White-lipped Island Pitviper

White-lipped Island Pitviper

Trimeresurus insularis

Silhouette: Steven Traver · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~30% · Possible
at Bali Barat National Park
9 Verified sightings at Bali Barat National Park From 2019 to 2026
85 Verified sightings across all 2 parks 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

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Komodo National Park 🇮🇩 Indonesia
~60%
2 Bali Barat National Park 🇮🇩 Indonesia
~30%

Quick answers

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

About 30% of wildlife watchers report a White-lipped Island Pitviper sighting in Bali Barat National Park, based on 9 verified sightings from GBIF citizen-science data.

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

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

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