Reported Resistance Case(s)

Species: aedes nigromaculis

Order	Family	Common Name(s)	Group	Host
diptera	culicidae	medium-sized pasture floodwater 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
G3417	1978	Field Evolved Resistance	USA-- Utah	Merrell, R. And Wagstaff, K. (1978). Status or organophosphorus mosquito larvicide resistance in Utah: 1977.. Proc. 13th Annu. Meet. Utah Mosq. Abatement Assoc., 30 10-12.
G1671	1970	Field Evolved Resistance	USA-- California	Schaefer, C. H. and Wilder, W. H. (1970). Insecticide resistance and cross-resistance in Aedes nigromaculis.. J. Econ. Entomol., 63 1224-26.

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