Inhibition of Movement of Larvae of the Convergent Lady Beetle1 by Leaf Trichomes of Tobacco2

Abstract

Movement of all instars of Hippodamia convergens Guérin-Méneville was affected by the sticky exudates of leaf trichomes of tobacco cultivars. The younger the instar and the longer the larvae were on these leaves, the greater was the inhibition of movement. The alkaloid content of the plant had no effect on movement.