Hippe, C., & Mani, E. 1995 Flight monitoring of the San Jose scale, Quadraspidiotus perniciosus (Comstock) (Diaspididae) and of its parasitoid Encarsia perniciosi (Tower) (Aphelinidae) in northwest Switzerland (Abstract only).. Israel Journal of Entomology 29: 184.

Notes: Isomers that were used in the traps identified; examples of the daily recorded catches with special reference to the effect of evening temperature, wind speed and precipitation.