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Larvicidal activity of methanol extracts of 22 Australian and 12 Mexican plants against early 4th-instar larvae of Aedes aegypti and Culex pipiens pallens was examined. At 200 ppm, 100% mortality in larvae of A. aegypti and C. pipiens pallens was obtained in extracts of Kigelia pinnata and Ruta chalepensis. The extract of K. pinnata gave 76.3 and 80.3% mortalities in larvae of A. aegypti and C. pipiens...
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