A species with an extremely limited range, living in a place growing hotter and drier
In the high Andes of northwestern Argentina, scientists have given a name to something ancient and previously unknown — a small gecko, patterned like stone, living above 3,000 meters where few reptiles dare. Named Homonota chelemini after a 17th-century indigenous leader who died defending his people's land, the species arrives into scientific consciousness already imperiled, surrounded by mining operations, a warming climate, and no protected land whatsoever. Its discovery is both a gift and a warning: that life continues to surprise us in the places we have barely looked, and that the window to protect what we find is closing before we have finished looking.
- A gecko hidden in plain sight for millennia has finally been seen — genetic sequencing revealed it as an entirely independent lineage, not a variant of anything known to science.
- The species exists in one of South America's most biodiverse yet least-studied regions, raising urgent questions about how many other undescribed creatures share its precarious altitude.
- Six active mining projects, including lithium extraction, operate within 50 kilometers of the gecko's habitat, and not a single protected area exists anywhere in the region.
- Declining rainfall since the 1980s and rising temperatures are already reshaping the high desert, and high-altitude species like this gecko have nowhere higher left to go.
- The research team's formal publication in Zoologica Scripta is not just a scientific milestone — it is the legal and institutional foundation without which no conservation protection can be built.
- The choice to name the gecko after an executed indigenous resistance leader transforms a taxonomic act into a statement: the fight to protect territory, then and now, is the same fight.
In the high deserts of northwestern Argentina, researchers from Conicet and the National University of Patagonia spent months combing barren slopes above 3,000 meters in Catamarca and La Rioja provinces. What they brought back from that extreme terrain turned out to be something entirely new to science — a small, gray gecko whose reticular pattern renders it nearly invisible against rock and scrub, but whose DNA revealed an independent lineage found nowhere else in South America.
The team named it Homonota chelemini, after Juan Chelemín — the Tiger of the Andes, a 17th-century Diaguita leader who resisted Spanish colonization and was executed as a public warning. The naming was deliberate: a gesture of remembrance, and an argument that defending territory across centuries is a single, continuous struggle. The gecko's discovery also confirms what researchers have long suspected about the Diaguita District — that this biodiverse, endemic-rich region harbors species science has never catalogued, creatures whose ecological roles remain entirely unknown.
But the gecko bearing Chelemín's name faces immediate peril. High-altitude species are geographically trapped; there is no higher ground to retreat to as temperatures rise. The region has seen declining rainfall since the late 1980s, and six active mining projects — including two lithium operations — function within 50 kilometers of the discovery site. No protected areas exist anywhere in the region.
The act of formally describing and naming a species, published in Zoologica Scripta, is the indispensable first step toward legal protection — without it, there is no policy framework, no conservation argument, no mechanism to limit industrial damage. The research also deepens understanding of how geological history and past climate shifts shaped life in South America's arid zones, offering tools to anticipate how current threats will unfold. The discovery is a beginning. Whether it becomes anything more depends on how quickly the window for action can be held open.
In the high deserts of northwestern Argentina, where wind and cold define the landscape, scientists have identified a gecko that no one knew existed. The creature is small, gray, patterned in a way that dissolves it into stone and scrub. It lives above 3,000 meters in the mountains of Catamarca and La Rioja provinces, in terrain so extreme that few reptiles venture there at all. Researchers from Argentina's Conicet institute and the National University of Patagonia spent months searching these barren slopes, collecting specimens and bringing them to the laboratory, where genetic sequencing revealed something unexpected: this gecko was not a variant of a known species. It was entirely new to science.
They named it Homonota chelemini—the gecko of Chelemín—after Juan Chelemín, a 17th-century indigenous leader of the Diaguita people who resisted Spanish colonization and the theft of his people's lands. Chelemín, known as the Tiger of the Andes, was executed and displayed as a warning. The scientists chose his name deliberately, as an act of remembrance and as a statement that the struggle to protect territory—whether waged centuries ago or now—remains inseparable from the work of conservation. The gecko's smooth scales and reticular gray pattern make it nearly invisible to the naked eye, but its DNA tells a different story. It belongs to an independent lineage found nowhere else in South America, a branch of the Homonota genus that diverged long enough ago to become its own thing.
The Diaguita District, where this gecko lives, is one of the most biodiverse and endemic-rich regions of the Southern Cone, yet it remains critically understudied. Mariana Morando, the lead biologist on the team, explained to reporters that finding a new species here confirms what researchers have long suspected: there are creatures in these mountains that science has never catalogued, species whose genetic potential and ecological roles remain unknown. The discovery matters not just for what it reveals about the gecko itself, but for what it suggests about everything else that might be hiding in the high places of the Andes, waiting to be found before it vanishes.
But the gecko that bears Chelemín's name now faces its own battle for survival. High-altitude species are trapped by their own geography. When temperatures rise, they cannot simply move higher indefinitely. The Diaguita District has already experienced declining rainfall since the late 1980s, a trend that is expected to worsen. Within a 50-kilometer radius of where the gecko was discovered, six active mining projects operate, two of them extracting lithium. There are no protected areas in the entire region. The combination is brutal: a species with an extremely limited range, living in a place growing hotter and drier, surrounded by industrial extraction with no legal refuge.
The act of naming and describing a species is not merely academic. It is the first legal and scientific step toward protection. Without a name, without a formal description published in a peer-reviewed journal, there can be no conservation policy, no legal argument for setting aside habitat, no framework for limiting the damage. The research team's work, published in Zoologica Scripta, provides that foundation. It also offers something deeper: by understanding how geological processes and past climate shifts shaped the evolution of geckos in South America's arid regions, scientists can better anticipate how current threats will unfold and what interventions might help species survive the changes ahead. Each new species described is another piece of the puzzle of how life diversifies and adapts. But the window for learning these lessons, and for acting on them, is narrowing fast.
Citas Notables
The Diaguita District is one of the hotspots of biodiversity and endemism in the Southern Cone, but it is critically understudied. Finding a new gecko species there confirms that hidden diversity is still waiting to be discovered.— Mariana Morando, biologist, Conicet
Describing a species is the first legal and scientific step to protect it. Without a name, conservation policy is impossible.— Mariana Morando
La Conversación del Hearth Otra perspectiva de la historia
Why name a newly discovered species after a historical figure rather than, say, the place where it was found?
Because the place and the figure are inseparable. Chelemín fought to defend that territory against colonization. Naming the gecko after him connects the ancient struggle for land to the modern struggle to protect it. It's not sentimental—it's a statement that conservation is about more than biology.
The gecko is already threatened, and we just found it. How does that happen?
It was always threatened. We just didn't know it existed. The mining projects, the climate shifts—those have been happening for decades. We're discovering species at the exact moment when the conditions that allowed them to evolve are collapsing.
You mentioned that high-altitude species can't move higher. Why is that such a problem?
Because altitude is their only escape route from heat. As temperatures rise, they retreat upward. But there's a ceiling. Eventually, there's nowhere left to go. For a gecko living at 3,250 meters, that ceiling is very close.
Six mining projects in 50 kilometers sounds like a lot. What are they actually doing to the habitat?
Mining requires water, creates dust, fragments the landscape. In an arid region that's already drying out, that's catastrophic. And lithium mining is particularly water-intensive, which matters in a place where precipitation is already declining.
Does naming the species give it any legal protection?
It's the first step. You can't protect something that doesn't officially exist. But naming it doesn't stop the mining or reverse the climate. It just makes it possible to argue, legally and scientifically, that this species deserves protection.
What happens if the gecko disappears before anyone studies it further?
We lose a piece of evolutionary history we'll never recover. We lose genetic information that might have been useful for understanding how species adapt to extreme conditions. And we lose the chance to learn what else might be living in those mountains that we haven't found yet.