American Cinchona Plantation Tree Frog

American Cinchona Plantation Tree Frog

Isthmohyla rivularis

Silhouette: Dmitry Bogdanov (vectorized by T. Michael Keesey) · PhyloPic

LCNTVUENEndangeredCR
Daily sighting probability <5% · Rare
at La Amistad International Park (Panama)

In 3 days ~10% in a week ~30%

6 Verified sightings at La Amistad International Park (Panama) From 2019 to 2026
6 In 1 park
August Best month
🌙 Nocturnal When it's spotted

About the American Cinchona Plantation Tree Frog

Isthmohyla rivularis is a rare species of frog in the family Hylidae. It occurs in the cordilleras of Tilarán, Central, and Talamanca in Costa Rica as well as adjacent western Panama. The species was thought to already have become extinct, but in 2007, it was re-discovered in the Monteverde Cloud Forest of Costa Rica when a single male was found. In 2008, a gravid female and few males were spotted. The common name American Cinchona Plantation treefrog has been suggested for it.

Males grow to 34 mm (1.3 in) and females to 37 mm (1.5 in) in snout–vent length. The snout is moderately short and acutely rounded. The tympanum is barely discernible. The fingers have large discs and are up to one-third webbed. The toes have discs that are slightly smaller than those on the fingers and are two-thirds webbed. The dorsal color varies from grey to light brown. Most specimens have a thin, dark line running through the eye. Other dark markings are variably present. The flanks are usually yellowish, but may in some individuals appear greenish or bluish. The iris is bronze and has black reticulations.

Isthmohyla rivularis is found along or in clear streams... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 La Amistad International Park (Panama) 🇵🇦 Panama
<5%

More parks will be added in future updates.

Before you go

What are the chances of seeing an American Cinchona Plantation Tree Frog in La Amistad International Park (Panama)?

Rare

Under 5% of wildlife watchers report an American Cinchona Plantation Tree Frog sighting in La Amistad International Park (Panama) on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 24th most-seen of the 32 amphibians we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see an American Cinchona Plantation Tree Frog in La Amistad International Park (Panama)?

April, June, August and October–November

In those months about 10% of wildlife watchers report an American Cinchona Plantation Tree Frog in La Amistad International Park (Panama) on a given day, against under 5% in May, July, September and December–March, the lowest months.

What time of day is best to see an American Cinchona Plantation Tree Frog?

Between 7 and 10 pm

Across all the parks we cover, that three-hour window holds the most American Cinchona Plantation Tree Frog sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.

Where else can you see an American Cinchona Plantation Tree Frog?

Only La Amistad International Park (Panama), in our data

La Amistad International Park (Panama) is the only park on Wallace's Line with enough records to rate American Cinchona Plantation Tree Frog sightings: under 5% of wildlife watchers there report one on a given day.

Which relatives of the American Cinchona Plantation Tree Frog live in La Amistad International Park (Panama)?

Same family: Hylidae

The closest relatives of the American Cinchona Plantation Tree Frog that you can see in La Amistad International Park (Panama) (family Hylidae, Hylid Tree Frogs) are Harlequin Treefrog (about 10%), Masked Tree Frog (about 10%) and Sipurio Snouted Treefrog (about 10%), with each one's daily chance of a sighting.

Where does the American Cinchona Plantation Tree Frog sighting chance come from?

GBIF citizen-science records

It is estimated from how often the American Cinchona Plantation Tree Frog is recorded against all the amphibians logged in La Amistad International Park (Panama) (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.

← Back to La Amistad International Park (Panama)