May beetle vs Melolontha melolontha

May beetle and Melolontha melolontha both are nouns.

Word	Noun	Adjective	Verb	Adverb
May beetle	Yes	No	No	No
Melolontha melolontha	Yes	No	No	No

As nouns, May beetle and Melolontha melolontha are synonyms defined as:

May beetle and Melolontha melolontha: any of various large European beetles destructive to vegetation as both larvae and adult

Other synonyms of May beetle include cockchafer, May bug.

May beetle (noun)	Melolontha melolontha (noun)
any of various large European beetles destructive to vegetation as both larvae and adult	any of various large European beetles destructive to vegetation as both larvae and adult
any of various large usually brown North American leaf-eating beetles common in late spring; the larvae feed on roots of grasses etc.