<p>Disclosed are compounds of Formula 1,
wherein
X is O;
Y is O;
and R 1 , R 2 , R 3 and R 4 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.</p>
