Opisthothylax

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Opisthothylax
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hyperoliidae
Genus: Opisthothylax
Perret  [ fr ], 1966
Species:
O. immaculatus
Binomial name
Opisthothylax immaculatus
(Boulenger, 1903)
Synonyms [2]
  • Megalixalus immaculatusBoulenger, 1903

Opisthothylax is a monotypic frog genus in the family Hyperoliidae. The sole species is Opisthothylax immaculatus, also known as the gray-eyed frog . [3] [4] It is found in southern Nigeria, Cameroon, Equatorial Guinea, Gabon, western Republic of Congo, and southwestern Democratic Republic of the Congo. [2] It might also be present in the Cabinda Enclave of Angola and in the Central African Republic. [1]

Contents

Description

Adult males measure 30–33 mm (1.2–1.3 in) in snout–vent length. The dorsal colouration is reddish-brown or orange to yellowish. In most individuals, there are two small, dark occipital spots. The ventral surfaces of the body and limbs are light yellow. The pupil is vertical and the iris light golden yellow. There is no visible tympanum. The skin is warty. The toe discs are expanded. Males have a large gular flap and a non-distensible vocal sac. [5]

Habitat and conservation

Its natural habitats are closed-canopy, undisturbed rainforests. [1] It is an arboreal frog found high up in the foliage. It lays its eggs in a foam nest attached to leaves above slow-flowing streams—the only species to do so within the family Hyperoliidae. [5] The tadpoles drop to the water after hatching.

Opisthothylax immaculatus is a widespread species, but its population density is low. Habitat loss is probably a threat to it. It occurs in the Korup National Park in Cameroon, probably also in other protected areas. [1]

Related Research Articles

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<i>Phlyctimantis leonardi</i> Species of frog

Phlyctimantis leonardi is a species of frog in the family Hyperoliidae. It is found in west-central Africa in eastern Cameroon, Equatorial Guinea, Gabon, Republic of the Congo, and western Democratic Republic of the Congo. It is presumed to occur in the Cabinda enclave of Angola. It might be the same species as Phlyctimantis verrucosus found further east, showing clinal variation. Frogs are medium to large, with smooth skin.

References

  1. 1 2 3 4 IUCN SSC Amphibian Specialist Group (2013). "Opisthothylax immaculatus". IUCN Red List of Threatened Species . 2013: e.T56290A18364947. doi: 10.2305/IUCN.UK.2013-2.RLTS.T56290A18364947.en . Retrieved 17 November 2021.
  2. 1 2 Frost, Darrel R. (2017). "Opisthothylax immaculatus (Boulenger, 1903)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 8 March 2017.
  3. Frost, Darrel R. (2017). "Opisthothylax Perret, 1966". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 8 March 2017.
  4. "Hyperoliidae". AmphibiaWeb. University of California, Berkeley. 2017. Retrieved 8 March 2017.
  5. 1 2 "Opisthothylax immaculatus". AmphibiaWeb. University of California, Berkeley. 2008. Retrieved 8 March 2017.