Reported Resistance Case(s)

Species: aonidiella aurantii

Order	Family	Common Name(s)	Group	Host
homoptera	diaspididae	california red scale	AG	citrus

Active Ingredient: chlorpyrifos

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 2921882	Shaugnessy Code: 59101

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G5645	1995	Unspecified	USA-- California	Grafton-Cardwell, E.E., and S.L.C. Vehrs. (1995). Monitoring for Organophosphate- and Carbamate-Resistant Armored Scale (Homoptera: Diaspididae) in San Joaquin Valley Citrus. Journal of Economic Entomology, 88(3) 495-504.
G5960	1998	Unspecified	USA-- California-- Lindsay	Grafton-Cardwell, E.E., Y. Ouyang, and J. Salse. (1998). Insecticide Resistance and Esterase Enzyme Variation in the California Red Scale (Homoptera: Diaspididae). Journal of Economic Entomology, 91(4) 812-819.
G3547	1979	Field Evolved Resistance	South Africa	Nel, J. J. C., de Lange, L. and van Ark, H. (1979). Resistance of citrus red scale, Aonidella aurantii (Mask.) to insecticides.. J. Entomol. Soc. Southern Afr., 42 275-81.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.