Ips pini

Ips pini, also known as the pine engraver or North American pine engraver, is a species of typical bark beetle in the family Curculionidae native to North America. Its habitat is broadly distributed throughout the North American continent, extending from Canada and Alaska to northern Mexico, where it is primarily associated with coniferous forests and trees of smaller diameters, typically ranging from 12 to 20 cm. Ips pini populations are subcategorized by their geographic ranges and are primarily distinguished by how they produce the enantiomeric composition of ipsdienol, the major pheromone produced by males. The species is a vector for blue stain fungus, which colonizes the sapwood and disrupts the host tree's water transport system.

from Wikipedia