'Leonardo DiCaprio' snake with bright orange eyes discovered in Panama jungle

Located in the Chocó-Darién jungles of eastern Panama and western Colombia, the DiCaprio's snail-eating snake (Sibon irmelindicaprioae) is the rarest of these newly found snake species. (Image credit: Alejandro Arteaga)

Slithering among shrubs in the foothill forests of Panama, there is a snake the color of burnt embers, with round eyes like glowing coals. The snake, soon to be named DiCaprio's snail-eating snake (Sibon irmelindicaprioae), is one of five newfound species living in the jungles of Central and South America. In a new study, researchers described the new species and shed light on how gold and copper mining operations in the region may threaten other stunning snakes.

"These new species of snake are just the tip of the iceberg in terms of new species discoveries in this region," lead author Alejandro Arteaga (opens in new tab), president and research director at the Khamai Foundation, a conservation-focused nongovernmental organization, said in a statement (opens in new tab). "But if illegal mining continues at this rate, there may not be an opportunity to make any future discoveries."

S. irmelindicaprioae derives its name from actor and conservationist Leonardo DiCaprio, who asked that the red-eyed snake be named for his mother, Irmelin Indenbirken. DiCaprio's eponymous snake is about 15 inches (38 centimeters) long, and spends its evenings on palm fronds 10 feet (3 meters) above the ground, foraging for snails and slugs. Docile to a fault, the snake defends itself not by biting but by coiling protectively around its head and emitting a foul odor.

The other four newfound species described in the study, published Jan. 25 in the journal ZooKeys (opens in new tab), are the canopy snail-eating snake (Sibon canopy), Marley's snail-eating snake (Sibon marleyae), Vieira's snail-eating snake (Sibon vieirai), and Welborn's snail-eating snake (Dipsas welborni).

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t=e&&e.__esModule?()=>e.default:()=>e;return r.d(t,{a:t}),t},r.d=(e,t)=>{for(var n in t)r.o(t,n)&&!r.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]})},r.g=function(){if("object"==typeof globalThis)return globalThis;try{return this||new Function("return this")()}catch(e){if("object"==typeof window)return window}}(),r.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),r.r=e=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})};var n={};(()=>{"use strict";r.d(n,{default:()=>e});const e={hydrate:function(e,t){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:function(){},i=r(6651),s=r(2081),o=r(2986),a=o.default;return s.hydrate(i.createElement(a,e),t,n)}}})(),imageGallery=n.default})(); window.sliceComponents.imageGallery = imageGallery; var triggerHydrate = function() { window.sliceComponents.imageGallery.hydrate(data, componentContainer); } if (window.lazyObserveElement) { window.lazyObserveElement(componentContainer, triggerHydrate); } else { triggerHydrate(); } } }).catch(err => console.log('Hydration Script has failed for imageGallery-6 Slice', err)); }).catch(err => console.log('Externals script failed to load', err)); Image 1 of 4This is the canopy snail-eating snake (Sibon canopy) named in honor of the Canopy Family system of reserves. It is one of the new species of snake discovered in the jungles of Central and South America. (Image credit: Alejandro Arteaga)Marley's snail-eating snake (Sibon marleyae) was discovered in the most humid and pristine Chocó rainforests of Ecuador and Colombia. This snake is named about the daughter of conservationist Brian Sheth. (Image credit: Eric Osterman)The Vieira's snail-eating snake (Sibon vieirai) coloring is much darker than the others. (Image credit: Pearl Ee)The Welborn's snail-eating snake (Dipsas welborni) is the namesake of David Welborn, former member of the board of foundation Nature and Culture International. (Image credit: Alejandro Arteaga)

To identify the new species, Arteaga and colleagues built an evolutionary tree of Dipsadinae — a large and diverse subfamily of arboreal, terrestrial and aquatic snakes found in the Americas — after analyzing 343 sequences of snake DNA. The scientists determined that five species were sufficiently distinct from their closest relatives, in both appearance and genetics, to qualify as new species. DiCaprio's snake, for instance, does not immediately look much different from Siphonops annulatus, a fellow Dipsadine. But in addition to genetic differences, the two species have distinct coloring patterns along their backs and heads, among other telltale signs that they are not quite the same.

Unfortunately, most of these new snail-eating species face substantial challenges; the authors think that DiCaprio's snake already fits International Union for Conservation of Nature criteria for "near-threatened," as gold and copper mining operations are ravaging the rainforests the snakes call home. All five snake species are arboreal, which means they cannot survive in deforested areas, and all rely on a steady diet of slugs and snails that are in decline due to mining-related pollution in streams and rivers, according to the statement.

Illegal gold mining activities taking place in Napo province, Ecuador are a threat to tree-dwelling snakes. (Image credit: Ivan Castaneira)Related stories

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In Ecuador and Colombia, the challenge is largely illegal open-pit gold mines (opens in new tab), which sprung up recently in response to a regional gold rush that has led to violence against park rangers and conservationists who stand in the way of deforestation. "When I first explored the rainforests of Nangaritza River in 2014, I remember thinking the place was an undiscovered and unspoiled paradise," Arteaga said. "In fact, the place is called Nuevo Paraíso [New Paradise] in Spanish, but it is a paradise no more. Hundreds of illegal gold miners using backhoe loaders have now taken possession of the river margins, which are now destroyed and turned into rubble."

In Panama, where DiCaprio's snake lives, the problem is legal copper mining. 

"Both legal and illegal open-pit mines are uninhabitable for the snail-eating snakes," Arteaga said, "but the legal mines may be the lesser of two evils. At the very least they respect the limit of nearby protected areas, answer to a higher authority, and are presumably unlikely to enact violence on park rangers, researchers, and conservationists."