Abstract
Abstract Plant extracts of a group of 57 species from 21 different botanical families, harvested from the wild in southeastern Spain, were screened for antiinsect activity using the stored grain pest Tribolium castaneum Herbst. (Coleoptera: Tenebrionidae). Echium creticum, Lepidium graminifolium, Anacyclus clavatus, Galactites duraei, Helichrysum decumbens, Senecio vulgaris, Pallenis spinosa, Ecballium elaterium, Haplophyllum linifolium and Solanum bonariense gave activity in most tests performed. Ballota hirsuta produced growth inhibition in larvae. Ononix natrix, Lavatera cretica and Urginea maritima (bulb) showed contact toxicity in pupae (100% mortality). Compositae species had a tendency to induce either growth inhibition (with or without mortality) or repellency on the target insect. Overall, 70% of the extracts tested showed some activity and 21% of them (including endemisms) were more active and newly identified.
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