Bothrops marmoratus
Silhouette: Steven Traver · PhyloPic
In 3 days ~60% in a week ~90%
Bothrops marmoratus, also known as the marbled lancehead, is a species of snake in the family Viperidae. It is native to Brazil. The specific epithet of this species is a reference to the fact that this species pigmentation looks marbled.
The holotype for the species was an adult female collected in Ipameri in Brazil. It belongs to the Bothrops neuwidi species group. The species is known to inhabit only the state of Goiás in Brazil. The snake is nocturnal and viviparous. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra da Canastra National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Marbled lancehead sighting in Serra da Canastra National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 8 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
February
In that month about 50% of wildlife watchers report a Marbled lancehead in Serra da Canastra National Park on a given day, against under 5% in January and May–November, the lowest months. That is one of Serra da Canastra National Park's wettest months, with about 250 mm of rain against almost none in July.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Marbled lancehead sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Serra da Canastra National Park, in our data
Serra da Canastra National Park is the only park on Wallace's Line with enough records to rate Marbled lancehead sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Marbled lancehead is recorded against all the reptiles logged in Serra da Canastra National Park (5 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.
