Erythrolamprus reginae
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~50%
The royal ground snake (Erythrolamprus reginae) is a species of snake in the family Colubridae. The species is endemic to northern South America. Erythrolamprus reginae belongs to the genus Erythrolamprus, which contains over 50 species. The genus Erythrolamprus belongs to the subfamily Dipsadinae, which is sometimes referred to as the family Dipsadidae.
Recent phylogenetic analysis of morphological and molecular DNA evidence has shown that Erythrolamprus reginae is now likely paraphyletic. Erythrolamprus zweifeli was previously considered to be a subspecies of Erythrolamprus reginae and called Erythrolamprus reginae zweifeli. However, based on notable differences in coloration and scale counts, it is now considered to be a separate species. Erythrolamprus pseudoreginae of Tobago, named in 2019, was also previously considered to be part of Erythrolamprus reginae, but is now separate.
The relationships of Erythrolamprus species located in northern South America can be shown in the cladogram below: It feeds on frogs, frog eggs, tadpoles, fish, small birds, and lizards. In an experiment conducted by biologists from the University of California... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru | |
| 2 | Manu National Park | 🇵🇪 Peru |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Maceió | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Royal Ground Snake sighting in Manu National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 46th most-seen of the 56 reptiles 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.
January and March
In those months about 20% of wildlife watchers report a Royal Ground Snake in Manu National Park on a given day, against under 5% in February, April, June–October and December, the lowest months. Those are among Manu National Park's wettest months, with about 240 mm of rain a month against 60 mm in August.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Royal Ground Snake sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Royal Ground Snake sightings, Manu National Park ranks 2nd at about 10%. The best odds are in Tambopata National Reserve (Peru, about 20%).
Same family: Colubridae
The closest relatives of the Royal Ground Snake that you can see in Manu National Park (family Colubridae, Colubrid Snakes) are Blunthead Tree Snake (about 30%), Tschudi's False Coral Snake (about 20%) and Northern Woodland Racer (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Royal Ground Snake is recorded against all the reptiles logged in Manu National Park (8 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.
