Syrphus fly

Syr´phus fly`


1.(Zool.) Any one of numerous species of dipterous flies of the genus Syrphus and allied genera. They are usually bright-colored, with yellow bands, and hover around plants. The larvæ feed upon plant lice, and are, therefore, very beneficial to agriculture.
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Threatening organisms, such as fungi and syrphus fly, are controlled by biological means.