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: malathion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 121755	Shaugnessy Code: 57701

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G2333	1974	Field Evolved Resistance	Sweden	Anon. 1974c. (1974).
G1993	1972	Field Evolved Resistance	USSR	Kornilov, V. G. (1972). Control methods for preventing the development of spider mite resistance incovered ground (in Russian).. Zashch. Rast., 35 209-15.
G1621	1970	Field Evolved Resistance	Finland	Markkula, M. and Tittanen, K. (1970). Two-spotted spider mite Tetranychus telarius L.. resistant to aldicarb. Ann. Entomol. Fenn., 36 191-92.
G1520	1969	Field Evolved Resistance	Canada-- Ontario	Herne, D. H. C. and Brown, A. W. A. (1969). Inheritance and biochemistry of OP-resistance in a New York strain of the two-spotted spider mite.. J. Econ. Entomol., 62 205-09.
G1360	1968	Field Evolved Resistance	South Africa	Myburgh, G. (1968). In: FAO 1969.
G1192	1967	Field Evolved Resistance	USA-- Indiana	(1967). Report of the First Session of the FAO Working Party of Experts on Resistance of Pests to Pesticides.. FAO, Rome 1965.
G684	1965	Field Evolved Resistance	Australia-- Tasmania	Miller 1965. (1965).

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