Description
A large Afrixalus (males 27–31 mm, females 32–35 mm) from bushland from Angola to Uganda, with a pattern in light and dark brown, normally with a rectangular dark dorsal spot and a narrow extension of the light dorsal pattern to the anus. Males have small, scattered and inconspicuous asperities on dorsal surfaces of head, body and limbs. Tibia with light upper side.
Most populations have a very constant pattern, but Laurent mentions that some populations vary considerably.

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Angola, Congo, the Democratic Republic of the, Kenya, Uganda

	View distribution map in BerkeleyMapper.
	View Bd and Bsal data (18 records).

Bushland localities in the central forest belt from Uganda westwards through R. D. Congo and to Angola. Has not been collected in Cameroun.

Life History, Abundance, Activity, and Special Behaviors
Voice is a typical Afrixalus call consisting of a series of clicks. In a recording from Uganda these were made at a rate of 18–20 per second; in a recording from central R. D. Congo, at 20–30 per second; in both cases with an indistinct frequency–intensity maximum at 2500–3000 cps.

Comments
This account was taken from "Treefrogs of Africa" by Arne Schiøtz with kind permission from Edition Chimaira publishers, Frankfurt am Main.

References

Schiøtz, A. (1999). Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.

Species Account Citation: AmphibiaWeb 2008 Afrixalus osorioi: Osorio's Spiny Reed Frog <https://amphibiaweb.org/species/461> University of California, Berkeley, CA, USA. Accessed May 1, 2025.

Citation: AmphibiaWeb. 2025. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 1 May 2025.

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