splitworm vs Phthorimaea operculella

splitworm and Phthorimaea operculella both are nouns.

Word	Noun	Adjective	Verb	Adverb
splitworm	Yes	No	No	No
Phthorimaea operculella	Yes	No	No	No

As nouns, splitworm and Phthorimaea operculella are synonyms defined as:

splitworm and Phthorimaea operculella: greyish-brown moth whose larva is the potato tuberworm

Other synonyms of splitworm include potato moth, potato tuber moth.

splitworm (noun)	Phthorimaea operculella (noun)
greyish-brown moth whose larva is the potato tuberworm	greyish-brown moth whose larva is the potato tuberworm
	larva of potato moth; mines in leaves and stems of e.g. potatoes and tobacco