Breviceps adspersus Peters, 1882

Common Names and General Appearance

Breviceps adspersus, commonly known as the common rain frog, has a brownish-green coloration, a round body, and stumpy legs. This species cannot jump or swim.

Digging Adaptations

It has sharply rigid metatarsal tubercles, which it uses to dig deep burrows.

Sexual Dimorphism and Size

The species displays significant sexual dimorphism: males reach 30–47 mm in length, while females are typically larger, measuring 40–60 mm.

Subspecies Classification

Two recognized subspecies exist: Breviceps adspersus adspersus and Breviceps adspersus pentheri. B. a. adspersus occurs mostly in southeast Africa, while B. a. pentheri is found in southern Africa. It is not definitively confirmed that the two are separate subspecies, but they remain classified as such due to differences in coloration and markings.

Habitat

The common rain frog inhabits temperate forests and open grasslands of southeast Africa.

Activity Patterns

It spends the dry winter months inside burrows, and emerges after rain to feed and mate, usually at night.

Diet

Its diet consists of termites, ants, and other invertebrates.

Behavioral Traits

Individuals of this species also climb on one another and shed and eat their skin.

Population Status

The species has a stable population, and is described as "locally common".

Mating Adaptation

Because males are too small to grip females during mating the way most other frog species do, the male secretes a glue-like substance to hold the mating pair together.

Nesting Behavior

The attached pair burrows backwards into the soil until they reach a chamber the female dug 30 cm below the surface.

Reproductive Strategy

The female lays her eggs in this chamber, and the eggs hatch directly into froglets rather than the tadpole stage seen in many other frogs.