six-spined engraver beetle

Ips sexdentatus (Boerner, 1767)

Identification, Biology, Control and Management Resources

Screening Aids for Exotic Bark Beetles in the Northeastern United States - USDA Forest Service
The Atlas of Forest Insect Pests - The Polish Forest Research Institute
Xilofág rovarok - Xylophagous insects - Hungarian Forest Research Institute
Data Sheets on Quarantine Pests - European and Mediterranean Plant Protection Organization
Exotic Forest Pest Information System For North America - North American Forest Commission