Babu, T.R., & Ramanamurthy, G. 1999 Residual toxicity of pesticides to the adults of Cryptolaemus montrouzieri Mulsant (Coccinellidae: Coleoptera).. International Pest Control 41(4): 137-138.

Notes: Studies on the toxicity of insecticides and fungicides to adult C. montrouzieri (a predator of mealybugs, Saccharicoccus sacchari), are presented together with details of the persistence of the pesticides. The insecticides monocrotophos (Nuvacron), cypermethrin (Lacer), acephate (Asataf), chlorpyrifos (Radar) [propiconazole] and fenvalerate (Fenval) and the fungicide mancozeb (Indofil M-45) [mancozeb + thiophanate-methyl] recorded 100% mortality of adults in bioassays. Chlorothalonil (Kavach) had the lowest LT50 value of 1.5 days and was least persistent. The pyrethroids, viz. cypermethrin (15.9 days) and invalerate (14.1 days) were highly persistent. The lethal time values (LT) were calculated following probit analysis.