Tropidolaemus wagleri
Silhouette: Steven Traver · PhyloPic
In 3 days ~60% in a week ~90%
Tropidolaemus wagleri, more commonly known as Wagler's pit viper, is a species of venomous snake, a pit viper in the subfamily Crotalinae of the family Viperidae. The species is endemic to Southeast Asia. There are no subspecies that are recognized as being valid. It is sometimes referred to as the temple viper because of its abundance around the Temple of the Azure Cloud in Malaysia.
The specific name, wagleri, is in honour of German herpetologist Johann Georg Wagler. The Wagler's pit viper is sexually dimorphic: the females grow to approximately 1 m (39+1⁄4 in) in total length (including tail), their bodies being black with yellow stripes. Males, on the other hand, typically do not exceed 75 cm (29+1⁄2 in). Males have large triangular-shaped heads, with relatively thin green bodies. They are almost entirely arboreal, and their tails are prehensile to aid in climbing.
They are found in a wide variety of colors and patterns, often referred to as "phases". In the past, some researchers classified the different phases as subspecies. The phases vary greatly from having a black or brown coloration as a base, with orange and yellow banding, to others having... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 2 | Khao Sok National Park | 🇹🇭 Thailand | |
| 3 | Taman Negara National Park | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore | |
| 2 | Kuala Lumpur | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Los Angeles Zoo | 🇺🇸 United States | |
| 2 | Jacksonville Zoo and Gardens | 🇺🇸 United States | |
| 3 | National Zoo of Malaysia | 🇲🇾 Malaysia | |
| 4 | Fort Worth Zoo | 🇺🇸 United States | |
| 5 | Gembira Loka Zoo | 🇮🇩 Indonesia | |
| 6 | Siam Serpentarium | 🇹🇭 Thailand | |
| 7 | Entopia | 🇲🇾 Malaysia | |
| 8 | BXSea Aquarium | 🇮🇩 Indonesia |
Possible
About 30% of wildlife watchers report a Wagler's Pit Viper sighting in Singapore on a given day, based on 934 verified sightings from GBIF citizen-science data. It is the 7th most-seen of the 64 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
December to August
In those months about 30% of wildlife watchers report a Wagler's Pit Viper in Singapore on a given day, against about 20% in September to November, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Wagler's Pit Viper sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Wagler's Pit Viper sightings, Singapore has the highest daily chance: about 30%. Next come Kuala Lumpur (Malaysia, about 10%).
GBIF citizen-science records
It is estimated from how often the Wagler's Pit Viper is recorded against all the reptiles logged in Singapore (934 verified sightings), 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.
