Reported Resistance Case(s)

Species: psylla pyricola

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

Active Ingredient: aldrin

MOA:	GABA-gated chloride channel antagonists, Cyclodiene organochlorines
Group:	CYCLO CAS #: 309002 Shaugnessy Code: 45101

Resistance Case(s)

Case Id	Year of Report	Location	Reference
	1972	USA -- Oregon	Westigard, P. H. and Zwick, R. W. (1972). The pear psylla in Oregon. Oreg. State Univ. Agric. Stn. Tech. Bull., 122, 22 pp.
	1959	USA -- Washington	Harries, F. H. and Burts, E. (1959). Laboratory studies of pear psyllas resistant to dieldrin and some related compounds. J. Econ. Entomol., 52, 530.