Insecticidal Activity of 42 Species of Medical Plant Methanol Extracts Against Aedes albopictus

The insecticidal activity of 42 species of plant methanol extracts at the mass concentration of 1 mg/mL against the 4th-instar larva of Aedes albopictus was tested in the experiment.The results indicated that the corrected mortalities of 4 species of plants methanol extracts,Huperzia serrata,Sassafras tzumu, Millettia pachycarpa and Euptelea pleiospermum against A.albopictus were 100% ,87.50% ,90.00% and 86.67% at the mass concentration of 1 mg/mL after treatment in 24 h,respectively.The corrected mortalities of 4 species of plants were almost 100% after treatment in 48 h.The toxicities of these plants against A.albopictus were deeply researched after treatment in 24 h and their LC50 values were 48.89,107.59, 111.58 and 118.63 μg/mL,respectively.H.serrata displayed a good insecticidal activity against A.albopictus,and its insecticidal ingredients could be suggested for further research.