Phloephagous
Guides
Polygraphus
four-eyed fir bark beetles, polygraphus bark beetles
Polygraphus is a genus of bark beetles (Coleoptera: Curculionidae: Scolytinae) in the tribe Polygraphini. Species in this genus are phloephagous, feeding on the inner bark of coniferous trees, particularly fir (Abies) and spruce (Picea). The genus includes both native and invasive species, with Polygraphus proximus being the most economically significant due to its invasive spread across Russia and mass mortality impacts on fir forests. Members exhibit monogynous mating systems and produce species-specific stridulatory signals.