ISRAEL JOURNAL OF ENTOMOLOGY, Vol. 38, 2008, pp. 143–181 Proceedings of the Twenty-sixth Meeting of the Israel Entomological Society—Abstracts The following abstracts represent lectures given in the 26th congress of the Entomological Society of Israel that took place at Argicultural Research Organisation, Volcani Centre, Bet Dagan on 10 October, 2007. They were edited by Dr. Ada Rafaeli, checked for proper format by the editors of this issue, and accepted for publication without further content editing or proofing. An asterisk indicates the author whose E-mail address is given. Insecticides with novel modes of action: Mechanism, selectivity, and importance in pest management programs ISAAC ISHAAYA,1* SVETLANA KONTSEDALOV,1 AND RAMI HOROWITZ2 1Department of Entomology, Plant Protection Institute, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel [Email:
[email protected]]; 2Department of Entomology, Gilat Research Center, M.P. Negev 85280, Israel Efforts have been made during the past three decades to develop selective insecticides acting specifically on biochemical sites present in particular insect groups, but whose properties differ from others. This approach has led to the discovery of compounds affecting hormonal regulation of molting e.g., ecdysteroids, juvenile hormone mimics, and chitin synthesis inhibitors. In addi- tion, compounds that selectively interact with the insect nAChR such as the neonicotinoids have been introduced for controlling aphids and whiteflies. The search for potent acylureas has led to the development of new compounds such as chlorfluazuron and teflubenzuron, which are more potent than diflubenzuron on various agricultural pests. One of the recent benzoylphenyl ureas is the novaluron (Rimon) which is a powerful suppressor of lepidopteran pests that attack cotton and vegetables.