Cape Mountain Rain Frog (Breviceps montanus)

View the above photo record (by Eloise Costandius) in FrogMAP here.

Find the Cape Mountain Rain Frog in the FBIS database (Freshwater Biodiversity Information System) here.

Family Breviceptidae

CAPE MOUNTAIN RAIN FROG – Breviceps montanus

Power, 1926

Habitat

B. montanus is restricted to the Fynbos Biome, and usually occurs in Mountain Fynbos vegetation, but is also known from altered habitats such as pine plantations. It is usually found on coarse, acidic, sandy soils, but it is also known from heavier, shale-derived soils. It generally occurs at high altitudes but is also found at sea level in areas where mountains reach the coast (e.g. Betty’s Bay 3418BD). In such coastal situations it appears to be restricted to fynbos vegetation and is not found in coastal thicket (cf. B. rosei).

Behaviour

Breviceps montanus – Bushmanskloof, Western Cape
Photo by Zenobia van Dyk

Despite a relatively extensive distribution in the Western Cape, little is known of the biology of this species. Calling occurs both at night and during the day, usually during and after rain showers in winter and spring (June–November), but dense mist may be sufficient to stimulate calling. Channing (2001) collected a female with large eggs in October, and recorded calling activity in January. Males have been found calling from vegetation above ground level (Visser 1979d) or while moving about on the surface (L.R. Minter pers. obs.). The breeding biology is assumed to be similar to that of other members of the genus.

Status and Conservation

B. montanus occurs in relatively undisturbed montane habitat, and it is found within a number of protected areas. It is not threatened and is probably secure for the foreseeable future.

Breviceps montanus – Fernkloof, Western Cape
Photo by Keir Lynch

Distribution

This diminutive species occurs widely in the Cape fold mountains of the Western Cape Province, from northeast of Clanwilliam (3118DD), to the Outeniqua Mountains in the southeast (3323CC). On the Cape Peninsula it occurs with B. gibbosus in some localities, and to the east its range coincides, in part, with that of B. acutirostris and B. fuscus.

B. montanus probably occurs in a number of relatively inaccessible mountainous areas not surveyed during the atlas period. The eastern limits of its distribution, in particular, are not yet certain.

Distribution of Breviceps montanus. Taken from the FrogMAP database, April 2022.

Further Resources

Virtual Museum (FrogMAP > Search VM > By Scientific or Common Name)

More common names: Mountain Rain Frog (Alternative English Name); Kaapse Bergblaasoppadda (Afrikaans)

Recommended citation format for this species text:

Harrison JA, Tippett RM.  Cape Mountain Rain Frog Breviceps montanus. BDI, Cape Town.
Available online at http://thebdi.org/2022/02/01/cape-mountain-rain-frog-breviceps-montanus/

Recommended citation format: 

This species text has been updated and expanded from the text in the
2004 frog atlas. The reference to the text and the book are as follows:

Harrison JA 2004 Breviceps montanus Cape Mountain Rain Frog. In Minter LR
et al 2004.

Minter LR, Burger M, Harrison JA, Braack HH, Bishop PJ, Kloepfer D (eds)
2004. Atlas and Red Data Book of  the Frogs of South Africa, Lesotho and
Swaziland. Smithsonian Institution, Washington, and Avian Demography
Unit, Cape Town.

Ryan Tippett
Ryan Tippett
Ryan is an enthusiastic contributor to Citizen Science and has added many important and interesting records of fauna and flora. He has been a member of the Virtual Museum since 2014 and has currently submitted over 12,000 records. He is on the expert identification panel for the OdonataMAP project. Ryan is a well-qualified and experienced Field Guide, and Guide Training Instructor. He has spent the last 18 years in the guiding and tourism industries. Ryan loves imparting his passion and knowledge onto others, and it is this that drew him into guide training in particular. Something that he finds incredibly rewarding is seeing how people he's had the privilege of teaching have developed and gone on to greater things. His interests are diverse and include Dragonflies, Birding, Arachnids, Amphibians, wild flowers and succulents, free diving and experiencing big game on foot. With this range of interests, there is always likely be something special just around the corner!