Novel insecticidal pyrazolines of the formula ##STR1## wherein R.sup.1 and R.sup.2 represent hydrogen, C.sub.1-4 alkyl, or unsubstituted or halogen substituted phenyl,A represents optionally substituted phenyl or halogen-substituted 3-pyridyl, andX and Y individually represent hydrogen, halogen, C.sub.1-4 alkyl, halogeno-C.sub.1-4 alkyl, halogeno-C.sub.1-4 alkoxy or halogeno-C.sub.1-4 alkylthio, or X and Y together form haloalkylenedioxy, with the proviso that X and Y do not simultaneously represent hydrogen, and other provisos as well.