Laemostenus janthinusLaemostenus janthinus is a species in the beetle family Carabidae.SubspeciesLaemostenus janthinus coeruleus ''Laemostenus janthinus janthinus''DescriptionLaemostenus janthinus can reach a length of about. It is a nocturnal predator of other small arthropods.DistributionThis species can be found in Austria, Bosnia, Croatia, France, Italy, Poland, Slovenia and Switzerland.HabitatThis species inhabits forests and Alpine prairies at an elevation of 2000–2400 meters above sea level.