Reported Resistance Case(s)

Species: panonychus ulmi

Order	Family	Common Name(s)	Group	Host
acari	tetranychidae	european red mite	AG	fruit trees

Active Ingredient: fenthion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 55389	Shaugnessy Code: 53301

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G2661	1974	Field Evolved Resistance	Canada-- Ontario	Herne 1974. (1974).

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