Six-eyed Sand Spider Sicarius thomisoides

This Chilean resident holds a unique place in spider science as the type species of the genus Sicarius—the reference point that defines its entire family. When arachnologists describe a new Sicarius species, they're comparing it to this one. But here's the twist: its name has been tangled in decades of confusion, with synonyms like Sicarius terrosus getting incorrectly applied to other species, creating a taxonomic headache. Despite its scientific importance, much remains mysterious about its behavior and ecology.