Pyrimidylmethyl thiophosphorus esters useful for the control of insects, mites and nematodes

摘要

Heterocyclic compounds of the formula <IMAGE> I wherein R1, R2, R3, R4, R5 and X are as defined hereinafter, process for their preparation, as well as pesticidal compositions containing these compounds as the active ingredient and methods for using the pesticidal compositions for the control of pests are described.