Boana calcarata
Silhouette: Andy Wilson · PhyloPic
In 3 days ~40% in a week ~70%
Troschel's treefrog (Boana calcarata), also known as the blue-flanked treefrog or the convict treefrog, is a species of frog in the family Hylidae. It is found in most parts of the Amazon Basin including Suriname. Colombian, Guianan and Venezuelan records need confirmation.
This species was originally described by Franz Hermann Troschel as Hyla calcarata in 1848. After Edward Drinker Cope transferred it to the genus Hypsiboas as Hypsiboas calcaratus in 1867, it was variously recognized with either name until Faivovich and colleagues validated Hypsiboas in 2005. However, in 2017 Alain Dubois showed that Hypsiboas was a junior synonym of Boana, the latter then being the valid name. Many sources, however, still use the old name.
Adult males measure 28–43 mm (1.1–1.7 in) and adult females 46–56 mm (1.8–2.2 in) in snout–vent length. The fingers have only basal webbing while the toes are webbed. Males have pre-pollical spines. The dorsal coloration varies from light brown to reddish brown or brown. There is a dark brown middorsal line, and some specimens have brown diffuse transversal bands. The limbs bear pale brown transversal bars dorsally. Scattered minute... Wikipedia →
Recording0:06
Ecuador · 2026
© henryedelman · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manu National Park | 🇵🇪 Peru | |
| 2 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 3 | Yasuní National Park | 🇪🇨 Ecuador |
With luck
About 10% of wildlife watchers report a Convict Tree Frog sighting in Yasuní National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 49 amphibians we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
December
In that month about 30% of wildlife watchers report a Convict Tree Frog in Yasuní National Park on a given day, against under 5% in March, May and July–October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Convict Tree Frog sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
3rd of 3
Of the 3 parks where we can rate Convict Tree Frog sightings, Yasuní National Park ranks 3rd at about 10%. The best odds are in Manu National Park (Peru, about 20%) and Cuyabeno Wildlife Reserve (Ecuador, about 20%).
Same genus: Boana
The closest relatives of the Convict Tree Frog that you can see in Yasuní National Park (genus Boana, Gladiator Tree Frogs) are Canelos Treefrog (about 20%), Rocket Tree Frog (about 20%) and Rough-skinned Green Tree Frog (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Convict Tree Frog is recorded against all the amphibians logged in Yasuní National Park (18 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.
