sandfly fever vs phlebotomus

sandfly fever and phlebotomus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandfly fever	Yes	No	No	No
phlebotomus	Yes	No	No	No

As nouns, sandfly fever and phlebotomus are synonyms defined as:

sandfly fever and phlebotomus: a mild viral disease transmitted by the bite of the sand fly Phlebotomus papatasii

Other synonyms of sandfly fever include pappataci fever.

sandfly fever (noun)	phlebotomus (noun)
a mild viral disease transmitted by the bite of the sand fly Phlebotomus papatasii	a mild viral disease transmitted by the bite of the sand fly Phlebotomus papatasii