Guo, Y.Q. 1992 [Canonical correlation analysis between the main citrus pest insects and their natural enemies.].. Plant Protection 18: 4, 2-4.

Notes: In an abandoned orange orchard (20-30 years old) in Sichuan, China, population variation of lady beetles [Coccinellidae] and parasitoid wasps coincided with that of the main pests, such as red spider mites [Tetranychus urticae] and armoured scales [Diaspididae], but the relationship with spiders was not significant. It is suggested that the relation between the populations had been disturbed due to pesticide use.