PetrobiusPetrobius is a genus of jumping bristletails in the family Machilidae. Many of these ancestral insects are restricted to rocky shorelines especially of northern Europe and America.SpeciesThe Global Biodiversity Information Facility lists: Petrobius adriaticus Petrobius artemisiae Petrobius brevistylis Petrobius canadensis Petrobius crimeus Petrobius imbricatus Petrobius lohmanderi Petrobius maritimus Petrobius montanus ''Petrobius ponticus''