Pfeiffer, D.G. 1985 Pheromone trapping of males and prediction of crawler emergence of San Jose scale (Homoptera: Diaspididae) in Virginia apple orchards.. Journal of Entomological Science 20: 351-353.
Notes: Quadraspidiotus perniciosus.
Pfeiffer, D.G. 1985 Pheromone trapping of males and prediction of crawler emergence of San Jose scale (Homoptera: Diaspididae) in Virginia apple orchards.. Journal of Entomological Science 20: 351-353.
Notes: Quadraspidiotus perniciosus.