New insecticidal or/and ovicidal benzoylurea derivatives of the formula: ##STR1## wherein X.sup.1 is hydrogen or halogen; X.sup.2 is halogen; Y.sup.1, Y.sup.2 and Y.sup.3 are hydrogen, halogen or alkyl, whereby at least one of Y.sup.1, Y.sup.2 and Y.sup.3 is other than hydrogen; and R is hydrogen or a group represented by the formula --CF.sub.a Z.sub.b H.sub.(3-a-b) wherein a and b are 0, 1, 2 or 3, with a+b.ltoreq.3 and Z is halogen, their production and use.
                            新的杀虫或/和卵杀
脲衍
生物的
化学式如下:##STR1## 其中X.sup.1是氢或卤素;X.sup.2是卤素;Y.sup.1、Y.sup.2和Y.sup.3是氢、卤素或烷基,其中至少一个Y.sup.1、Y.sup.2和Y.sup.3不是氢;R是氢或由
化学式--CF.sub.a Z.sub.b H.sub_(3-a-b)表示的基团,其中a和b为0、1、2或3,且a+b≤3,Z为卤素,它们的生产和用途。