Reported Resistance Case(s)
	
		| Order | Family | Common Name(s) | Group | Host | 
	
		| diptera | chironomidae |  | AG |  | 
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 | 
		
		| G3401 | 1978 | Field Evolved Resistance 
 | USA-- California
 | Ali, A. and Mulla, M. S. (1978). Declining field efficacy of chlorpyrifos against chironomid midges and laboratory evaluation of substitute larvicides.. J. Econ. Entomol., 71 778-82. | 
		
*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.