<![CDATA[The spread of diseases caused by the Aedes aegypti mosquito, such as dengue fever and Zika fever, continues to pose a serious threat to public health in many countries, particularly in tropical and subtropical regions. In an effort to address this problem, vector control is a key part of the strategy to prevent the transmission of these diseases. In recent decades, attention to the utilisation of natural materials as alternatives in vector control has increased. One potential source that needs to be explored is langsat leaves, which are known to have active compounds. Ethanol extracts of langsat leaves may contain compounds that can provide control effects against Aedes aegypti mosquito larvae. This study aims to assess the effectiveness of ethanol extract of langsat leaves in controlling Aedes aegypti mosquitoes, the vector of Dengue Fever disease. The extraction method was carried out using maceration technique with ethanol solvent. Bioactivity test was conducted through larvicidal bioassay against Aedes aegypti larvae. The results showed that ethanol extract of langsat leaves has larvicidal effect against Aedes aegypti mosquito larvae. The toxicity levels, both LC50 and LC90, indicate that the ethanol extract of langsat leaves has potential as a mosquito larvae control agent. ]]>
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