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Description

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A small Alexteroon (24-28 mm) from the forest in southern Cameroun, western Gabon and Rep. Congo. Dorsum greyish to brown with irregular transverse darker bands. Ventral part of body and head white, of limbs translucent greenish. Fringes only developed on hand and 4th finger, and on foot and 5th toe.

Reference

Largen, M. J. and Dowsett-Lemaire, F. (1991). ''Amphibians (Anura) from the Kouilou River Basin, République du Congo.'' Tauraco Research Report, 4, 145-168.

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Distribution and Habitat

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This species is widespread and abundant in southern Cameroun, where the voice is often heard along rivers, but is very difficult to collect. It is also known from Gabon and Rep. Congo, in the latter country reported by Largen and Dowsett-Lemaire (1991) as Hyperolius tuberculatus.
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Life History, Abundance, Activity, and Special Behaviors

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The voice consists of a double click, more sonorous than the voice of the other Alexteroon. The calling site of the males is very high up, often more than 5 meters high and close to rivers, but the eggs are apparently placed quite low in the vegetation. The tadpoles are similar to those of A. obstetricans. The eggs and small tadpoles are protected by the female.
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Hyperolius hypsiphonus

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Hyperolius hypsiphonus is a species of frog in the family Hyperoliidae.[3][4] It is found in southern Cameroon, Gabon, Equatorial Guinea, the western Republic of the Congo, and northwestern Angola.[3][4] Common name cross-banded egg-guarding frog has been proposed for it.[3][5]

Description

Hyperolius hypsiphonus grow to 28 mm (1.1 in) in snout–vent length. The body is slender while the head is broad with a short snout. The eyes are large. The tympanum is distinct. The finger and toe tips are enlarged into large discs; the webbing is well-developed in both hands and feet. Dorsal skin is granular and has a lichen-like pattern that grayish during the day and dark brown at night. There are numerous black dots and three irregular, black-bordered transverse bands that are reddish brown or have the same color as the dorsum in general. The belly is transparent whitish to turquoise.[5]

Habitat and conservation

This species lives near rivers in rainforest habitats at elevations below 630 m (2,070 ft).[1][5] It is arboreal; males call from vegetation usually no less than 5 m (16 ft) above the ground.[5] The eggs are laid on leaves above small ponds to which the tadpoles eventually fall.[1][5]

Hyperolius hypsiphonus is common in suitable habitat, but it is threatened by habitat loss. It is present in the Lopé National Park in Gabon, and probably in some other protected areas too.[1]

References

  1. ^ a b c d IUCN SSC Amphibian Specialist Group (2013). "Alexteroon hypsiphonus". IUCN Red List of Threatened Species. 2013: e.T56087A18372787. doi:10.2305/IUCN.UK.2013-2.RLTS.T56087A18372787.en. Retrieved 16 November 2021.
  2. ^ Amiet, J. L. (2000). "Les Alexteroon du Cameroun (Amphibia, Anura, Hyperoliidae)". Alytes (in French). 17 (3–4): 125–164.
  3. ^ a b c d Frost, Darrel R. (2022). "Hyperolius hypsiphonus (Amiet, 2000)". Amphibian Species of the World: an Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001. Retrieved 12 January 2022.
  4. ^ a b Ernst, Raffael; Kehlmaier, Christian; Baptista, Ninda L.; Pinto, Pedro Vaz; Branquima, Makaya Futuro; Dewynter, Maël; Fouquet, Antoine; Ohler, Annemarie & Schmitz, Andreas (2021). "Filling the gaps: The mitogenomes of Afrotropical egg-guarding frogs based on historical type material and a re-assessment of the nomenclatural status of Alexteroon Perret, 1988 (Hyperoliidae)". Zoologischer Anzeiger. 293: 215–224. doi:10.1016/j.jcz.2021.06.002.
  5. ^ a b c d e Channing, Allan & Rödel, Mark-Oliver (2019). Field Guide to the Frogs & other Amphibians of Africa. Cape Town: Struik Nature. pp. 168–169. ISBN 978-1-77584-512-6.
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Hyperolius hypsiphonus: Brief Summary

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Hyperolius hypsiphonus is a species of frog in the family Hyperoliidae. It is found in southern Cameroon, Gabon, Equatorial Guinea, the western Republic of the Congo, and northwestern Angola. Common name cross-banded egg-guarding frog has been proposed for it.

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