Siamese Russell's Viper
Daboia siamensis
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassSquamata
- FamilyViperidae (Vipers)
- GenusDaboia
- SpeciesDaboia siamensis (Siamese Russell's Viper)
About the Siamese Russell's Viper
Daboia siamensis (Common name: eastern Russell's viper, Siamese Russell's viper, more) is a viper species which is endemic to parts of Southeast Asia, southern China and Taiwan. It was formerly considered to be a subspecies of Daboia russelii (as Daboia russelli siamensis), but was elevated to species status in 2007.
Dorsally, the color pattern is the same as that of D. russelii, except that the color is more grayish or olive, with small spots between the large spot rows. The venter is suffused with gray posteriorly. Common names for D. siamensis include eastern Russell's viper and Siamese Russell's viper.
Previously, other common names were used to describe subspecies that are now part of the synonymy of this species: Indonesian Russell's viper for "limitis", and Formosan Russell's viper for "formosensis". Daboia siamensis is found in Myanmar, Thailand, Cambodia, China(Guangxi Guangdong), parts of India, Taiwan, Nepal and Indonesia (Ende, Bima-Sumbawa, Flores, east Java, Komodo, Lomblen Islands).
Brown (1973) mentions that D. siamensis can also found in Vietnam, Laos and on the Indonesian island of Sumatra. Ditmars (1937)... Wikipedia →
Closest Relatives at Komodo National Park
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 | Khao Yai National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
Quick answers
What are the chances of seeing a Siamese Russell's Viper in Komodo National Park?
About 30% of wildlife watchers report a Siamese Russell's Viper sighting in Komodo National Park, based on 16 verified sightings from GBIF citizen-science data.
When is the best time to see Siamese Russell's Viper in Komodo National Park?
March has the highest sighting rate for Siamese Russell's Viper in Komodo National Park in our monthly data.