Über die Bevorzugung von Blatthaaren zur Eiablage bei Bemisia tabaci (Genn.) (Hom., Aleyrodidae)

Studies on the egg laying byB. tabaci showed this pest fixing its eggs at the basis of leaf hairs of cotton plants. The rejection of none hairy-leaved cotton varieties is apparently due to the lack of suitable egg laying sites. Moreover, the preference of the whitefly for leaf hair sites for egg laying explains reasonably why the hairy-heaved, jassid—resistant cotton varieties are more attractive to whitefly. The indiscriminate behaviour of egg laying mentioned byGameel (1974) may be possible on glabrousleaved host plants.