It is a small to medium-sized anuran belonging to the family Leptodactylidae, characterized by a robust body and relatively short hind limbs. Adults typically reach a snout-vent length of 30 to 38 millimeters, with females being slightly larger than males. Its head is longer than wide, showing a distinctive pointed, protruding snout that facilitates its burrowing habits. The dorsal coloration ranges from grayish-brown to pale brown, decorated with variable dark markings or longitudinal stripes, and a dark stripe running from the snout through the eye, giving it a mustache-like appearance. The ventral surface is smooth and whitish or yellowish, while the dorsal skin displays subtle, non-prominent glandular folds. Males feature a single, highly distensible vocal sac that expands dramatically during call production.

Geographical distribution: This amphibian is widely distributed across the southern cone of South America, inhabiting temperate and subtropical zones. It occurs throughout northern and central Argentina, extending as far south as the provinces of Buenos Aires and La Pampa. It is also found across the entirety of Uruguay, in southern Brazil (predominantly restricted to the state of Rio Grande do Sul), and throughout most of Paraguay, exhibiting high ecological plasticity across these diverse territorial boundaries.

Habitat: It primarily inhabits lowland plains, grasslands, humid savannas, and open formations associated with the Chaco, Pampa, and Espinal phytogeographic regions. It is a highly adaptable species that successfully colonizes human-modified environments, such as agricultural fields, cattle pastures, roadside ditches, and suburban gardens. It requires seasonal or temporary water bodies, such as rain puddles, flooded depressions, and temporary ponds, to complete its life cycle.

Feeding: Its diet is strictly insectivorous and opportunistic, consisting of a wide array of small terrestrial invertebrates. Its prey includes ants, beetles, spiders, dipterans, and various insect larvae. Utilizing a sit-and-wait hunting strategy, it remains completely motionless until an unsuspecting prey item comes within range, capturing it rapidly with its sticky, projectile tongue.

Behavior: It exhibits nocturnal and semi-fossorial habits, spending the hot daylight hours concealed under fallen logs, rocks, or inside underground chambers that it digs in loose soil. Its activity increases significantly during rainy nights or periods of high atmospheric humidity. Males are famous for producing an advertisement call characterized by a high-pitched, short whistle, which is used to establish territorial boundaries and attract females to the breeding sites.

Reproduction: The breeding cycle takes place during the warm, rainy spring and summer months, heavily dependent on heavy rainfall. Males construct subterranean mud chambers close to the margins of drying or temporary pools. Within these secure underground retreats, amplexus occurs, and the female deposits eggs enveloped in a thick foam nest created by whipping up cloacal fluids with her hind legs. This foam protects the developing embryos from desiccation and predators until subsequent heavy rains flood the chamber, washing the newly hatched tadpoles into the neighboring aquatic environment to complete their larval development.

Conservation status: It is currently classified as Least Concern (LC) on the IUCN Red List. This status is justified by its extensive geographical range, stable and abundant populations, and its high tolerance for moderate habitat disturbances caused by agricultural expansion and suburban development.