This invention pertains to compounds of Formula I, their N-oxides and suitable salts ##STR00001## wherein A is O or S; G is a 5- or 6-membered heteroaromatic ring or a 5- or 6-membered nonaromatic heterocyclic ring optionally including one or two ring members selected from the group consisting of C(.dbd.O), SO or S(O).sub.2, each ring optionally substituted with from one to four R.sup.2; each J is independently a phenyl ring, a 5- or 6-membered heteroaromatic ring or an aromatic 8-, 9- or 10-membered fused carbobicyclic or heterobicyclic ring system, wherein each ring or ring system is optionally substituted with from one to four R.sup.3; and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n are as defined in the disclosure. A composition comprising a compound of Formula I, and a method for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound of Formula I are also disclosed.