Reported Resistance Case(s)

Species: tetranychus urticae

Order	Family	Common Name(s)	Group	Host
acari	tetranychidae	twospotted spider mite	AG	cotton, fruits, vegetables, walnut, ornamentals

Active Ingredient: EPN

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 2104645	Shaugnessy Code: 41801

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G1191	1967	Field Evolved Resistance	USA-- Oregon	Westigard, P. H., Lombard, P. and Berry, D. (1967). Bionomics and control of two-spotted spider mite on pear in southern Oregon.. Oreg. State Univ. Agric. Exp. Stn. Tech. Bull. 101, 32 pp..

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