Elm (Ulmus)-Bark beetle


Elm bark beetle (Hylurgopinus rufipes)

Scolytus spp.

Pest description and damage Elm bark beetles are about 0.13 inch long and shiny brown or black. The larvae are white, legless, and about 0.16 inch long. Larvae and adults of both these species bore into the cambial and vascular tissues of trees, weakening them and causing wilting and dieback of individual stems and branches. Trunks and branches can be riddled with galleries. Beetles emerging from trees infected with Dutch elm disease infect the trees they attack next. Borers 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: