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: methomyl

MOA: Acetylcholine esterase inhibitors, Carbamates
Group: CAR	CAS #: 16752775	Shaugnessy Code: 90301

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G10065	2010	Lab selected after field-evolved resistance**	Belgium	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G10069	2010	Lab selected after field-evolved resistance**	Greece-- Athens	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G5767	1996	Unspecified	Greece	Tsagkarakou, A., M. Navajas, J. Lagnel, J. Gutierrez, and N. Pasteur. (1996). Genetic variability in teranychus urticae (Acari: Tetranychidae) from Greece : Insecticide resistance and Isozymes. Journal of Economic Entomology, 89(6) 1354-1358.
G2360	1974	Field Evolved Resistance	United Kingdom	Cranham 1974b. (1974).

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