Ceylon Pit Viper

Ceylon Pit Viper

Craspedocephalus trigonocephalus

Silhouette: Vijay Karthick · PhyloPic

Endemic
Daily sighting probability ~80% · Very likely
at Sinharaja Forest Reserve
278 Verified sightings at Sinharaja Forest Reserve From 2019 to 2026
278 Verified sightings across 1 park From 2019 to 2026
September Best month highest sighting rate
🌅 Crepuscular When it's spotted at dawn and dusk

About the Ceylon Pit Viper

Craspedocephalus trigonocephalus, the Sri Lankan pit viper, Ceylon pit viper, Sri Lankan green pitviper or locally, pala polonga, (Sinhala: පළා පොළඟා) is a venomous pit viper species endemic to Sri Lanka. No subspecies are currently recognized.

Craspedocephalus trigonocephalus is a sexually dimorphic, mid-sized, cylindrical species. These snakes measure 20–25 cm (7.9–9.8 in) at birth, and males grow to a maximum total length of 60–75 cm (24–30 in). The neck is distinct from the flattened, triangular head. There is a loreal pit on each side of the head. Mid-sized eyes and a short, rounded, broad snout are present. The males are considerably smaller than females, which can grow up to 130 cm (51 in) in total length. The ground color of the snake is variable and cryptic. Typically, it is a green snake with a black variegated pattern, and a black temporal line is usually present. The wet zone snakes have these black patterns more clearly marked. The vertebral area has a tinge of yellow. The tail is black. The ventral scales are light greenish-yellow or may even be grey. Some snakes have only the black temporal line and the black tail, with the rest of the body being green... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Sinharaja Forest Reserve 🇱🇰 Sri Lanka
~80%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Ceylon Pit Viper in Sinharaja Forest Reserve?

About 80% of wildlife watchers report a Ceylon Pit Viper sighting in Sinharaja Forest Reserve, based on 278 verified sightings from GBIF citizen-science data.

When is the best time to see Ceylon Pit Viper in Sinharaja Forest Reserve?

September has the highest sighting rate for Ceylon Pit Viper in Sinharaja Forest Reserve in our monthly data.

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