Compounds of Formula I, their N-oxides and salts are disclosed ##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 C(.dbd.O), SO or S(O).sub.2, each ring optionally substituted with 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 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.