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: hexythiazox

MOA: Compounds of unknown or non-specific mode of action (mite growth inhibitors), Clofentezine, Hexythiazox
Group: TETR	CAS #: 78582	Shaugnessy Code: 0

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G17135	2014	Field Evolved Resistance	China-- Beijing-- Miyun	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G17127	2014	Field Evolved Resistance	China-- Beijing-- Huairou	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G17128	2014	Field Evolved Resistance	China-- Beijing-- Haidian	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G17134	2014	Field Evolved Resistance	China-- Beijing-- Huairou	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G17136	2014	Field Evolved Resistance	China-- Beijing-- Haidian	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G16213	2014	Lab selected after field-evolved resistance**	Greece-- Athens	Riga, M., Tsakireli, D., Ilias, A., Morou, E., Myridakis, A., Stephanou, E. G., Nauen, R., Dermauw, W., Van Leeuwen, T., Paine, M., and Vontas, J. (2014). Abamectin is metabolized by CYP392A16, a cytochrome P450 associated with high levels of acaricide resistance in Tetranychus urticae. Insect Biochemistry and Molecular Biology, 46 43-53.
G17120	2014	Lab selected*	China-- Shandong-- Tai'an	Tang, X., Zhang, Y., Wu, Q., Xie, W., and Wang, S. (2014). Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae). Journal of Economic Entomology, 107(5) 1900-1907.
G6611	2001	Unspecified	Brazil	Nauen, R., N. Stumpf, A. Elbert, C.P.W. Zebitz, and W. Kraus. (2001). Acaricide toxicity and resistance in larvae of different strains of Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae). Pest Manag Sci, 57 253-261.
G6621	2001	Unspecified	Australia	Nauen, R., N. Stumpf, A. Elbert, C.P.W. Zebitz, and W. Kraus. (2001). Acaricide toxicity and resistance in larvae of different strains of Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae). Pest Manag Sci, 57 253-261.
G5611	1995	Unspecified	USA	Flexner, J.L., P.H. Westigard, R.Hilton, and B.A. Croft. (1995). Experimental Evaluation of Resistance Management for twospotted spider mite (Acari: Tetranychidae) on Southern Oregon Pear: 1987-1993. Journal of Economic Entomology, 88(6) 1517-1524.
G5503	1993	Unspecified	Australia	Grant, H., V. Edge, and J. Rophail. (1993). Clofentezine and hexythiazox resistance in Tetranychus urticae Koch in Australia. Experimental & Applied Acarology, 17 433-440.

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