Description
A small (26–29 mm) forest frog with a square pupil from Cameroun. The males have a transverse gular flap, yellowish in colour and situated posteriorly on the throat. No dilatable skin. Two conical warts above the eyes. Dorsum with tubercles. Tarsus in males with spines. Tympanum invisible or very small. Dorsum dark brown with an X-shaped pattern in light grey, with white delimitation in the shoulder region and a +-shaped pattern in the lumbar region. A broad light band between the eyes. This pattern is unique among the Hyperoliidae. Limbs with large spots. Ventrum white.
Arlequinus krebsi is probably mute.

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Cameroon

View distribution map in BerkeleyMapper.

Found near stagnant water in forest. Only known from a few forest localities in Cameroun.

Life History, Abundance, Activity, and Special Behaviors
Development. – The eggs are placed above small pools with stagnantor slowly flowing water in dense forest. An eggmass found attached to a leaf above the water contained 16 larvae in a transparent jelly. Even at this early stage they have the dark pattern characteristic of older tadpoles. The tadpoles become rather large, up to 44 mm. They have a strong body, large eyes and a tail with a well-developed fin. The pigmentation is very dark, almost black, with a pair of irregular lines from the eyes converging towards the base of the tail and continuing as a light dorsal upper surface of the tail and fin. Tadpoles show indications of the adult pattern prior to metamorphosis. Tooth formula 1/3.

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 Arlequinus krebsi <https://amphibiaweb.org/species/475> University of California, Berkeley, CA, USA. Accessed Dec 4, 2024.

Citation: AmphibiaWeb. 2024. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 4 Dec 2024.

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