Hamptophryne alios
Silhouette: Vijay Karthick · PhyloPic
In 3 days ~30% in a week ~60%
Hamptophryne alios is a species of frog in the family Microhylidae. It is known from three localities in the southwestern Amazon Basin of Bolivia, Brazil, and Peru. This species used to constitute the monotypic genus Altigius, but molecular phylogenetic analyses have shown it to be close relative of the then-monotypic Hamptophryne, and the two genera have been merged.
The generic name Altigius honors Ronald Altig, specialist in amphibian larvae. The specific name alios is derived from the Latin words ala for "wing" and os for "mouth" and refers to the large, scalloped oral flaps pendant over the mouth of the tadpole.
The species description is based on a single adult male and series of tadpoles, one of them reared past metamorphosis. The adult male measures 49.5 mm (1.95 in) in snout–vent length. The head is broad but much narrower than body. The snout is rounded. The eyes are small. Skin is shagreen, and the occipital fold is complete. The fingers and toes have rounded tips and narrow fringes. Webbing is basal between the fingers and more developed between the toes. The dorsum is tan and mottled with dark brown. The venter is black with bluish-white... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Cuzco Frog sighting in Tambopata National Reserve on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 30th most-seen of the 44 amphibians we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
February
In that month about 40% of wildlife watchers report a Cuzco Frog in Tambopata National Reserve on a given day, against under 5% in January, April–June and August–November, the lowest months. That is one of Tambopata National Reserve's wettest months, with about 420 mm of rain against 45 mm in July.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Cuzco Frog sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Only Tambopata National Reserve, in our data
Tambopata National Reserve is the only park on Wallace's Line with enough records to rate Cuzco 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 Cuzco Frog is recorded against all the amphibians logged in Tambopata National Reserve (15 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.
