Trimeresurus venustus
Silhouette: Steven Traver · PhyloPic
In 3 days ~70% in a week ~90%
Trimeresurus venustus is a venomous pit viper species endemic to southern Thailand. Its common names include beautiful pit viper and brown-spotted pit viper. This species was considered a synonym of Trimeresurus kanburiensis until around the turn of the century. It was described by Gernot Vögel in 1991. It is in the subgenus Trimeresurus.
Derived from Latin, the name venustus means beautiful, and refers to the striking, intricate color scheme. This species has a slender body and is approximately 580 mm (23 in) in length. They have a triangular-shaped head, like all pit vipers. Their labials are green with brown patches and a dark postorbital stripe is present.
Their distinctive coloration ranges from vibrant green to olive green with brown or reddish-orange bands along the length of the body. In males, the dorsal area is an olive or bluish-green color, while females have a grass-green dorsal area. Their short snout is slightly flattened with a small ridge, and they have heat-sensing pits in-between their nostrils. Their irises are a light orange with brown specks. The dorsal scales are strongly keeled and have a count of 21 – 21 – 15... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Luang National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Tierpark Hagenbeck | 🇩🇪 Germany | |
| 2 | Snake Farm of Queen Saovabha Memorial Institute | 🇹🇭 Thailand |
Possible
About 30% of wildlife watchers report a Beautiful Pitviper sighting in Khao Luang National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 7th most-seen of the 16 reptiles we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
July
In that month about 70% of wildlife watchers report a Beautiful Pitviper in Khao Luang National Park on a given day, against under 5% in March to May, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Beautiful Pitviper sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Khao Luang National Park, in our data
Khao Luang National Park is the only park on Wallace's Line with enough records to rate Beautiful Pitviper sightings: about 30% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Beautiful Pitviper is recorded against all the reptiles logged in Khao Luang 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.
