Definition of: syrphus fly

(sûr′fəs)
A fly of Syrphus or a related genus (family Syrphidae). The group is large and widely distributed, and contains many species which deceptively resemble bees and wasps. The larvae of many feed upon harmful plant lice. For illustration see INSECTS (beneficial). Also syr·phid (sûr′fid), syr′phi·an. [<NL <Gk. syrphos a gnat]