Leptodactylus macrosternum

Leptodactylus macrosternum is a species of frogs in the family Leptodactylidae. It is found in northern Argentina and adjacent eastern Bolivia, Paraguay, northern Uruguay, and southern and western Brazil.^[2][3] The specific name chaquensis refers to the area of Gran Chaco in Argentina.^[3] Common name Cei's white-lipped frog has been coined for it,^[1][2] although this particular species lacks the light upper lip stripe common in the genus.^[3]

Leptodactylus macrosternum
Amapá, Brazil
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Anura
Family:	Leptodactylidae
Genus:	Leptodactylus
Species:	L. macrosternum
Binomial name
Leptodactylus macrosternum Miranda-Ribeiro, 1926
Synonyms[2]
Leptodactylus ocellatus var. typica Cei, 1948 Leptodactylus chaquensis Cei, 1950

Description

Mato Grosso, Brazil

Adult males measure 65–94 mm (2.6–3.7 in) and adult females 69–98 mm (2.7–3.9 in) in snout–vent length. No light upper lip stripe is present. The dorsum and the flanks have several well-developed pairs of skin folds. Toes have lateral fringes.^[3]

Sexually active males have a pair of keratinized thumb spines. They have three distinct advertisement calls: growls, grunts, and trills, of which the first one is the most frequent.^[3]

Tadpoles of Gosner stage 36 measure 42 mm (1.7 in) in total length.^[3]

Habitat and conservation

Leptodactylus macrosternum is a ground-dwelling species occurring near ponds and flooded areas at elevations below 1,000 m (3,300 ft). The eggs are deposited in large foam nests over puddles and flooded areas in shallow water (<15 cm deep). Males call from the water's edge or from within the water.^[4]

This species is common and adapts well to anthropogenic disturbance. It is consumed as food in Argentina, which can lead to local declines. It occurs in several protected areas.^[1]