Application of systemic insecticides in relation to boxwood leafminer's life history

Abstract

We describe the life cycle of boxwood leafminer (Monarthropalpus flavus) in the mid-Atlantic region of the United States in relation to growing degree-day accumulations. In addition, the efficacy of three systemic insecticides (avermectin, imidacloprid, and acephate) for control of the boxwood leafminer were evaluated. Avermectin and imidacloprid applied at adult flight provided excellent control. Imidacloprid applied in the summer when larvae were present in leaves gave good control of larvae. Avermectin and acephate were ineffective when applied in the summer.