White-armored Stormtroopers in the "Star Wars" movies are practically identical and nearly impossible to tell apart. That uncanny similarity recently inspired a team of scientists who had discovered a new spider genus; the arachnids were so alike each other in size and markings that the researchers named them after the helmeted troops, calling the creatures Stormtropis.
These eight-legged Stormtroopers belong to a family dubbed bald-legged spiders, which are native to South America and Central America.
Like the Stormtroopers, the spiders "are very similar to each other, with some capacity for camouflage"; the sci-fi soldiers and the newfound spiders are also alike in being somewhat clumsy, according to the study. However, there is no evidence (yet) that the spiders, like their movie namesakes, are terrible at hitting moving targets with a blaster. [9 Animals with 'Star Wars'-Inspired Names]
Stormtroopers are a common sight across the Empire's conquered worlds in the "Star Wars" universe, and Colombia's bald-legged spiders turned out to be surprisingly numerous, too. Though the arachnids had never been reported in that country before, the study authors described two species in two previously known genera — Paratropis, Anisaspis — and four in the newfound Stormtropis genus. All the newly described species were scattered across a diverse range of habitats in Colombia.
Male Stormtropis spiders have just two claws on their feet, while other bald-legged spiders have three claws. Stormtropis males also lack the group's signature leg spines and have genitals that are more elongated. Female Stormtropis spiders' genitals have a tubular "neck" and an overall mushroom shape, which also differs from the typical shape found in bald-legged spiders.
Some of the newfound female spiders unexpectedly demonstrated a previously unknown behavior: digging burrows in soil, the researchers reported.
One Stormtropis species — S. muisca — was collected in the central Andes at an altitude of 11,155 feet (3,400 meters) above sea level, making that creature the highest-dwelling bald-legged spider species confirmed to date, the authors wrote.
However, S. muisca's cousins may live even higher than that. The scientists gathered evidence of other bald-legged spider species living at altitudes as high as 13,123 feet (4,000 m), but that data is yet to be published, according to the study.
The findings were published online today (March 14) in the journal ZooKeys.
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Originally published on Live Science.
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Mindy Weisberger is a Live Science editor for the channels Animals and Planet Earth. She also reports on general science, covering climate change, paleontology, biology, and space. Mindy studied film at Columbia University; prior to Live Science she produced, wrote and directed media for the American Museum of Natural History in New York City. Her videos about dinosaurs, astrophysics, biodiversity and evolution appear in museums and science centers worldwide, earning awards such as the CINE Golden Eagle and the Communicator Award of Excellence. Her writing has also appeared in Scientific American, The Washington Post and How It Works Magazine.