Reported Resistance Case(s)

Species: lygus hesperus

Order	Family	Common Name(s)	Group	Host
hemiptera	miridae	western tarnished plant bug	AG	alfalfa, bean, cotton, safflower

Active Ingredient: trichlorfon

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 52686	Shaugnessy Code: 57901

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G5458	1993	Unspecified	USA	Xu, G., and W.A. Brindley. (1993). Structure of Populations of Lygus hesperus (Hemiptera: Miridae) with Multiple Resistance Mechanisms to Trichlorfon. Journal of Economic Entomology, 86(6) 1656-1663.
G4044	1982	Field Evolved Resistance	USA-- Idaho	Brindley, W. A., Al-Rajhi, D. H. and Rose, R. L. (1982). Portable incubaotor and its use in insecticide bioassays with field populations of lygus bugs, aphids, and other insects.. J. Econ. Entomol., 75 758-60.
G4045	1982	Field Evolved Resistance	USA-- Utah	Brindley, W. A., Al-Rajhi, D. H. and Rose, R. L. (1982). Portable incubaotor and its use in insecticide bioassays with field populations of lygus bugs, aphids, and other insects.. J. Econ. Entomol., 75 758-60.
G2479	1974	Field Evolved Resistance	USA-- Washington	Anon. 1974g. (1974).
G1550	1969	Field Evolved Resistance	USA-- California	Leigh, T. F. (1969). Chemical and microbial insecticide studies for cotton insect control.. Proc. Cotton Symp. Insect Mite Contr. Problems, Calif., pp. 53-81 (Mimeo)..

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