For Urtica's Purple Loosestrife bug study -- a nonnative insect pest eating an nonnative, invasive plant! Hmm, maybe we should import Japanese Beetles to control the Purple Loosestrife (not!). This was the only 1 that I saw, in a patch a couple of meters sq.
Popillia is a genus of scarab beetles. The most familiar species is the Japanese beetle (P. japonica) which is responsible for crop losses around the world, and is near the top of the insect pest lists year after year.
