Reptilia · Squamata
Trimeresurus popeiorumSmith, 1937
Pope’s Tree Viper
Identification not confirmed. One observer recorded this animal as this species and no one has since agreed, so the photograph may show a different animal.
Photograph by Cheongweei Gan, CC BY, via iNaturalist
A tree-dwelling, nocturnal, meat-eating snake from the Oriental region, reaching 105 cm nose to tail.
Also called Pope's Bamboo Pit Viper, Pope’s Green Pit Viper, Yingjiang green pitviper.
Once published as Trimeresurus yingjiangensis — those names reach this page.
Reptilia › Squamata › Viperidae › Trimeresurus
- Grows to
- 1050mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Nocturnal
- Lives up to
- 14years
Longer than 69% of all vipers anyone has measured.
The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 280 to 3,900 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.
What is known
36 sourced facts, each taken from a named scientific dataset. How to read these.
Cited from a dataset unless a row is marked otherwise.
Standing in the world
- Still living
- Extant
- Conservation status
- Least Concern
- Status assessed · the year the Red List last looked
- 2011
The animal itself
- Limbs
- None
- Colour on the back
- Green
- Pattern on the back
- Uniform
- Venomous
- Yes
- Fangs
- At the front of the mouth
- Longest recorded life
- 14years
Stark et al. 2020
Size
- Length snout to vent · greatest recorded
- 710mm2 ft 4 in
- Length snout to vent · adult female mean
- 524mm20.5 in
- Length nose to tail · greatest recorded
- 1050mm3 ft 5 in
- Female length · mean, nose to tail
- 632mm2 ft 1 in
- Hatchling length · nose to tail
- 160mm6.25 in
- Body mass · greatestcomputed
- 254.2g9 oz
1050 mm total length (Feldman et al. 2016), Mirza et al. 2023 (5 females 417-710, mean 524 mm SVL, 497-849 mean 632 mm total length; 8 males 487-692, mean 593 mm SVL, 601-886, mean 747 mm total length), Cox et al. 2012 (adults average 500-700 mm TL, males max 821 mm, females to 677 mm, but weirdly max 975 mm, neonates 120-200 mm)
snakes only in this source
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- How it hunts
- Sit and wait
- Active
- Nocturnal
- Where it lives
- Arboreal
- Habitat
- Forest
- Biome
- Tropical & Subtropical Moist Broadleaf Forests
- Region
- Oriental
- Mainland or island
- Mainland
- Elevation · above sea level
- 450–2000m
- Range size
- 896,852km²
frogs, birds, lizards, small mammals (Wang et al. 2023), mammals frogs and lizards (Cox et al. 2012)
Wang et al. 2023
(O'Shea 2018, Cox et al. 2012))
(O'Shea 2018, Maury et al. 2022), Cox et al. 2012 (arboreal but found foraging on the ground)
600-2000 (O'Shea 2018), 450-1300 (Maury et al. 2022), 790-1500 (Cox et al. 2012)
Breeding
- Reproduction
- Viviparous
- Average clutch
- 11eggs
- Eggs or young per clutch
- 1–15eggs
- Mean clutch
- 11eggs
Feldman et al. 2015, Cox et al. 2012
mean 11 (Scharf et al. 2015), 1-15 (Whitaker and Captain 2004), 7-15 (O'Shea 2018), 2-12 (Cox et al. 2012)
Naming and history
- Suborder
- Serpentes
- Infraorder
- Alethinophidia
- Subspecies
- No
- Described by
- Smith
- Moved to another genus · since it was first described
- No
- Described in
- 1937
- Type locality
- India
Keeping one
2 ft 7 in × 20.5 in × 5 ft 2 in(79 × 53 × 158 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes snakes as a fraction of total length: 0.75 × 0.5 × 1.5.
Lives in vegetation, so height and climbing structure matter more than floor space.
Mindestanforderungen an die Haltung von Reptilien (Sachverständigengutachten), German Federal Ministry for Nutrition, Agriculture and Forestry, Animal Welfare Division, 10 January 1997. The standard states these floor areas are recommendations rather than binding limits.
From this animal’s own total length of 3 ft 5 in (1050 mm), at 0.75 × 0.5 × 1.5 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Pope’s Tree Viper. Rather than repeat a number from a care sheet, this page leaves it out.
Feeding
A prey item should be between the same width as the widest part of the snake's body and about 1.5 times that width.
Widely used across snake husbandry references. An alternative formulation gives prey at 10-15% of the snake's body mass. This is established practice, not a measurement.
27kJ per day
Worked out for an animal of 254 g, the heaviest recorded for Pope’s Tree Viper — so it is the top of the range, not a figure for a particular animal. Weigh yours and the number will be lower.
An upper estimate, not a feeding target, and not veterinary advice. The equation covers only what an animal burns staying alive, so a growing, gravid or recovering animal needs more — and it was measured on wild animals, which move far more than one in an enclosure. Body condition and a vet who knows the species are what a feeding decision should rest on. Where this comes from.
What nobody knows
These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.
- — Length snout to vent · adult male mean
- — Length snout to vent · adult mean
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest female · snout to vent
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Hatchling length · snout to vent
- — Largest juvenile · snout to vent
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Body mass · adult female, mean
- — Body mass at hatching
- — Preferred body temperature · chosen in a laboratory gradient
- — Body temperature when active · measured in the wild
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How the young develop
- — Gestation or incubation
- — Clutches in a year
- — Clutches a year · fewest
- — Clutches a year · most
- — First breeds from · youngest recorded
- — First breeds by · oldest recorded
- — Hatchling length · smallest recorded
- — Hatchling length · largest recorded
- — Age at first breeding · female
- — Mature from · youngest recorded
- — Mature by · oldest recorded
- — Size at maturity · smallest recorded
- — Size at maturity · largest recorded
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Pupil
- — Sex decided by
- — Population trend
- — Red List criteria
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
Others in Viperidae
Take this data
Everything on this page is available as data under CC BY 4.0 — use it freely, credit it, no permission needed.
This species as JSON · the whole dataset
Cite this page
The Reptile & Amphibian Encyclopedia (2026). Trimeresurus popeiorum. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/trimeresurus-popeiorum
@misc{trimeresurus_popeiorum_2026,
title = {Trimeresurus popeiorum},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/trimeresurus-popeiorum}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.
- Catalogue of Life (dataset 3LR), used under CC BY.