White-lipped Island Pitviper

White-lipped Island Pitviper

Trimeresurus insularis

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~60% · Likely
at Komodo National Park
76 Verified sightings at Komodo National Park From 2019 to 2026
9 Verified sightings across 1 park From 2019 to 2026
April Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the White-lipped Island Pitviper

Trimeresurus insularis, commonly known as the Indonesian pit viper, Lesser Sunda Islands pit viper, Komodo Island pit viper, Sunda white-lipped pit viper or red-tailed pit viper, also popularly known as blue pit viper, blue viper or blue insularis, is a species of venomous pit viper found in eastern Java and the Lesser Sunda Islands.

The scalation includes 21 rows of dorsal scales at midbody, 156–164/156–167 ventral scales in males/females, 70–75/54–59 subcaudal scales in males/females, and 7–12 supralabial scales. Their color patterns are often found to be green or blue-green, with specific populations even containing yellow variants as well.

It is found in Indonesia on eastern Java, Adonara, Alor, Bali, Flores, Komodo, Lombok, Padar, Rinca, Romang, Rote, Sumba, Sumbawa, Timor and Wetar. They are also found in neighboring Timor-Leste. The type locality given is "Soe, Timor". They are arboreal and can be found in dry monsoon forests at elevations up to 1,200 m (3,900 ft) above sea level.

Kramer, E. 1977. Zur Schlangenfauna Nepals. Rev. suisse Zool. 84 (3): 721–761. (Trimeresurus albolabris insularis, p.... Wikipedia →

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 Daily sighting probability
1 Bali Barat National Park 🇮🇩 Indonesia
~30%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a White-lipped Island Pitviper in Komodo National Park?

About 60% of wildlife watchers report a White-lipped Island Pitviper sighting in Komodo National Park, based on 76 verified sightings from GBIF citizen-science data.

When is the best time to see White-lipped Island Pitviper in Komodo National Park?

April has the highest sighting rate for White-lipped Island Pitviper in Komodo National Park in our monthly data.

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