Eristalis
Pronunciation : E*ris"ta*lis
Part of Speech : n.
Etymology : [NL.] (Zo?l.)
Definition : Defn: A genus of dipterous insects whose young (called rat-tailed larv?) 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.
Source : Webster's Unabridged Dictionary, 1913