Home
SEE TRIPS
  • Top Destinations
PLAN MY VISIT →
  1. Home
  2. Flora & Fauna
  3. Reptile

Fer-de-Lance

Fer-de-Lance (Bothrops asper) Spanish Name: Terciopelo

Fer-de-Lance
Fer-de-Lance
Fer-de-Lance
Fer-de-Lance
Fer-de-Lance
Fer-de-Lance
Fer-de-Lance
←→
  • Sightings

  • La Selva Biological Station
    Corcovado National Park
    Chirripo National Park
    Carara National Park
    Palo Verde National Park
    Tortuguero National Park

    Habitat
    Widely adapted and common, the terciopelo is no stranger to lowland moist and wet forests and premontane moist, wet, and rainforest. It is less common through dry forest zones, although it may persist along rivers through such forest. In human-controlled areas where rat populations have done well, this viper is not shy. Banana plantations are a particular haunt of the terciopelo because of their rats.

    Range
    It can be found on the Pacific coast from some parts of Mexico down to Ecuador; on the Atlantic coast, down to Colombia.

    Physical Description
    This snake can grow to a large size as an adult, but has a distinct coloration pattern both as a juvenile and adult. Pale yellow or cream-colored bands crisscross the back and sides of the body, making spaces for a dark diamond pattern. The luster of these dark triangles is velvety, and the triangles connect slightly on the back which some describe as a butterfly or hourglass pattern. The head is large, triangularly shaped, and conspicuously wider than the neck. This pit viper has the deep, visible, heat-detecting pit between each eye and nostril. The eyes are large and have a vertical pupil. The scales along the head and back are keeled.

    Biology and Natural History
    This infamous viper’s large size, long fangs, and high venom production and toxicity are paired with an active and edgy disposition, making it one of the most dangerous creatures one can encounter in Latin America. It is the most dangerous snake in Central America and causes the most snakebite-related deaths among humans in countries like Costa Rica. Venom from this species contains an anticoagulant and causes hemorrhaging.

    This nocturnal serpent is more active on the ground as an adult, but as a juvenile may function during the day and on low vegetation. Younger terciopelos have a yellow-tipped tail to draw the attention of frogs or lizards before ambushing them. Prey size increases as the individual snake grows larger.It passes the day coiled up and hidden in vegetation; at dusk it will hunt along roads or trails through dense grass and forest. It is not afraid of human dwelling areas. When it feels agitated, the fer-de-lance may vibrate its tail—the buzz is audible—before striking. It moves quickly when threatened. Other large vipers are more inclined to escape when they feel attacked, but the terciopelo is more likely to strike. It produces a lot of venom, so it is less reserved with this defense as other snakes.

    Female terciopelos give birth to live young (as opposed to eggs) in litters of fewer than 10 to larger than 80 small snakes at a time.

    Diet
    Juveniles prey on arthropods, frogs, lizards, or other small vertebrates. Adults upgrade their diet to small mammals, such as rodents and opossums, and occasionally birds of an appropriate size depending on the snake.

    Height/Weight
    The full length of this snake can be more than 2 m; females are able to reach slightly longer body lengths than males.

    Taxonomy
    Order: Squamata
    Family: Viperidae

    Sources
    Leenders, Twan. A Guide to Amphibians and Reptiles of Costa Rica. Zona Tropical, S.A, Miami, FL, 2001.

    Savage, Jay M. The Amphibians and Reptiles of Costa Rica: A Herpetofauna between two Continents, between Two Seas. The University of Chicago Press, Chicago, 2002.

    Scott, N. J. in: Janzen, Daniel H. Costa Rican Natural History. Chicago: University of Chicago Press, 1983.

    -Amy Strieter, Wildlife Writer

  • Similar Profiles

  • Leatherback Turtle
    Spectacled Caiman
    Green Turtle
    Spiny Green Lizard
    Narrow-headed Vine Snake
    Ground Anole
    Green Iguana
    Hawksbill Sea Turtle
    Loggerhead Sea Turtle
    American Crocodile
    Boa Constrictor
    Common Basilisk
    Zopilota
    Olive Ridley Sea Turtle
    Black Ctenosaur
    Central American Bushmaster, Reptile - Vertebrate
    House Gecko
    Excellent!
    Trustpilot Rating
    Based on 705 reviews
    Trustpilot
    Will use them again!
    Communicative, helpful and honest. They stuck to my budget and accommodated my changes. My kids and I had such a good ti...
    Dec 01, 2022
    – Kayla C.
    Trustpilot Rating
    100 Stars!!
    If I could give 100 stars, I would wholeheartedly. All the booked activities were excellent and pricing was unbeatable. ...
    Nov 30, 2022
    – Ravi D.
    Trustpilot Rating
    One of the best I have ever used
    Having traveled a lot, I have used many travel companies. The responsiveness and efforts to meet our needs were unmatche...
    Dec 08, 2022
    – A. Hershe.
    Trustpilot Rating
    Above & Beyond in Thailand, Vietnam, Cambodia, & Laos
    Thank you to the entire team that made this trip so memorable for us. We appreciate your warmth and going above and beyo...
    Jun 20, 2022
    – Sapna
    Trustpilot Rating
    Best way to travel!
    I trusted Harold from Anywhere.com to plan my family's vacation. Harold went above and beyond in making sure that our tr...
    Oct 04, 2021
    – Shivani P.
    Trustpilot Rating
    Profesionalism at its Best
    My experience with Anywhere.com in Costa Rica was perfection. All of the drivers were punctual and pleasant; and all of ...
    Aug 02, 2021
    – Natasha I.
    Trustpilot Rating
    Anywhere is OUTSTANDING!
    My family & I have used Anywhere to organize 3 vacations- Costa Rica, Peru, & now Ecuador. I would not hesitate to use t...
    Jul 29, 2021
    – Kara V.
    Trustpilot Rating
    Awesome vacation, everything went smoothly
    Our agent (Erick) planned a great trip for our family of 5. All the tours were excellent, all the transport and lodging ...
    Mar 17, 2020
    – David
    Trustpilot Rating
    Everything Anywhere said they would do…
    Everything Anywhere said they would do they did. Very professional and friendly staff.
    Mar 16, 2020
    – Darrell
    Trustpilot Rating
    We were very reassured in constructing…
    We were very reassured in constructing our trip using Anywhere.com as the team responded promptly to our questions in a ...
    Mar 16, 2020
    – Michael
    Trustpilot Rating
    Great service!
    Great service!
    Mar 15, 2020
    – Kyle K
    Trustpilot Rating
    If I could give 100+stars, I would.
    If I could give 100+stars, I would.
    Mar 15, 2020
    – Jerry Pos.
    Trustpilot Rating
    I gave Anywhere a 48hr turnaround time…
    I gave Anywhere a 48hr turnaround time before our departure to provide an itineary based on what we already researched a...
    Mar 14, 2020
    – Thomas hi.
    Trustpilot Rating
    Anywhere.com was so easy to work with
    Anywhere.com was so easy to work with. They made booking my transfers a pleasant experience. And I even had some last ...
    Mar 14, 2020
    – Ashley Ba.
    Trustpilot Rating
    Perfectly planned
    Perfectly planned. The trip went off with all (5) transfers on time and all our accommodations meeting or exceeding our...
    Mar 14, 2020
    – John C.
    Trustpilot Rating

    Let's Dream Together

    Share your bucketlist to get inspiration and local connections.

    We care about the protection of your data. Read our Privacy Policy.

    Costa Rica Vacations
    • Adventure
    • All-inclusive
    • Beach
    • Budget
    • Eco-tourism
    • Family
    • Group
    • Honeymoon
    • Luxury
    • Nature
    • Private
    • Rainforest
    • Romantic
    Highlights
    • Top Destinations
    • Beaches
    • Rainforests
    • Cloudforest
    • Volcanoes
    • Waterfalls
    • Surfing
    • Leisure
    • Off the Beaten Path
    • Airports
    Costa Rica Travel
    • Maps
    • Safety
    • Weather & Climate
    • Sustainability
    • Holiday Season
    • Currency
    • Driving & Car Rental
    • Getting Around
    PLACES TO GO
    • Arenal Volcano & Hot Springs
    • Monteverde Cloudforests
    • Manuel Antonio Beach & Jungle
    • Tamarindo Beach
    • Santa Theresa & Malpais Beaches
    • Puerto Viejo Beach
    • Nosara Beach
    • Jaco Beach
    • Tortuguero Rainforest
    • Corcovado Rainforest
    • Rincon de la Vieja Volcano & Waterfall
    • Nicoya Peninsula
    • Guanacaste Beaches
    • Osa Peninsula
    THINGS TO DO
    • Hot Springs
    • Zip Lines
    • Suspension Bridges
    • Horseback
    • Rappel
    • Wildlife
    • Hiking
    • Chocolate Farms
    • Whitewater Rafting
    • Coffee Farms
    • Butterfly Gardens
    • Surfing
    • Sport Fishing
    • Birdwatching
    • Scuba Diving
    • Catamaran Cruise
    • Indigenous Culture
    • Yoga
    • Wellness
    • Cave Exploration
    Trustpilot 5 of 5 rated service
    Trustpilot "Excellent"
    Plan My Visit→+1 (888) 456-3212
    MessengerContact AnywhereWhatsapp ContactCall USA: +1-888-456-3212

    © 2023 Anywhere Inc. All rights reserved.Privacy Policy