Leptodactylus mystacinus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~20% in a week ~50%
Leptodactylus mystacinus is a species of frog in the family Leptodactylidae. It is found in eastern Bolivia and eastwards to Brazil, Paraguay, and Uruguay and southwards to central Argentina. It is also known as the mustached frog.
Adult males measure 44–65 mm (1.7–2.6 in) and adult females 54–67 mm (2.1–2.6 in) in snout–vent length. The snout in males is more spatulate than in females. A pair of dorsolateral folds runs from behind the eye to the upper groin; a second pair is either incomplete or interrupt and starts from the forearm insertion and runs along the flanks. The toes lack fringes and fleshy ridges, the toe tips are narrow. The dorsum is uniform, striped, or bears small dark spots. The upper pair of dorsolateral folds is lined with a distinct dark brown stripe or band below and usually with a light pinstripe above; the latter becomes often broader and more distinct posteriorly. The lower dorsolateral folds along the flanks may have dark or cream highlights, or both. The upper lip typically has a distinct light stripe. The venter ranges from being immaculate to mottled.
Leptodactylus mystacinus is a terrestrial frog found in... Wikipedia →
Recording0:20
Uruguay · 2025
© em-hix · iNaturalist · CC BY-NC 4.0
Recording0:32
Brazil · 2021
© Laurent Quéno · iNaturalist · CC BY-NC 4.0
Recording0:13
Argentina · 2024
© Nadia Naab · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cordoba | 🇦🇷 Argentina |
With luck
About 10% of wildlife watchers report a Mustached Frog sighting in Iguazú National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 6 amphibians we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
February and October
In those months about 20% of wildlife watchers report a Mustached Frog in Iguazú National Park on a given day, against under 5% in March–September and November, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Mustached Frog sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Iguazú National Park, in our data
Iguazú National Park is the only park on Wallace's Line with enough records to rate Mustached Frog sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Mustached Frog is recorded against all the amphibians logged in Iguazú National Park (6 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
