FMC Corporation
Mesoionic insecticides

Abstract:

Disclosed are compounds of Formula 1, including all geometric and stereoisomers, N-oxides, and salts thereof, ##STR00001## wherein A, X, Y, Z, R.sup.1, R.sup.2a, R.sup.2b and Q are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the invention.