Cave-millipede
Guides
Macrosternodesmidae
Macrosternodesmidae is a family of flat-backed millipedes in the order Polydesmida, primarily distributed in western North America with some European representatives. The family contains approximately 9 genera and 16 described species, though taxonomic status remains disputed—some authorities treat it as a junior synonym of Trichopolydesmidae, while others recognize it as valid with two subfamilies: Macrosternodesminae and Nearctodesminae. Many species are troglobionts restricted to cave systems.