There are 250 species of June bugs, so it isn't possible to list them all, here.
But they all belong to the genus Phyllophagus (fill-OFF-uh-gus), which is the word I think you wanted.
Coleoptera
June Bug June Bug
June Bug
June beetle, May beetle, May bug, green June beetle, figeater.
The scientific name for a sow bug is Oniscus asellus.
Phyllophaga
June bug?
The species name of the WOW Bug is "Beggiatoa alba."
Americanus
Americanus
June bug, Japanese beetele.
The scientific or taxonomic name would be Blissus sp.
The scientific or taxonomic name would be Anasa nistis.