The present invention relates to an aromatic diamide derivative represented by the general formula (I): ##STR00001## [A.sup.1 is optionally substituted (C.sub.1-C.sub.8)alkylene group, (C.sub.3-C.sub.8)alkenylene group or the like, B is --O-- or --N(R.sup.4)-- (wherein R.sup.4 is H, (C.sub.1-C.sub.6)alkyl, halo(C.sub.1-C.sub.6)alkyl or the like), R.sup.1 is H, (C.sub.1-C.sub.6)alkyl, optionally substituted phenyl, optionally substituted heterocyclic group, or the like, R.sup.2 and R.sup.3 are each H, (C.sub.3-C.sub.6)cycloalkyl or --A.sup.2--R.sup.8 (A.sup.2 is --C(.dbd.O)--, --C(.dbd.S)-- or --C(.dbd.NR.sup.9)--, R.sup.8 and R.sup.9 are each H, (C.sub.1-C.sub.6)alkyl or the like), Q.sup.1 to Q.sup.5 are each carbon or nitrogen, X and Y are each halogen, cyano, nitro, (C.sub.3-C.sub.6)cycloalkyl, optionally substituted phenyl, optionally substituted heterocyclic group, or the like, n is 0 to 4, m is 1 to 5, and Z.sup.1 and Z.sup.2 are each O or S] or a salt thereof, an agricultural and horticultural chemical, and a usage of the chemical. The agricultural and horticultural chemicals of the present invention exhibit remarkable controlling effects against various insect pests such as agricultural, forest and horticultural insect pests, and stored grain insect pests, etc., which injure paddy rice, fruit trees, vegetables, other crop plants, flowers and ornamental plants, and the like.