Reported Resistance Case(s)

Species: culex tarsalis

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

Active Ingredient: fenthion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 55389	Shaugnessy Code: 53301

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G1539	1969	Field Evolved Resistance	USA-- California	Georghiou, G. P. Gillies, P. a> and Womeldorf, D. J. (1969). Culex tarsalis Coquillett: Detection of resistance to parathion, methyl parathion, fenthion, Dursban and Abate in a malathion-resistance population.. Calif. Vector Views., 16 115-18.

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