Antifeeding Active Substances for Insects in Clerodendron tricotomum Thunb.

In 1962, T. Miyake investigated antifeeding activities of the hot water extracts from the fresh leaves of the various plants for Euproctis Pseudoconspersa Strand and Cicadella viridis Linn., and, in particuraly, the extracts of Clerodendron tricotomum Thunb. showed a strong antifeeding activity." We have reinvestigated that benzene extracts of air-dried leaves of C. tricotomum Thunb. showed dis tinct antifeeding activity for the larvae of tobacco cut worm, Spodoptera litura F.