Physalaemus olfersii (Lichtenstein & Martens, 1856)

Size

Adult male Physalaemus olfersii measure 26–36 mm (1.0–1.4 in) and adult females measure 22–41 mm (0.9–1.6 in) in snout–vent length.

Body & Head Shape

This species has a moderately robust body, and a head that is longer than it is wide. In dorsal view, the snout ranges from pointed to sub-elliptical, and it appears acute when viewed from the side.

Tympanum & Fold

Both the tympanum and the supra-tympanic fold are indistinct.

Limb Structure

Fingers and toes are thin and long, with slightly expanded tips, and have no webbing.

Dorsal Coloration

Dorsal coloration ranges from light brown to gray, marked with small, irregular, scattered brown blotches. A median line runs across the posterior two-thirds of the dorsum.

Loreal & Postorbital Markings

The loreal region is dark brown with scattered white dots. A black stripe extends from the postorbital region to the anterior margin of the inguinal gland.

Light Facial & Dorsal Lines

A weak white line runs along the canthus rostralis, becoming clearly defined along the upper eyelid border and the dorsolateral fold.

Ventral Coloration

The gular region is dark gray with white dots that extend into the anterior abdomen; the posterior abdomen is uniformly light brown.

Male Reproductive Anatomy

Males of this species have a subgular vocal sac.

Habitat Elevation Range

Physalaemus olfersii is found in primary and secondary forest at elevations below 1,200 m (3,900 ft).

Microhabitat

It inhabits leaf litter, the ground, and low vegetation.

Breeding Habitat

Breeding occurs in both temporary and permanent ponds.

Population Status & Threats

It is a common species, though it is likely threatened by habitat loss.