lygaeid vs hemipteran

lygaeid and hemipteran both are nouns.

Word	Noun	Adjective	Verb	Adverb
lygaeid	Yes	No	No	No
hemipteran	Yes	No	No	No

As nouns, hemipteran is a hypernym of lygaeid; that is, hemipteran is a word with a broader meaning than lygaeid:

lygaeid: a true bug: usually bright-colored; pest of cultivated crops and some fruit trees
hemipteran: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis

Other hypernyms of lygaeid include bug, hemipteron, hemipterous insect.

lygaeid (noun)	hemipteran (noun)
a true bug: usually bright-colored; pest of cultivated crops and some fruit trees	insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis