Abstract: Insecticidally active 1-aryl-pyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or haloalkyl,R.sup.2 represents alkyl, alkenyl, alkinyl, cycloalkyl, haloalkyl, haloalkenyl, alkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, optionally substituted aralkyl or optionally substituted aryl,R.sup.3 represents alkyl, haloalkyl, cycloalkyl or optionally substituted aryl,Ar represents subsituted phenyl, with the exception of the 4-nitrophenyl radical or the 2,4-dinitrophenyl radical, or represents optionally substituted pyridyl, andn represents a number 0, 1 or 2.

Abstract: Novel insecticidally active compounds of the formula ##STR1## in which R.sup.1 represents halogenoalkyl,R.sup.2 represents cyano, hydroxycarbonyl, carbamoyl, thiocarbamoyl, alkoxycarbonyl, N-alkylcarbamoyl or N,N-dialkylcarbamoyl, or represents alkenyloxycarbonyl, N-alkenylcarbamoyl, N,N-dialkenylcarbamoyl, alkinyloxycarbonyl, N-alkinylcarbamoyl, N,N-dialkinylcarbamoyl or N-arylcarbamoyl andAr represents substituted phenyl, with the exception of the 4-nitrophenyl radical.

Abstract: A method of combating insects, sense animals and nematodes comprising applying to insects, arachnids and nematodes and/or their environment an effective amount of at least one 5-aminopyrazole of the formula (I) ##STR1## in which R.sup.1 represents hydrogen, alkyl or halogenoalkyl,R.sup.2 represents alkyl, halogenoalkyl, unsubstituted or substituted aralkyl or unsubstituted or substituted aryl,R.sup.3 represents hydrogen, alkyl or a radical ##STR2## Ar represents unsubstituted or substituted phenyl or unsubstituted or substituted pyridyl andn represents the number 0, 1 or 2,whereinX represents oxygen or sulphur andR.sup.4 represents hydrogen, alkyl, alkenyl, alkinyl, halogenoalkyl, alkoxyalkyl, alkylthioalkyl, unsubstituted or substituted cycloalkyl, unsubstituted or substituted aryl, alkoxy, alkylthio, unsubstituted or substituted aryloxy, unsubstituted or substituted arylthio, alkylamino, dialkylamino or unsubstituted or substituted arylamino.

Abstract: Pesticidally active 5-heterocyclyl-1-aryl-pyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or haloalkyl,R.sup.2 represents alkyl, alkenyl, alkinyl, cycloalkyl, haloalkyl, haloalkenyl, optionally substituted aralkyl or optionally substituted aryl,Ar represents in each case optionally substituted phenyl or pyridyl,Het represents a heterocycle of the formula ##STR2## n represents a number 0, 1 or 2, whereR.sup.3 and R.sup.4, independently of one another, represent in each case hydrogen, alkyl or phenyl.Intermediates of the formulas ##STR3## are provided, the former also being pesticidal.

Abstract: Arthropodicidally active novel benzoyl(thio)ureas of the formula ##STR1## in which X is oxygen or sulphur,R.sup.1 is halogen andR.sup.2 is halogen.

Abstract: Arthropodicidally active novel benzoyl(thio)ureas of the formula ##STR1## in which X is oxygen or sulphur, andR.sup.1 and R.sup.2 each independently is hydrogen, halogen or C.sub.1 -C.sub.4 -alkyl.

Abstract: 1-Phenyl-3-benzoyl-(thio)ureas of the formula ##STR1## in which X represents oxygen or sulphur,R.sup.1 represents hydrogen, halogen, nitro, alkyl or alkylthio,R.sup.2, R.sup.4 and R.sup.5 are identical or different and represent hydrogen or halogen,R.sup.3 represents hydrogen, halogen or nitro,R.sup.6 and R.sup.7 are identical or different and represent hydrogen, halogen or alkyl,R.sup.8 and R.sup.9 are identical or different and represent hydrogen or halogen andR.sup.10 represents halogenoalkylthio or halogenoalkoxy,with certain exclusions, which possess insecticidal and acaricidal activity.

Abstract: A method of combating insects and acarids which comprises applying to such insects, acarids or a habitat thereof, an insecticidally or acaricidally effective amount of a 5-amino-1-aryl-pyrazole of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or halogenoalkyl,R.sup.2 represents trifluoromethyl,R.sup.3 represents hydrogen, alkyl or alkenyl,R.sup.4 represents hydrogen, alkyl, alkenyl, alkinyl or a ##STR2## radical, and Ar represents in each case optionally substituted phenyl or pyridyl, where X represents oxygen or sulphur, and R.sup.5 denotes alkyl or halogenoalkyl.Some of the compounds are new.

Abstract: Insecticidally and acarididally active 1-arylpyrazoles of the formula ##STR1## in which R.sup.1 represents hydrogen, alkyl or halogen alkyl,R.sup.2 represents alkyl, alkenyl, alkinyl, cycloalkyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, optionally substituted aralkyl or optionally substituted aryl,R.sup.3 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl,R.sup.4 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl, and, in addition, also represents hydrogen in the case where R.sup.3 does not simultaneously represent unsubstituted alkyl, orR.sup.3 and R.sup.

Abstract: Novel insecticidally and acaricidally active compounds of the formula ##STR1## in which R.sup.1 is halogen or alkyl,R.sup.2 is hydrogen, halogen or alkyl,R.sup.3 is hydrogen or methyl, andX is oxygen or sulphur.Several of the intermediates are also new.

Abstract: Pesticidally active novel .alpha.-cyano-(di)thiophosphonic acid esters of the formula ##STR1## in which X represents oxygen or sulphur,R and R.sup.1 are identical or different and represent alkyl,R.sup.2 represents hydrogen or optionally substituted alkyl andX.sup.1 and X.sup.2 are identical or different and represent halogen, hydrogen or optionally substituted alkyl.

Abstract: Novel insecticides and nematicides of the formula ##STR1## in which R is i-propyl or sec.-butyl, andR.sup.1 is hydrogen or halogen.

Abstract: Pesticidal compositions useful in protecting plants and also in the hygiene field are disclosed. The new tetramethylcyclopropanecarboxylates have the formula ##STR1## where R represents mercapto, methylthio, alkylsulphenyl or alkylsulphonyl.

Abstract: Substituted furazans of the formula ##STR1## in which R and R.sup.1 are identical or different and represent optionally substituted aromatic or heteroaromatic radicals,R.sup.2 represents hydrogen, an OH or COOH grouping or an optionally substituted radical from the series comprising alkyl, alkoxy, cycloalkyl, cycloalkenyl, alkoxycarbonyl, alkoxythiocarbonyl, alkylsulphonyl, arylsulphonyl and aralkyl,Y represents oxygen or an S(O).sub.m, --CR.sup.3 R.sup.4, CO or NR.sup.5 grouping,in whichm represents the number 0, 1 or 2 andR.sup.3, R.sup.4 and R.sup.5 are identical or different and represent hydrogen or alkyl,n represents the number 0 or 1 andX represents oxygen or sulphur,and wherein, ifR represents phenyl,R.sup.1 represents phenyl,R.sup.2 represents hydrogen andX represents oxygen or sulphur,thenn represents the number 1,or ifn represents the number 0,R represents 4-bromophenyl,R.sup.1 represents 4-chlorophenyl andR.sup.2 represents hydrogen,thenX represents sulphur,which possess pesticidal activity.

Abstract: Pesticidally active compounds of the formula ##STR1## in which R.sup.1 is an organic radical,R.sup.2 is hydrogen, trialkylsilyl, a hydrocarbon or acyl radical, andR.sup.3 and R.sup.4 independently are an amino, hydroxyl, hydroximino, alkoxy or like radical.Most of the compounds are new, as are various intermediates therefor.

Abstract: Novel arthropodicidally active compounds of the formula ##STR1## in which R represents amino or optionally substituted radicals from the series comprising alkyl, alkylamino, methyl-alkylamino, alkoxy, alkenyloxy and alkylthio,R.sup.1 to R.sup.8 are identical or different and represent hydrogen or optionally halogen-substituted radicals from the series comprising alkyl, alkenyl, alkoxyalkyl and alkylthioalkyl, or represent halogen, nitro or dialkylaminoalkyl or represent optionally substituted phenyl or benzyl, and two of the radicals R.sup.1 to R.sup.8, together with the carbon atom or atoms to which they are bonded, may furthermore form an optionally substituted monocyclic or bicyclic ring, andn represents zero or 1.intermediates therefor wherein R is replaced by Cl are also novel.

Abstract: Insecticidally, arachnicidally and fungicidally active novel isoxazolidines of the formula ##STR1## in which n is 2 or 3,R.sup.1 is H or alkyl,R.sup.2 is optionally substituted alkyl, cycloalkyl, alkenyl, alkinyl, aryl or a heterocyclic radical which is optionally substituted, andA is a di- or trivalent aryl or heteroaryl radical which is optionally substituted by alkyl, cycloalkyl, aralkyl, alkoxy, alkylthio, aryloxy, arylthio, halogen, CN, OH, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, alkoxyalkyl, optionally halogen-substituted methylenedioxy or ethylenedioxy.Some of the intermediates are also new.

Abstract: Substituted isoxazolidines of the formula ##STR1## in which R.sup.1 represents optionally substituted alkyl, cycloalkyl, aralkyl, aryl or heteroaryl or radicals of the formula --COR.sup.4,R.sup.4 represents optionally substituted alkyl, aryl, alkoxy, alkylthio, aroxy, arylthio, amino, alkylamino, dialkylamino, arylamino, arylalkylamino, diarylamino or cycloalkylamino, or optionally substituted heterocyclic radicals which are bonded via nitrogen,R.sup.2 represents hydrogen or the radicals mentioned for R.sup.1, it being possible for R.sup.1 and R.sup.2 to be identical or different, andR.sup.3 represents optionally substituted alkyl, cycloalkyl, alkenyl, alkinyl or aryl, or saturated heterocyclic radicals, which are optionally substituted,and acid salts thereof, are pesticidally active and increase animals' utilization of feed. Intermediates therefor are also new.

Abstract: Pyrimidin-5-yl thionophosphate of the formula ##STR1## in which R is alkyl or aryl,R.sup.1 is ethyl or i-propyl andR.sup.2 is i-propoxy-, sec.-butoxy or ethylamino, orR.sup.1 is n-propyl and at the same time R.sup.2 is n-propoxy,which possess arthropodicidal activity.

Abstract: A phosphoric acid ester of the formula ##STR1## in which Y is oxygen, sulphur or --NR--,R is hydrogen or alkyl,X is oxygen or sulphur, andR.sup.1 and R.sup.2 each independently is alkyl.