Reported Resistance Case(s)

Species: chromaphis juglandicola

Order	Family	Common Name(s)	Group	Host
homoptera	aphididae	walnut aphid	AG	walnut

Active Ingredient: parathion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 56382	Shaugnessy Code: 57401

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G56	1954	Field Evolved Resistance	USA-- California	Michelbacher, A. E., Cassil, C. C. and Davis, C. S. (1954). Walnut aphid resistant to parathion in nothern California.. J. Econ. Entomol., 47 366-67.

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