Yarará Lancehead

Yarará Lancehead

Bothrops jararaca

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Itatiaia National Park
8 Verified records at Itatiaia National Park
January Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

Bothrops jararaca—known as the jararaca or yarara—is a highly venomous pit viper species endemic to South America in southern Brazil, Paraguay, and northern Argentina. The specific name, jararaca, is derived from Old Tupi îararaka. Within its geographic range, it is often abundant and is an important cause of snakebite. No subspecies are currently recognized. The drugs known as angiotensin converting enzyme (ACE) inhibitors, used for the treatment of hypertension and some types of congestive heart failure, were developed from a peptide found in the venom of this species. Wikipedia →

20–30% of wildlife watchers report a Yarará Lancehead sighting in Itatiaia National Park, based on 8 days of visitor records from GBIF citizen-science data.

Closest Relatives at Itatiaia National Park

Fonseca's Lancehead
LC

Fonseca's Lancehead

☀️🌙 Day & Night Reptile

Bothrops fonsecai

Insufficient data
Neotropical Rattlesnake
LC

Neotropical Rattlesnake

🌅 Crepuscular Reptile

Crotalus durissus

Insufficient data

📅 Monthly Probability

40–50
Jan
5–10
Feb
30–40
Mar
5–10
Apr
5–10
May
5–10
Jun
5–10
Jul
<5
Aug
<5
Sep
10–20
Oct
20–30
Nov
5–10
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Serra dos Órgãos National Park 🇧🇷 Brazil
20–30%
2 Itatiaia National Park 🇧🇷 Brazil
20–30%
3 Tijuca National Park 🇧🇷 Brazil
10–20%
4 Chapada Diamantina National Park 🇧🇷 Brazil
Insufficient data
5 Iguaçu National Park 🇧🇷 Brazil
Insufficient data
6 Iguazú National Park 🇦🇷 Argentina
Insufficient data

Quick answers

What are the chances of seeing a Yarará Lancehead in Itatiaia National Park?

About 21% of wildlife watchers report a Yarará Lancehead sighting in Itatiaia National Park, based on 8 days of visitor records from GBIF citizen-science data.

When is the best time to see Yarará Lancehead in Itatiaia National Park?

January has the highest sighting rate for Yarará Lancehead in Itatiaia National Park in our monthly data.

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