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 totally inhibited the egg production of Carulaspis juniperi (Hom., Diaspididae), only approximately 1% of the Applaud or NKI-35120 treated females laid eggs. Applaud and the sulfinylated carbamate derivative NKI-35120 resulted a very low egg-production (16% and 4% of the untreated control, respectively). Importantly, the tested fenoxycarb-related compounds did not reduce the rate of parasitization caused by Aphytis mytilaspidis (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 more sensitive than females for the treatments. NKI-35120 and Insegar strongly reduced the egg production of the females. The treatments did not reduce significantly the rate of parasitization caused by Aphytis lepidosaphes (Hym., Aphelinidae). NKI-35120 and Insegar at a concentration of 0.025 a.i. % strongly affected Ceroplastes japonicus (Hom., Coccidae) development since none of the treated larvae could develop to female. Surprisingly, Applaud had only moderate affectivity on C. japonicus.