Reported Resistance Case(s)

Species: coccus pseudomagnoliarum

Order	Family	Common Name(s)	Group	Host
homoptera	coccidae	citricola scale	AG	citrus

Active Ingredient: hydrogen cyanide

MOA: Unknown Mode of Action (general), Undetermined MOA
Group: FUM	CAS #: 74-90-8	Shaugnessy Code: 45801

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G7	1938	Field Evolved Resistance	USA-- California	Quayle, H. J. (1938). The development of resistance to hydrocyanic acid in certain scale insects.. Hilgardia, 11 183-210.

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