lantern fly vs lantern-fly

lantern fly and lantern-fly both are nouns.

Word	Noun	Adjective	Verb	Adverb
lantern fly	Yes	No	No	No
lantern-fly	Yes	No	No	No

As nouns, lantern fly and lantern-fly are synonyms defined as:

lantern fly and lantern-fly: large brightly marked tropical insect with a process like a snout that was formerly thought to emit light

lantern fly (noun)	lantern-fly (noun)
large brightly marked tropical insect with a process like a snout that was formerly thought to emit light	large brightly marked tropical insect with a process like a snout that was formerly thought to emit light