Mexican bean beetle vs bean beetle

Mexican bean beetle and bean beetle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mexican bean beetle	Yes	No	No	No
bean beetle	Yes	No	No	No

As nouns, Mexican bean beetle and bean beetle are synonyms defined as:

Mexican bean beetle and bean beetle: introduced into the United States from Mexico; feeds on the foliage of the bean plant

Other synonyms of Mexican bean beetle include Epilachna varivestis.

Mexican bean beetle (noun)	bean beetle (noun)
introduced into the United States from Mexico; feeds on the foliage of the bean plant	introduced into the United States from Mexico; feeds on the foliage of the bean plant