neuropterous insect vs neuropteron

neuropterous insect and neuropteron both are nouns.

Word	Noun	Adjective	Verb	Adverb
neuropterous insect	Yes	No	No	No
neuropteron	Yes	No	No	No

As nouns, neuropterous insect and neuropteron are synonyms defined as:

neuropterous insect and neuropteron: insect having biting mouthparts and four large membranous wings with netlike veins

Other synonyms of neuropterous insect include neuropteran.

neuropterous insect (noun)	neuropteron (noun)
insect having biting mouthparts and four large membranous wings with netlike veins	insect having biting mouthparts and four large membranous wings with netlike veins