hymenopterous insect vs hymenopteron

hymenopterous insect and hymenopteron both are nouns.

Word	Noun	Adjective	Verb	Adverb
hymenopterous insect	Yes	No	No	No
hymenopteron	Yes	No	No	No

As nouns, hymenopterous insect and hymenopteron are synonyms defined as:

hymenopterous insect and hymenopteron: insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing

Other synonyms of hymenopterous insect include hymenopter, hymenopteran.

hymenopterous insect (noun)	hymenopteron (noun)
insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing	insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing