【医】 蜂蝇

Drone fly \Drone" fly`\ (Zo["o]l.)
A dipterous insect ({Eristalis tenax}), resembling the drone
bee. See {Eristalis}.

Eristalis \E*ris"ta*lis\, n. [NL.] (Zo["o]l.)
A genus of dipterous insects whose young (called rat-tailed
larv[ae]) are remarkable for their long tapering tail, which
spiracles at the tip, and for their ability to live in very
impure and salt waters; -- also called {drone fly}.