Oligonychus ilicis (McGregor) oviposition, development, fecundity, and survival after deltamethrin application was studied in the laboratory. The insecticide did not affect the number of eggs laid by female on sprayed coffee (Coffea arabica L.) leaf disks. The insecticide caused delay in post-embryonary phase (larva-adult) of females in 17.4% and of males in 17.2%, length of the male development cycle in 0.7%, and affected the survival rate of males and females that was reduced up to 63.9% depending on the concentration of the pyrethroid. Females descending from progenies created on discs of treated leaves showed an increase of 31.9% in oviposition.
Acari; coffee red mite; biological disequilibrium; pyrethroid
