AMPHIBIAWEB
Ptychadena mapacha
Mapacha ridged frog
family: Ptychadenidae
Conservation Status (definitions)
IUCN (Red List) Status Data Deficient (DD)
CITES
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Namibia

 

View distribution map using BerkeleyMapper.

   

From the Encyclopedia of Life account:

Summary

This small carnivorous anuran is known only to a limited locale in the eastern Caprivi Strip in Namibia. Its habitat consists of dry wooded savanna with access to surface waters of the Kwando River and tributaries. The male of Ptychadena mapacha emits a distinctive call from concealed locations under vegetation.


Author: Hogan, C. Michael
License: http://creativecommons.org/licenses/by-nc-sa/3.0/

Distribution

P. mapacha is known only from Katima Mulilo, Mapacha, and the surrounding areas in and near the eastern Caprivi Strip of northeastern Namibia. It almost certainly occurs somewhat more widely, especially in southwestern Zambia, southeastern Angola, and northern Botswana adjoining the Caprivi Strip to the south (Channing, 1993).


Author: Hogan, C. Michael
License: http://creativecommons.org/licenses/by-nc-sa/3.0/

Morphology

P. mapacha is a short legged frog with minute dark doral markings. The unbroken distinct ridge beginning at the upper lip extending back almost to the upper arm insertion is a diagnostic feature that allows discrimination from P. schillukorum. The adult snout is sharp and nostrils exhibit an oval shape. The eyes are smallish, about two millimetres in diameter; tymphanum is also small and rounded. Vomerine projections present anterior to the interior nostrils. Toes are only partially webbed (Channing, 1993).


Author: Hogan, C. Michael
License: http://creativecommons.org/licenses/by-nc-sa/3.0/

Size

Based upon a very limited sample size, the snout vent length of P. mapacha can be estimated at 28 to 30 millimetres. The eye-snout distance measured from four to six millimetres (Channing, 1993).


Author: Hogan, C. Michael
License: http://creativecommons.org/licenses/by-nc-sa/3.0/

Habitat and Ecology

P. mapacha utilises arid savanna habitat which has access to lentic waters and oxbows of tributaries of the Kwando River in the Caprivi Strip of Namibia (Channing, 1993; Hogan & World Wildlife, 2012). Breeding is believed to take place in shallow, muddy ephemeral freshwater pools or river tributary side-channels. Males call from hidden locations in shallow waters beneath vegetation (Channing, 2004).


Author: Hogan, C. Michael
License: http://creativecommons.org/licenses/by-nc-sa/3.0/