Bothrops leucurus
Silhouette: Steven Traver · PhyloPic
In 3 days ~60% in a week ~90%
Bothrops leucurus, commonly known as the whitetail lancehead or the Bahia lancehead, is a species of venomous snake, a pit viper in the family Viperidae. The species is endemic to Brazil. There are no subspecies which are recognized as being valid. A female owned by YouTuber Venom Central is over six feet long.
The specific name, leucurus, meaning "whitetail", is from the Latin words leucus (white) and urus (tail). The specific name, pradoi, of the junior synonym Trimeresurus pradoi, is in honor of Brazilian herpetologist Alcides Prado.
The color varies from tan to reddish-brown, the pattern varies, from darker and lighter spots, similar to light diagonal dorsolateral lines. It has 23 to 31 rows of dorsal scale of the medium body, the belly is yellowish or whitish in color with dark, brown or gray spots, and irregular spots on the sides. It is a snake with terrestrial behavior, growing on average in 250–1840 mm, mainly found in forests, arid, semi-arid, dry, humid and sub-humid regions.
Bothrops leucurus is found in eastern Brazil along the Atlantic coast from northern Espírito Santo north to Alagoas and Ceará. It... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chapada Diamantina National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salvador | 🇧🇷 Brazil |
Possible
About 30% of wildlife watchers report a Whitetail Lancehead sighting in Chapada Diamantina National Park on a given day, based on 9 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.
March
In that month about 50% of wildlife watchers report a Whitetail Lancehead in Chapada Diamantina National Park on a given day, against under 5% in May to September, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Whitetail 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 Chapada Diamantina National Park, in our data
Chapada Diamantina National Park is the only park on Wallace's Line with enough records to rate Whitetail Lancehead sightings: about 30% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Whitetail Lancehead is recorded against all the reptiles logged in Chapada Diamantina National Park (9 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.
