This borer has nearly destroyed a small rhizome. Photo July 22, 2007.
Shown here is a group of five in various sizes. Photo July 23, 2007.
External signs of a borer inside the rhizome. Photo July 22, 2007.
Dug up late in the season in an iris bed while in the process of emerging. Wings never properly unfurled.
Iris borer pupa, found dozens in my garden.