Jenser, G., & Sheta, I.B. 1972 Importance of male control in preventing damage done by the San José scale (Quadraspidiotus perniciosus Comst.). Acta Agronomica Academiae Scientiarum Hungaricae 12(1/2): 119-124.

Notes: This research suggests that protection against San José scale is provided by the control of males in the overwintering generation, thereby allowing a reduced quantity of subsequently applied insecticides.