Scolytus rugulosus
Pest description and damage The adult shothole borer is a brownish-black beetle about 0.08 inch long. The larvae are white, legless, and about 0.16 inch long. When the numerous beetles emerge, the bark takes on a shothole appearance. These beetles are primarily a problem on injured or stressed plants, but healthy trees growing adjacent to blocks of neglected trees are attacked.
For biology, life history, monitoring and management
See "Bark beetle" in:
Management-chemical control
See Table 4 in:
Chemical Control of Landscape Pests
For more information
Doerr, M. and P. VanBuskirk. 1993. Shothole Borers. WSU Orchard Pest Management Online (http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=530)