These new critters are part of the intraorder Mygalomorphae, which includes the beefier eight-legged species such as tarantulas and trapdoor spiders. Like their peers, Stormtropis display “cryptic habits,” according to their discoverers. This not only means they’re mysterious (they certainly are), but that they literally cloak themselves in soils—a camouflaging phenomenon known as crypsis. One of the most interesting facets of the wee stormtroopers’ anatomy is the way their cuticles (spiders’ skin-like exoskeletons) adhere to dirt particles, enabling them to blend in with their environment. They also have a “controversial phylogenetic position,” meaning scientists still aren’t sure where to place them in the tree of life. But subsequent discoveries like these are sure to dig up some new information on these dirt-dwelling crawlers. After all, several of these specimens are holotypes—the preserved physical example against which scientists will judge all other members of their species for centuries to come.