Galeruca
Guides
Galeruca externa
Galeruca externa is a species of leaf beetle in the family Chrysomelidae, first described by Thomas Say in 1824. It is native to North America, with confirmed records from Ontario, Canada and the United States. As a member of the genus Galeruca, it belongs to a group of beetles commonly known as toadflax beetles or related leaf-feeding chrysomelids. Very little specific ecological or biological information has been published for this particular species.