Oak Pests-The Oak Twig Girdler (Agrilus politus, Say)

Childs, L.

Monthly Bulletin of the State Commission of Horticulture 3(3): 150-155


The author points out that the live oaks (Quercus agrifolia) throughout California are subject to many insect pests, of which this paper is a preliminary account. The presence of the twig girdler (Agrilus politus), a Buprestid beetle, is easily detected on the smaller twigs, and where the infestation is severe and of long standing, the vigour of the trees is greatly reduced.