Reported Resistance Case(s)

Species: psylla pyricola

Order	Family	Common Name(s)	Group	Host
homoptera	psyllidae	pear psylla	AG	pear

Active Ingredient: parathion-methyl

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 298000	Shaugnessy Code: 53501

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G1424	1968	Field Evolved Resistance	Italy	Martelli, M. (1968). In: FAO 1969.

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