EFFECTS OF SOME NEW PROINSECTICIDE TYPE FENOXYCARB DERIVATIVES AND RELATED-COMPOUNDS ON SOME SCALE INSECTS AND THEIR HYMENOPTEROUS PARASITOIDS

While Insegar and the sulfenylated carbamate juvenoid NKI-43049 totall y inhibited the egg production of Carulaspis juniperi (Hom., Diaspidid ae), only approximately 1% of the Applaud or NKI-35120 treated females laid eggs. Applaud and the sulfinylated carbamate derivative NKI-3512 0 resulted a very low egg-production (16% and 4% of the untreated cont rol, respectively). Importantly, the tested fenoxycarb-related compoun ds did not reduce the rate of parasitization caused by Aphytis mytilas pidis (Hym., Aphelinidae), Applaud, however, had a moderately adverse effect on it. NKI-35120 gave an excellent result at a concentration of 0.1 a.i.% on Lepidosaphes beckii (Hom., Diaspididae). Insegar (0.1 a. i.%) and Applaud (0.05 a.i.%) had good activity as well. Males were mo re sensitive than females for the treatments. NKI-35120 and Insegar st rongly reduced the egg production of the females. The treatments did n ot reduce significantly the rate of parasitization caused by Aphytis l epidosaphes (Hym., Aphelinidae). NKI-35120 and Insegar at a concentrat ion of 0.025 a.i. % strongly affected Ceroplastes japonicus (Hom., Coc cidae) development since none of the treated larvae could develop to f emale. Surprisingly, Applaud had only moderate affectivity on C. japon icus.