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Tag Archives: pit viper

Large-eyed Pit Viper

Cryptelytrops macrops

Venomous and Dangerous!

Large-eyed Pit Viper Trimeresurus macrops

Large-eyed Pit Viper found in Laos (photo courtesy of Gernot Vogel)

Large-eyed Tree Viper Cryptelytrops macrops

Another view of Large-eyed Pit Viper (photo courtesy of Gernot Vogel)

Large-eyed Pit Viper Trimeresurus macrops  Khao Yai Randy Ciuros

Large-eyed Pit Viper found in Khao Yai (photo courtesy of Randy Ciuros)

large-eyed green pit viper Cryptelytrops macrops

Large-eyed Pit Viper at Queen Saovabha Snake Farm

Trimeresurus macrops (Big-eyed viper)   Kevin Messenger Nakhon Ratchasima

Large-eyed Pit Viper found in Nakhon Ratchasima Province (photo courtesy of Kevin Messenger)

Large-eyed Pit Viper Cryptelytrops macrops (Big-eyed viper)   Kevin Messenger Nakhon Ratchasima

Another shot of Large-eyed Pit Viper (photo courtesy of Kevin Messenger)

Big-eyed Pit Viper Cryptelytrops macrops

Front view of Large-eyed Pit Viper (photo courtesy of Kevin Messenger)

Large-eyed Pit Viper Trimeresurus macrops

Large-eyed Pit Viper (photo courtesy of Tom Charlton, http://www.venomlogic.com)

Big-eyed Pit Viper Trimeresurus macrops

Large-eyed Pit Viper (photo courtesy of Tom Charlton, http://www.venomlogic.com)

Large-eyed Green Pit Viper Cryptelytrops macrops

Large-eyed Pit Viper (photo courtesy of Tom Charlton, http://www.venomlogic.com)

English name: Large-eyed Pit Viper (aka “Large-eyed Tree Viper”, “Large-eyed Green Pit Viper”, “Big-eyed Pit Viper”)
Scientific name:Cryptelytrops macrops (formerly Trimeresurus macrops)
Thai name: Ngu Kieo Hang-mi Ta To

Description: To 71cm long. A slender snake with a broad, somewhat short triangular head. Heat-sensing pits are located on the head between the nose and each eye. Body is dark green to bluish-green above and paler bluish-green to pale blue below. Head is green above and the lips and throat are bluish-green. Eyes are large and yellow to orange. Tail is reddish-brown.

Similar Species: White-lipped Pit Viper is white, yellowish, or pale green on the lips and throat and has a longer head and smaller eyes.
Mangrove Pit Viper is brown, gray, olive, or greenish-yellow and has dark blotches.
Golden Tree Snake has a narrower, non-triangular head and black markings.
Long-nosed Whip Snake is more slender and has a longer, narrower head that ends in a point.

Habitat: Can be found in forest, shrubland, plains, agricultural areas, and gardens. Usually found off the ground in trees or bushes but will also hunt on the ground at night.

Contribution to the ecosystem: Helps to control frog and lizard populations. Will occasionally eat small rodents and small birds as well. Provides food for birds of prey and larger snakes.

Danger to humans: The Large-eyed Pit Viper has a dangerous bite and should be taken seriously. Bites can result in intense pain, swelling, necrosis of flesh, and in some cases severe systemic bleeding. Fatalities are very rare but local damage can be lasting. Anyone who is bitten by a pit viper should be taken to the hospital as quickly as possible. See “Interesting facts” for more information.

Conservation status and threats: No known conservation threats.

Interesting facts: Southeast Asian Pit Vipers are not as deadly as the local cobras, kraits, and true vipers, but still can do some damage. The Large-eyed Pit Viper and White-lipped Pit Viper are together responsible for 40% of all snakebite hospitalizations in Thailand.

Thailand’s pit vipers have a “hemorrhagic” venom that causes pain, swelling, coagulopathy, and some tissue damage. In serious cases severe coagulopathy, internal bleeding, and necrosis of the flesh can develop. Pit Viper-specific antivenom is available and should be administered as soon as possible to relieve symptoms and decrease long-term effects.

If you or someone you are with is bitten by a Large-eyed Pit Viper, the most important steps are to:

1) Keep the victim calm, having them lie down with the bite mark below the heart if possible.
2) Take a picture of the snake to confirm identification for the hospital.
3) Get the victim to a hospital immediately where professional treatment can take place and antivenom can be given.

References:
Siam-Info: Crotalinae
Queen Saovabha Memorial Institute: Snake Farm
A national hospital-based survey of snakes responsible for bites in Thailand
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
Snake Bites and their Treatment
A Photographic Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and Thailand
A Field Guide to the Reptiles of South-East Asia
Snakes of Thailand and their Husbandry

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White-lipped Pit Viper

Cryptelytrops albolabris

Venomous and Dangerous!

White-lipped Pit Viper Cryptelytrops albolabris

White-lipped Pit Viper in Hong Kong (photo courtesy of Thomas Brown)

White-lipped Pit Viper Trimeresurus albolabris head shot

Head shot of White-lipped Pit Viper (photo courtesy of Thomas Brown)

Bamboo Pit Viper Cryptelytrops albolabris

White-lipped Pit Viper in grass in Hong Kong (photo courtesy of Thomas Brown)

Yellow-lipped Green Pit Viper Cryptelytrops albolabris

White-lipped Tree Viper from southern Thailand (photo courtesy of Maik Dobiey)

White-lipped Tree Viper Cryptelytrops albolabris

White-lipped Pit Viper in Krabi Province (photo courtesy of Tom Charlton, http://www.venomlogic.com)

Bamboo Viper Trimeresurus albolabris

White-lipped Tree Viper from Krabi Province (photo courtesy of Tom Charlton, http://www.venomlogic.com)

Yellow-lipped Green Pit Viper Cryptelytrops albolabris head

Head shot of White-lipped Tree Viper (photo courtesy of Maik Dobiey)

White-lipped Pit Viper (Cryptelytrops albolabris, formerly Trimeresurus albolabris)

White-lipped Pit Viper in Hong Kong (photo courtesy of Kevin K. Caldwell)

White-lipped Pit Viper (Cryptelytrops albolabris, formerly Trimeresurus albolabris)

Another White-lipped Pit Viper in Hong Kong (photo courtesy of Kevin K. Caldwell)

White-lipped Pit Viper (Cryptelytrops albolabris, formerly Trimeresurus albolabris) head shot

Head shot of White-lipped Pit Viper (photo courtesy of Kevin K. Caldwell)

English name: White-lipped Pit Viper (aka “White-lipped Tree Viper”, “Yellow-lipped Green Pit Viper”, “Bamboo Viper”)
Scientific name:Cryptelytrops albolabris (formerly Trimeresurus albolabris)
Thai name: Ngu Kieo Hang-mi Tong Loeng

Description: To 104cm long. A slender snake with a broad triangular head. Heat-sensing pits are located on the head between the nose and each eye. Body is green above and much paler green or yellowish below. Head is green above and the lips and throat are white, yellow, or pale green. Eyes are orangish-yellow. Tail is brown.

Similar Species: Large-eyed Pit Viper is blueish-green on the lips and throat and has a stouter head and larger eyes.
Mangrove Pit Viper is brown, gray, olive, or greenish-yellow and has dark blotches.
Golden Tree Snake has a narrower, non-triangular head and black markings.
Long-nosed Whip Snake is more slender and has a longer, narrower head that ends in a point.

Habitat: Can be found in forest, shrubland, plains, agricultural areas, and gardens. Usually found off the ground in trees or bushes.

Contribution to the ecosystem: Helps to control frog and lizard populations. Will occasionally eat small rodents and small birds as well. Provides food for birds of prey and larger snakes.

Danger to humans: The White-lipped Pit Viper has a dangerous bite and should be taken seriously. Bites can result in intense pain, swelling, necrosis of flesh, and in some cases severe systemic bleeding. Fatalities are very rare but local damage can be lasting. Anyone who is bitten by a pit viper should be taken to the hospital as quickly as possible.

Conservation status and threats: No known conservation threats. Is widespread and can tolerate a range of habitats.

Interesting facts: Southeast Asian Pit Vipers are not as deadly as the local cobras, kraits, and true vipers, but still can do some damage. The White-lipped Pit Viper is the leading cause of snakebite-related hospitalization in Thailand, and along with the Large-eyed Pit Viper is responsible for 40% of all snakebite hospitalizations in the country.

Thailand’s pit vipers have a “hemorrhagic” venom that causes pain, swelling, coagulopathy, and some tissue damage. In serious cases severe coagulopathy, internal bleeding, and necrosis of the flesh can develop. Pit Viper-specific antivenom is available and should be administered as soon as possible to relieve symptoms and decrease long-term effects.

If you or someone you are with is bitten by a White-lipped Pit Viper, the most important steps are to:

1) Keep the victim calm, having them lie down with the bite mark below the heart if possible.
2) Take a picture of the snake to confirm identification for the hospital.
3) Get the victim to a hospital immediately where professional treatment can take place and antivenom can be given.

References:
IUCN Redlist: Cryptelytrops albolabris
Severe coagulopathy associated with white-lipped green pit viper bite
A national hospital-based survey of snakes responsible for bites in Thailand
Siam-Info: Crotalinae
Queen Saovabha Memorial Institute: Snake Farm
Wikipedia: Trimeresurus albolabris
University of Hong Kong: Cryptelytrops albolabris
Ecology Asia: White-lipped Pit Viper
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
Snake Bites and their Treatment
A Photographic Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and Thailand
A Field Guide to the Reptiles of South-East Asia
Snakes of Thailand and their Husbandry

 

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