Arachnids add metals like zinc and iron to their stingers and pincers to make them stronger and sharper, finds study.
Scorpions are the natural world’s original metalheads. Research from the Smithsonian’s National Museum of Natural History shows that these arachnids add metals like zinc and iron to their stingers and pincers to make them stronger and sharper.
In this study, 18 species were analyzed to determine how zinc, manganese, and iron are distributed within their built-in weapons, such as stingers and pincers.
“Scorpions are incredible hunters, and while we knew that metals strengthen the weapons in some species’ arsenals, we don’t know if all scorpions’ weapons contain metal, and if so, whether this metal enrichment relates to how they hunt,” said Sam Campbell, a graduate student fellow at the National Museum of Natural History. “We decided to use microanalytical techniques to unravel where and how these metals are distributed in the scorpions’ weapons to offer a clue as to how and why metal enrichment has been carried through the scorpion family tree,” Campbell added.
SE micrograph of the entire telson of the Tanzanian red bark scorpion. Credit: Sam Campbell/University of QueenslandMetal distributionLike their spider and tick cousins, scorpions are eight-legged arachnids. They hunt by snagging insects with their pincers and quickly arching their tails to deliver a venomous sting from the telson. Scorpions use a specialized weapon system that balances crushing pincers and venomous stingers according to their specific hunting styles and defensive needs.
While some species rely on massive claws to overpower prey, others use aggressive stinging, leading researchers to believe that these behavioral patterns are directly reflected in how metals are distributed to support each weapon. Tools such as advanced electron microscopy and X-ray analysis helped identify the specific areas that require metal reinforcement to withstand the most pressure.
Surprisingly, it was found that stingers use a distinct layering of zinc at the tip, followed by manganese, while pincers are reinforced with zinc and iron specifically along their cutting edges.
“The microscopic-scale methods we used allowed us to identify individual transition metals in extremely high detail, showing us how nature skillfully engineered these metals in the scorpion’s weapons,” said Edward Vicenzi, research scientist at the Museum Conservation Institute and a co-author on the study. Micro X-ray fluorescence microscopy of the metals present the stinger of an emporer scorpion. Credit: E.P. Vicenzi/Smithsonian Museum Conservation Institute and NISTRole of iron The study’s most surprising twist involves the role of iron.
Contrary to expectations, researchers found that iron is more prevalent in long, slender pincers than in thick, crushing ones. Slender claws are prone to snapping. Hence, iron likely provides the structural integrity needed to hold struggling prey long enough for the venom to take effect. This discovery shows a clear evolutionary link between a species’ hunting behavior and its specific metal recipe.
Using the Smithsonian’s vast collections and advanced microanalytical techniques, the team has created a blueprint for studying metal enrichment across the broader tree of life. This research offers a new lens through which to view the evolution of arthropods — like spiders, ants, and bees — and how they have adapted their biology to survive as both predators and prey. The findings were published in the Journal of the Royal Society Interface on April 28.
Biology Built-In Weapons Iron Metal Pincers Scorpions Stingers Zinc
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
China develops iron battery 80 times cheaper than lithium that can last 16 yearsA research team at the Institute of Metal Research of the Chinese Academy of Sciences (CAS) has advanced 'all-iron' flow battery technology.
Read more »
Enterprise Police Arrest 6 in Online Child-Solicitation Sting, Operation INTERCEPTEnterprise PD Targets Online Predators in Two-Day Sting, 6 Arrested.
Read more »
Scientists tweak metals at atomic level to tune electronic properties preciselyA new study reveals how nanometer-scale thickness and interfacial polarization can control metal electronics without changing composition.
Read more »
Las Vegas’ Sick New World Meets the Metal MomentSick New World returned to Las Vegas on April 25 after a one-year hiatus, delivering heavy festival sets by System of a Down, Korn, Ministry and more.
Read more »
Why Metal Frame Sunglasses Are Suddenly Everywhere AgainThin metal sunglasses, aviators and minimalist frames are defining the biggest eyewear trend for summer 2026.
Read more »
Sting’s Former Manhattan Penthouse With Central Park Views Lists for $45 MillionThe British rocker acquired two units at Central Park West in 2008 for $27 million and combined them into a custom duplex before selling in 2017.
Read more »