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: chlorfenapyr

MOA: Uncoupler of oxidative phosphorylation via disruption of proton gradient, Chlorfenapyr, DNOC, Sulfluramid
Group: PYZ	CAS #: 122453-73-0	Shaugnessy Code: 129093

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G18638	2015	Field Evolved Resistance	Brazil-- Pernambuco-- Brejao	Ferreira, C., Andrade, F., Rodrigues, A., Siqueira, H., and Gondim Jr., M. (2015). Resistance in field populations of Tetranychus urticae to acaricides and characterization of the inheritance of abamectin resistance. Crop Protection, 67 77-83.
G18639	2015	Field Evolved Resistance	Brazil-- Pernambuco-- Bonito	Ferreira, C., Andrade, F., Rodrigues, A., Siqueira, H., and Gondim Jr., M. (2015). Resistance in field populations of Tetranychus urticae to acaricides and characterization of the inheritance of abamectin resistance. Crop Protection, 67 77-83.
G17144	2014	Field Evolved Resistance	China-- Beijing-- Changping	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.
G17145	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.
G17143	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.
G17146	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.
G15683	2013	Lab selected after field-evolved resistance**	Brazil-- Sao Paulo-- Campinas	Nicastro, R., Sato, M., Arthur, V., and Silva, M. (2013). Chlorfenapyr resistance in the spider mite Tetranychus urticae: stability, cross-resistance and monitoring of resistance. Phytoparasitica, 41 503-513.
G17114	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.
G7285	2005	Unspecified	Belgium	Van Leeuwen, T., Pottelberge, S.V., Tirry, L. (2005). Comparative acaricide susceptibility and detoxifying enzyme activties in field-collected resistant and susceptible strains of Tetranychus urticae.. Pest Management Science, 61 499-507.
G7228	2004	Unspecified	Australia	Herron, G.A., J. Rophail, and L.J. Wilson. (2004). Chlorfenapyr resistance in two-spotted spider mite (Acari: Tetranychidae) from Australian cotton.. Experimental and Applied Acarology, 34 315-321.
G7085	2004	Unspecified	Australia	Herron, G.A., J. Rophail, and L.J. Wilson. (2004). Chlorfenapyr resistance in two-spotted spider mite (Acari: Tetranychidae) from Australian cotton.. Experimental and Applied Acarology, 34 315-321.
G7522	2006	Lab selected*	Belgium-- East Flanders-- Ghent	Van Leeuwen, Thomas, Tirry, Luc, and Nauen, Ralf. (2006). Complete maternal inheritance of bifenazate resistance in Tetranychus urticae Loch ( Acari: Tetranychidae) and its implications in mode of action considerations. Insect Biochemistry and Molecular Biology, 36 869-877.

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