Reported Resistance Case(s)

Species: tetranychus tumidus

Order	Family	Common Name(s)	Group	Host
acari	tetranychidae	tumid spider mite	AG	vegetables, cotton, melon

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
G55	1954	Field Evolved Resistance	USA-- Texas	Ivy, E. E. and Scales, A. L. (1954). Are cotton insects becoming resistant to insecticides? J.. Econ. Entomol., 47 981-84.

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