Reported Resistance Case(s)

Species: culex tarsalis

Order	Family	Common Name(s)	Group	Host
diptera	culicidae	western encephalitis mosquito	MED

Active Ingredient: malathion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 121755	Shaugnessy Code: 57701

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G118	1957	Field Evolved Resistance	USA-- California	Gjullen, C. M. and Issak, L. W. (1957). Present status of mosquito resistance to insecticides in the San Joaquin Valley in California.. Mosq. News., 17 67-70.

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