Reported Resistance Case(s)

Species: sitophilus zeamais

Order	Family	Common Name(s)	Group	Host
coleoptera	curculionidae	maize weevil, rice weevil	AG	corn, rice, sorghum

Active Ingredient: cypermethrin

MOA: Sodium channel modulators, Pyrethroids, Pyrethrins, DDT
Group: PYR	CAS #: 52315078	Shaugnessy Code: 109702

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G6297	2003	Unspecified	Brazil-- Mato Grosso do Sul	Ribeiro, B.M., R.N.C. Guedes, E.E. Oliveira, and J.P. Santos. (2003). Insecticide resistanceand synergism in Brazilian populations of Sitophilus zeamais (Coleoptera: Curculiondae).. Journal of Stored Products, 39 21-31.
G6298	2003	Unspecified	Brazil-- Sao Paulo	Ribeiro, B.M., R.N.C. Guedes, E.E. Oliveira, and J.P. Santos. (2003). Insecticide resistanceand synergism in Brazilian populations of Sitophilus zeamais (Coleoptera: Curculiondae).. Journal of Stored Products, 39 21-31.
G6299	2003	Unspecified	Brazil-- Parana	Ribeiro, B.M., R.N.C. Guedes, E.E. Oliveira, and J.P. Santos. (2003). Insecticide resistanceand synergism in Brazilian populations of Sitophilus zeamais (Coleoptera: Curculiondae).. Journal of Stored Products, 39 21-31.

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