6. Rodríguez, Lily O.; Duellman, William E. (1994). "Guide to the frogs of the Iquitos Region, Amazonian Perú". Special Publication, Natural History Museum, University of Kansas. Asociación de Ecología y Conservación, Amazon Center for Environmental Education and Research and Natural History Museum, University of Kansas. 22: 1–80.
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