{"id":23485,"date":"2025-11-05T01:51:31","date_gmt":"2025-11-05T07:51:31","guid":{"rendered":"https:\/\/www.sensorialsunsets.com\/poisonous-snakes-of-costa-rica-2\/"},"modified":"2025-11-05T01:51:33","modified_gmt":"2025-11-05T07:51:33","slug":"poisonous-snakes-of-costa-rica-2","status":"publish","type":"post","link":"https:\/\/www.sensorialsunsets.com\/en\/poisonous-snakes-of-costa-rica-2\/","title":{"rendered":"Poisonous snakes of Costa Rica"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The study and identification of venomous snakes in Costa Rica is an essential part of the scientific work carried out by the Clodomiro Picado Institute (ICP). This internationally recognized research center is dedicated to studying the species present in the country, as well as the characteristics and composition of their venoms. The main objective is to develop <strong>antivenom serums or antivenoms<\/strong> that can effectively treat the effects of venomous snake bites.<\/p>\n\n<h3 class=\"wp-block-heading\">Diversity and classification<\/h3>\n\n<p class=\"wp-block-paragraph\">Costa Rica is home to an impressive diversity of reptiles, of which snakes represent about two-thirds. Of the 140 identified species, only 23 are considered venomous, belonging to two main families:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Elapidae<\/strong>, which includes one marine species (<em>Hydrophis platurus<\/em>) and five species of coral snakes of the gender <em>Micrurus<\/em>.<\/li>\n\n\n\n<li><strong>Viperidae<\/strong>, with 23 species distributed across eight genera (<em>Agkistrodon, Atropoides, Bothriechis, Bothrops, Cerrophidion, Crotalus, Lachesis<\/em>, and <em>Porthidium<\/em>).<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Snakes of the Viperidae family, commonly known as rattlesnakes, are distinguished by their triangular head, rough scales, and the presence of loreal pits, heat-sensitive structures that allow them to detect prey. For their part, the venomous coral snakes of the Elapidae family are smaller and thinner, and have a bright color pattern with red, yellow (or white), and black rings.<\/p>\n\n<h3 class=\"wp-block-heading\">The acronym R.A.N.A. and its educational value<\/h3>\n\n<p class=\"wp-block-paragraph\">In Costa Rica, the acronym R.A.N.A (Rojo-Amarillo-Negro-Amarillo, or red-yellow-black-yellow) has become popular as a mnemonic device to remember the order of the colored rings on venomous coral snakes of the genus Micrurus. This strategy aims to facilitate the identification of the most common species and differentiate them from <strong>false corals<\/strong>, harmless snakes that mimic their coloration.<\/p>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23458\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/Copia-de-Micrurus-mosquitensis.-Coral-costarricense.jpg\" alt=\"Poisonous snakes of Costa Rica\" class=\"wp-image-23458\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/Copia-de-Micrurus-mosquitensis.-Coral-costarricense.jpg 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/Copia-de-Micrurus-mosquitensis.-Coral-costarricense-300x188.jpg 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/Copia-de-Micrurus-mosquitensis.-Coral-costarricense-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Serpent corail d\u2019Allen<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23461\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image.png\" alt=\"\" class=\"wp-image-23461\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Central American coral snake<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23462\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-1.png\" alt=\"Poisonous snakes of Costa Rica\" class=\"wp-image-23462\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-1.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-1-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-1-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Serpent corail d\u2019Allen<\/figcaption><\/figure>\n<\/figure>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Although the acronym is not foolproof, it is useful for environmental education and accident prevention. Many species of false corals have similar patterns, and there are even true corals that do not follow the RANA pattern. Even so, its use as an educational resource <strong>encourages curiosity, recognition, and conservation<\/strong> of these species by inviting people to observe carefully before acting.<\/p>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"wp-block-heading\">Differences in the type of venom<\/h3>\n\n<p class=\"wp-block-paragraph\">Poisonous snakes in Costa Rica produce different effects depending on their family:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Corals (Elapidae)<\/strong> cause <strong>neurotoxic poisoning<\/strong>, which affects the nervous system.<\/li>\n\n\n\n<li>Viperidae cause myotoxic and hemotoxic poisoning, causing muscle damage and bleeding.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">Scientific contribution of the Clodomiro Picado Institute<\/h3>\n\n<p class=\"wp-block-paragraph\">Thanks to decades of research, the ICP has compiled a wealth of information on snakes and their venoms, which has enabled it to develop high-quality antivenoms that are exported to several countries. In addition, the Institute offers advice and technical support to medical and scientific entities around the world.<\/p>\n\n<h3 class=\"wp-block-heading\">Poisonous snakes found in Costa Rica<\/h3>\n\n<h4 class=\"wp-block-heading\"><strong>Elapidae family<\/strong><\/h4>\n\n<ul class=\"wp-block-list\">\n<li>Micrurus alleni \u2013 Allen\u2019s coral snake<\/li>\n\n\n\n<li>Micrurus nigrocinctus \u2013 Central American coral snake<\/li>\n\n\n\n<li>Micrurus mosquitensis \u2013 Mosquitia \/ Costa Rican coral snake<\/li>\n\n\n\n<li>Micrurus mipartitus \u2013 Red-banded \/ Red-tailed coral snake (many-banded coral)<\/li>\n\n\n\n<li>Micrurus clarki \u2013 Clark\u2019s coral snake<\/li>\n\n\n\n<li>Hydrophis platurus \u2013 Yellow-bellied (Pelagic) sea snake<\/li>\n<\/ul>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23468\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-4.png\" alt=\"Poisonous snakes of Costa Rica\" class=\"wp-image-23468\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-4.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-4-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-4-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Red-tailed coral snake<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23469\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-5.png\" alt=\"\" class=\"wp-image-23469\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-5.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-5-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-5-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Clark\u2019s coral snake<\/figcaption><\/figure>\n<\/figure>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h4 class=\"wp-block-heading\"><strong>Viperidae family<\/strong><\/h4>\n\n<ul class=\"wp-block-list\">\n<li>Porthidium volcanicum \u2013 Ujarran hognose pit viper (Costa Rican hognose pitviper)<\/li>\n\n\n\n<li>Porthidium porrasi \u2013 White-tailed hognose pit viper<\/li>\n\n\n\n<li>Porthidium ophryomegas \u2013 Slender (or Western) hognose pit viper<\/li>\n\n\n\n<li>Porthidium nasutum \u2013 Hognosed (rainforest \/ horned) pit viper<\/li>\n\n\n\n<li>Lachesis stenophrys \u2013 Central American bushmaster<\/li>\n\n\n\n<li>Lachesis melanocephala \u2013 Black-headed bushmaster<\/li>\n\n\n\n<li>Crotalus simus \u2013 Central American (or Middle American) rattlesnake<\/li>\n\n\n\n<li>Cerrophidion sasai \u2013 Costa Rica montane \/ Highland pit viper<\/li>\n\n\n\n<li>Bothrops asper \u2013 Terciopelo<\/li>\n\n\n\n<li>Bothriechis supraciliaris \u2013 Blotched (or Speckled) palm-pit viper<\/li>\n\n\n\n<li>Bothriechis schlegelii \u2013 Eyelash (palm) pit viper \/ Eyelash viper<\/li>\n\n\n\n<li>Bothriechis nubestris \u2013 Talamanca (Talamancan) cloud-forest palm-pitviper<\/li>\n\n\n\n<li>Bothriechis nigroviridis \u2013 Black-speckled (or black-spotted) palm-pit viper<\/li>\n\n\n\n<li>Bothriechis lateralis \u2013 Side-striped (or side-lined) palm-pit viper<\/li>\n\n\n\n<li>Atropoides picadoi \u2013 Costa Rican jumping pit viper<\/li>\n\n\n\n<li>Atropoides mexicanus \u2013 Central American (or Mexican\/Central) jumping pit viper<\/li>\n\n\n\n<li>Agkistrodon howardgloydi \u2013 Cantil \/ Gloyd\u2019s moccasin (Cantil pit viper)<\/li>\n<\/ul>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23465\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-2.png\" alt=\"Poisonous snakes of Costa Rica\" class=\"wp-image-23465\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-2.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-2-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-2-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Costa Rican hognose pitviper<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23466\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-3.png\" alt=\"Poisonous snakes of Costa Rica\" class=\"wp-image-23466\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-3.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-3-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-3-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Blotched (or Speckled) palm-pit viper<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" data-id=\"23470\" src=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-6.png\" alt=\"\" class=\"wp-image-23470\" srcset=\"https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-6.png 800w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-6-300x188.png 300w, https:\/\/www.sensorialsunsets.com\/wp-content\/uploads\/2025\/11\/image-6-768x480.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Serpiente de mar<\/figcaption><\/figure>\n<\/figure>\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\"><strong>Sensorial Sunsets<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The study and identification of venomous snakes in Costa Rica is an essential part of the scientific work carried out by the Clodomiro Picado Institute (ICP). This internationally recognized research center is dedicated to studying the species present in the country, as well as the characteristics and composition of their venoms. The main objective is [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":23484,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-23485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Poisonous snakes of Costa Rica - SensorialSunsets<\/title>\n<meta name=\"description\" content=\"Poisonous snakes of Costa Rica: discover the 23 species identified in the country, their classification in the Elapidae and Viperidae families\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sensorialsunsets.com\/en\/poisonous-snakes-of-costa-rica-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Poisonous snakes of Costa Rica - 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