Reported Resistance Case(s)
	
		| Order | Family | Common Name(s) | Group | Host | 
	
		| diptera | culicidae | medium-sized saltmarsh 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 | 
		
		| G3412 | 1978 | Field Evolved Resistance 
 | USA-- California
 | Womeldorf 1978. (1978). | 
		
*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.