The WSU website informs me that this hissing, stripy critter, which was deep in the potato tub until I unearthed it today, is a ten-lined June beetle.She's about 1 1/2 inches long. I know she's a she because she lacks the large feathery antenna ends that the males use to scent out female pheromones.
The larvae eat plant roots, but they are not numerous enough to be a problem, so I left her here in the lettuce after the photo op.
After and before:This shot of snap peas, (many) volunteer poppies, garlic, a calendula, and a bit of bindweed, was taken today. The one below is the same bed in April.