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Description

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A rather large frog (Males to 37 mm, females to 43 mm) from highlands in eastern R. D. Congo. Dorsum warty, digital discs dilated, webbing reduced. No vocal sac and no vocal sac openings. Dorsum chocolate brown to almost black with numerous small orange or golden spots. Hidden parts of limbs yellow to orange, ventrum pink, mauve or bluish, whitish in juveniles. Iris brown.In view of the lack of vocal apparatus and the reduced hearing apparatus it is reasonable to assume that the males are mute. Nothing is known of amplexus, eggs, deposition site or tadpoles.By day, Callixalus is found in the broken stalks of bamboo from 2–4 m above ground in bamboo forests of the Itombwe plateau. On the Kabobo Mts. where bamboo is scarce it is found hiding during the day between the bark and the moss which often covers the trunks of trees.This account was taken from "Treefrogs of Africa" by Arne Schiøtz with kind permission from Edition Chimaira (http://www.chimaira.de/) publishers, Frankfurt am Main.
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Distribution and Habitat

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Itombwe highlands of eastern R. D. Congo, Kabobo Mt. near Kalemie (Albertville) and mountains of western Rwanda. It has never been found below 2100 m and is rare below 2400 m.
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Callixalus

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Callixalus is a genus frogs in the family Hyperoliidae.[2] It is monotypic, being represented by a single species, Callixalus pictus.[3][4] It is found in the eastern Democratic Republic of the Congo (including the Itombwe Mountains) and western Rwanda. It is sometimes known as the African painted frog.[2]

Description

Males grow to 37 mm (1.5 in) and females 43 mm (1.7 in) in snout–vent length. Dorsum is warty and chocolate brown to almost black and has many small orange or golden spots. There is no vocal sac; the males appear to be mute.[5]

Habitat and conservation

The natural habitats of Callixalus pictus are high-altitude forests, especially bamboo forests, above 2,100 m (6,900 ft) asl but more commonly only above 2,400 m (7,900 ft). During the day time they hide in broken bamboo stumps or between the bark and the moss covering tree trunks.[1][5]

Callixalus pictus is threatened by habitat loss caused by agriculture, livestock farming, wood extraction, and expanding human settlements.[1]

References

  1. ^ a b c IUCN SSC Amphibian Specialist Group (2013). "Callixalus pictus". IUCN Red List of Threatened Species. 2013: e.T56091A16937397. doi:10.2305/IUCN.UK.2013-2.RLTS.T56091A16937397.en. Retrieved 16 November 2021.
  2. ^ a b Frost, Darrel R. (2015). "Callixalus pictus Laurent, 1950". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 18 May 2015.
  3. ^ Frost, Darrel R. (2015). "Callixalus Laurent, 1950". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 18 May 2015.
  4. ^ "Hyperoliidae". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2015. Archived from the original on 26 April 2015. Retrieved 18 May 2015.
  5. ^ a b "Callixalus pictus". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2015. Retrieved 18 May 2015.
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Callixalus: Brief Summary

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Callixalus is a genus frogs in the family Hyperoliidae. It is monotypic, being represented by a single species, Callixalus pictus. It is found in the eastern Democratic Republic of the Congo (including the Itombwe Mountains) and western Rwanda. It is sometimes known as the African painted frog.

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