Tetropium fuscum is a relatively rare European Tetropium species developing in coniferous trees (Picea, Pinus). Larvae feed in dead wood of the hosts. In Central Europe the species prefers Picea. It is crepuscular and nocturnal but can easily be found on freshly felled trunks when inspected the ground facing parts of the trunks. Body length: 8 - 17 mm Life cycle: 1 year Adults in: June - July Host plant: coniferous trees (Picea, Pinus) Distribution: Europe, Russia The depicted beetle was collected by M.Rejzek on freshly felled trunks of Picea abies in Novohradské Mts. (South Bohemia, Czech Republic).