The gold spotted oak borer beetle, Agrilus coxalis, is native to Guatemala, southern Mexico, and southeastern Arizona.

It was first collected in southern California in 2004, but has likely been in the area since the late 1990’s.

Researchers believe that the goldspotted oak borer was introduced into southern California on firewood or expanded its range from native regions.

For more, view:

• Verification of a useful character for separating the sexes of the goldspotted oak borer
• interagency collaborative research