lanternfly \lanternfly\, lantern fly \lantern fly\n. (Zool.)
any one of several species of large, handsome, brightly
marked, tropical hemipterous insects of the genera
{Laternaria}, {Fulgora}, and allies, of the family
{Fulgorid[ae]}. The largest species is {Laternaria
phosphorea} of Brazil. The head has a snoutlike process in
some species which was formerly thought to emit a
phosphorescent light.
[WordNet 1.5]