Viperidae
Guifarro's Palm Pitviper
VenomousBothriechis guifarroi

The Guifarro's Palm Pitviper (Bothriechis guifarroi) is a venomous snake in the Viperidae family, recorded in 1 country.
If you are bitten
This is a venomous snake. Treat any bite as a medical emergency: stay calm, keep the bitten limb still and roughly level with the heart, remove rings and tight clothing, and get to emergency care immediately. Do not apply a tourniquet, cut the wound, apply ice, or try to suck out venom. Call your local emergency number or poison center.
- Family
- Viperidae
- Danger
- high
About the Guifarro's Palm Pitviper
Bothriechis guifarroi is a species of green palm pit vipers discovered in 2010 in the Texiguat Wildlife Refuge, in Northern Honduras. Bothriechis guifarroi joins two other species of the genus Bothriechis, B. marchi and B. thalassinus, found in the Chortís Highlands of Honduras.
Its color pattern and scalation is similar to other Honduran palm pitvipers, but genetic analysis reveals it to be more closely related to the B. lateralis and B. nigroviridis species more than 600 km to the southeast, in the mountains of Costa Rica and Panama.
Etymology
B. guifarroi was named after Honduran environmental activist Mario Guifarro. Guifarro was killed while on a conservation mission in the Tawahka territory of eastern Honduras in 2007.
Description
Adult B. guifarroi are brightly colored green, with a yellowish hue towards the ventral side. The juveniles have a green phase and a brown phase, before acquiring the adult coloration. The holotype (adult) measured 734 mm total length, with a tail length of 136 mm.
Distribution
The population of B guifarroi was found at elevations between 1015 m and 1450 m in western Cordillera Nombre de Dios, inside the Texiguat Wildlife Refuge, Honduras. More specifically, specimens were found in the Premontane Wet Forest and Lower Montane Wet Forest formations of Holdridge.
Habitat
B. guifarroi has been found in rainforest and cloud forests at elevations above 1000 m.
Status
The 2013 study describing the species recommended its immediate classification as Critically Endangered due to limited knowledge of its population and distribution, and potential for human reduction or degradation to its habitat. It also recommended immediate consideration for CITES protection, given its likely demand and exploitation by the pet trade.
Adapted from Wikipedia, available under CC BY-SA.
Frequently asked: Guifarro's Palm Pitviper
- Is the Guifarro's Palm Pitviper venomous?
- Yes. The Guifarro's Palm Pitviper (Bothriechis guifarroi) is venomous and belongs to the Viperidae family (viper). Its bite is considered high risk to people. Treat any bite as a medical emergency.
- Is the Guifarro's Palm Pitviper poisonous?
- Snakes are venomous, not poisonous. "Poisonous" means harmful to eat or touch; "venomous" means injecting toxins through a bite. The Guifarro's Palm Pitviper is venomous, delivering venom through a bite.
- Is the Guifarro's Palm Pitviper dangerous?
- This is a venomous snake. Treat any bite as a medical emergency: stay calm, keep the bitten limb still and roughly level with the heart, remove rings and tight clothing, and get to emergency care immediately. Do not apply a tourniquet, cut the wound, apply ice, or try to suck out venom. Call your local emergency number or poison center.
- Where does the Guifarro's Palm Pitviper live?
- The Guifarro's Palm Pitviper has verified records in 1 country, including Honduras. See the distribution section below for its full range.
- Why is it called the Guifarro's Palm Pitviper?
- B. guifarroi was named after Honduran environmental activist Mario Guifarro. Guifarro was killed while on a conservation mission in the Tawahka territory of eastern Honduras in 2007.
If you are bitten by the Guifarro's Palm Pitviper
Do
- Get away from the snake and stay calm. Most bites worsen when people panic or try again to handle the snake.
- Call 911 or Poison Control (1-800-222-1222) right away. Antivenom works best when given early.
- Note the time of the bite and, from a safe distance, the snake's color and pattern, a phone photo is enough. Do not chase it.
- Keep the bitten limb still and at roughly heart level. Sit or lie down and limit movement.
- Remove rings, watches, and tight clothing near the bite before swelling starts.
- Gently wash the bite with soap and water and cover it with a clean, dry dressing.
Do not
- Do not cut the wound or try to suck out the venom.
- Do not apply a tourniquet or ice.
- Do not drink alcohol or caffeine.
- Do not take aspirin or ibuprofen, they can worsen bleeding. Acetaminophen is safer for pain.
- Do not try to catch or kill the snake. A dead snake can still bite by reflex.
First-aid guidance adapted from the U.S. Centers for Disease Control and Prevention (CDC NIOSH), Venomous Snakes. Educational only; always follow the instructions of emergency responders.
Where it is found
More Viperidae snakes
Central American Eyelash-ViperBothriechis nigroadspersus
Side-striped palm pit viperBothriechis lateralis
Highland Eyelash-PitviperBothriechis schlegelii
Black-speckled Palm Pit ViperBothriechis nigroviridis
Ecuadorian Eyelash-ViperBothriechis nitidus
Blotched Palm-pitviperBothriechis supraciliaris
Yellow-blotched Palm Pit ViperBothriechis aurifer
March's Palm Pit ViperBothriechis marchi
Classification
How scientists group this snake, from the broadest category down to the exact species. Each step narrows to its closest relatives.
- OrderThe broad group of scaled reptiles: all snakes and lizards
- Squamata
- FamilyA group of related snakes that share key traits
- Viperidae
- GenusA close-knit group of very similar species
- Bothriechis
- SpeciesThis exact snake, named in the two-part scientific name
- Bothriechis guifarroi
Keep learning
- Are Snakes Dangerous? The Real Risk, in PerspectiveMost snakes are harmless and avoid people. Here is the honest picture of snakebite risk worldwide and how to lower your own.
- Snakebite First Aid: What to Do (and What Never to Do)A clear, CDC-based guide to snakebite first aid: the steps that help, the popular myths that hurt, and how to tell a serious bite from a minor one.
- Venomous vs Nonvenomous: How to Tell the DifferenceThe folk rules for telling venomous snakes apart, where each one fails, and why location-based identification beats guessing by sight.
- What to Do If You Find a SnakeFound a snake at home or on a trail? Here is how to stay calm, give it space, identify it safely, and know when to call a professional.
Distribution from GBIF & iNaturalist. Venom status per CDC. Background: Wikipedia. Informational only. Never handle a snake to identify it.