Nuttall’s Blister Beetle (Lytta nuttalli) — This strikingly beautiful beetle is best viewed and not touched. If squeezed, the adults will ooze chemicals that can blister your skin as a defense. They can be found throughout much of western North America. Hay that contains blister beetles can be toxic to livestock, particularly horses. Photo by Glenn Marangelo on 7/6/17 near Florence, MT.