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Squamata · ViperidaeEntry 20,504 of 21,572

Reptilia · Squamata

Trimeresurus ayeyarwadyensisChan, Anuar, Sankar, Law, Law, Shivaram, Christian, Mulcahy, Malhotra, 2023

Ayeyarwady pit viper

No photograph of this species exists under a license anyone may reuse. It gets the same page regardless.

A meat-eating snake from the Oriental region, reaching 101 cm nose to tail.

ReptiliaSquamataViperidaeTrimeresurus

We do not have enough on this species yet

Catalogue of Life records this animal’s name, its family and where it sits in the tree of life. Beyond that, only 16 facts are on record — no diet, no lifespan, nothing we would be willing to publish as an entry.

So this page waits here rather than pretending to be one. It is not listed and not submitted to search engines. If you know this animal and can point us at a published source, we would rather have it right than have it soon.

Grows to
1008.3mm
greatest recorded
Eats
Carnivorous
Weighs up to
527.8g
greatest
Body length across Viperidae

Longer than 67% of all vipers anyone has measured.

67% of 362 species are smaller33% larger
280 mmthe whole family, smallest to largest3,900 mm

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

16 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

The animal itself

Limbs
None

Size

Length snout to vent · greatest recorded
935mm3 ft 1 in

Chan et al. 2023 (8 males SVL 477.9 ± 23.6 range 432–500), 11 females 647.5 ± 177 range 459–935 mm mean tail length 128.3 in males 112.4 mm in females; holotype female total length of 1008.3 mm SVL 935 mm)

Length snout to vent · adult female mean
648mm2 ft 2 in
Length nose to tail · greatest recorded
1008.3mm3 ft 4 in

snakes only in this source

Female length · mean, nose to tail
759.9mm2 ft 6 in
Body mass · greatestcomputed
527.8g1.2 lb

computed from length by a family-level allometric equation, not weighed

How it lives

Dietcomputed
Carnivorous

no actual data but can be imputed as carnivorous like all snakes

Region
Oriental
Mainland or island
Mainland

Naming and history

Suborder
Serpentes
Infraorder
Alethinophidia
Described by
Chan, Anuar, Sankar, Law, Law, Shivaram, Christian, Mulcahy, Malhotra
Moved to another genus · since it was first described
No
Described in
2023
Type locality
Burma

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
  • Hatchling length · nose to tail
  • 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
  • Longest recorded life
  • Preferred body temperature · chosen in a laboratory gradient
  • Body temperature when active · measured in the wild
  • Eats arthropods
  • Eats vertebrates
  • Eats plant matter
  • How it hunts
  • Active
  • Where it lives
  • Reproduction
  • How the young develop
  • Gestation or incubation
  • Average clutch
  • Smallest clutch recorded
  • Largest clutch recorded
  • Mean clutch · smallest reported
  • Mean clutch · largest reported
  • 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
  • Venomous
  • Fangs
  • Body temp in the wild · lowest mean recorded
  • Body temp in the wild · highest mean recorded
  • Colour on the back
  • Pattern on the back
  • Pupil
  • Sex decided by
  • Conservation status
  • Status assessed · the year the Red List last looked
  • Population trend
  • Red List criteria
  • Biome
  • Active season · shortest recorded
  • Active season · longest recorded
  • Density · lowest recorded
  • Density · highest recorded
  • Home range · largest recorded
  • Subspecies
  • Habitat
  • Active in
  • Lowest it lives · above sea level
  • Highest it lives · above sea level
  • Range size

Others in Viperidae

Sources

  1. Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
  2. Catalogue of Life (dataset 3LR), used under CC BY.